i386: move xen

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

17 files changed, 0 insertions, 4198 deletions

diff --git a/arch/i386/xen/Kconfig b/arch/i386/xen/Kconfig
deleted file mode 100644
index 9df99e1885a..00000000000
--- a/arch/i386/xen/Kconfig
+++ /dev/null
@@ -1,11 +0,0 @@
-#
-# This Kconfig describes xen options
-#
-
-config XEN
-	bool "Enable support for Xen hypervisor"
-	depends on PARAVIRT && X86_CMPXCHG && X86_TSC && !NEED_MULTIPLE_NODES
-	help
-	  This is the Linux Xen port.  Enabling this will allow the
-	  kernel to boot in a paravirtualized environment under the
-	  Xen hypervisor.
diff --git a/arch/i386/xen/Makefile b/arch/i386/xen/Makefile
deleted file mode 100644
index 343df246bd3..00000000000
--- a/arch/i386/xen/Makefile
+++ /dev/null
@@ -1,4 +0,0 @@
-obj-y		:= enlighten.o setup.o features.o multicalls.o mmu.o \
-			events.o time.o manage.o xen-asm.o
-
-obj-$(CONFIG_SMP)	+= smp.o
diff --git a/arch/i386/xen/enlighten.c b/arch/i386/xen/enlighten.c
deleted file mode 100644
index f01bfcd4bde..00000000000
--- a/arch/i386/xen/enlighten.c
+++ /dev/null
@@ -1,1146 +0,0 @@
-/*
- * Core of Xen paravirt_ops implementation.
- *
- * This file contains the xen_paravirt_ops structure itself, and the
- * implementations for:
- * - privileged instructions
- * - interrupt flags
- * - segment operations
- * - booting and setup
- *
- * Jeremy Fitzhardinge <jeremy@xensource.com>, XenSource Inc, 2007
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/smp.h>
-#include <linux/preempt.h>
-#include <linux/hardirq.h>
-#include <linux/percpu.h>
-#include <linux/delay.h>
-#include <linux/start_kernel.h>
-#include <linux/sched.h>
-#include <linux/bootmem.h>
-#include <linux/module.h>
-#include <linux/mm.h>
-#include <linux/page-flags.h>
-#include <linux/highmem.h>
-#include <linux/smp.h>
-
-#include <xen/interface/xen.h>
-#include <xen/interface/physdev.h>
-#include <xen/interface/vcpu.h>
-#include <xen/interface/sched.h>
-#include <xen/features.h>
-#include <xen/page.h>
-
-#include <asm/paravirt.h>
-#include <asm/page.h>
-#include <asm/xen/hypercall.h>
-#include <asm/xen/hypervisor.h>
-#include <asm/fixmap.h>
-#include <asm/processor.h>
-#include <asm/setup.h>
-#include <asm/desc.h>
-#include <asm/pgtable.h>
-#include <asm/tlbflush.h>
-#include <asm/reboot.h>
-
-#include "xen-ops.h"
-#include "mmu.h"
-#include "multicalls.h"
-
-EXPORT_SYMBOL_GPL(hypercall_page);
-
-DEFINE_PER_CPU(enum paravirt_lazy_mode, xen_lazy_mode);
-
-DEFINE_PER_CPU(struct vcpu_info *, xen_vcpu);
-DEFINE_PER_CPU(struct vcpu_info, xen_vcpu_info);
-DEFINE_PER_CPU(unsigned long, xen_cr3);
-
-struct start_info *xen_start_info;
-EXPORT_SYMBOL_GPL(xen_start_info);
-
-static /* __initdata */ struct shared_info dummy_shared_info;
-
-/*
- * Point at some empty memory to start with. We map the real shared_info
- * page as soon as fixmap is up and running.
- */
-struct shared_info *HYPERVISOR_shared_info = (void *)&dummy_shared_info;
-
-/*
- * Flag to determine whether vcpu info placement is available on all
- * VCPUs.  We assume it is to start with, and then set it to zero on
- * the first failure.  This is because it can succeed on some VCPUs
- * and not others, since it can involve hypervisor memory allocation,
- * or because the guest failed to guarantee all the appropriate
- * constraints on all VCPUs (ie buffer can't cross a page boundary).
- *
- * Note that any particular CPU may be using a placed vcpu structure,
- * but we can only optimise if the all are.
- *
- * 0: not available, 1: available
- */
-static int have_vcpu_info_placement = 1;
-
-static void __init xen_vcpu_setup(int cpu)
-{
-	struct vcpu_register_vcpu_info info;
-	int err;
-	struct vcpu_info *vcpup;
-
-	per_cpu(xen_vcpu, cpu) = &HYPERVISOR_shared_info->vcpu_info[cpu];
-
-	if (!have_vcpu_info_placement)
-		return;		/* already tested, not available */
-
-	vcpup = &per_cpu(xen_vcpu_info, cpu);
-
-	info.mfn = virt_to_mfn(vcpup);
-	info.offset = offset_in_page(vcpup);
-
-	printk(KERN_DEBUG "trying to map vcpu_info %d at %p, mfn %x, offset %d\n",
-	       cpu, vcpup, info.mfn, info.offset);
-
-	/* Check to see if the hypervisor will put the vcpu_info
-	   structure where we want it, which allows direct access via
-	   a percpu-variable. */
-	err = HYPERVISOR_vcpu_op(VCPUOP_register_vcpu_info, cpu, &info);
-
-	if (err) {
-		printk(KERN_DEBUG "register_vcpu_info failed: err=%d\n", err);
-		have_vcpu_info_placement = 0;
-	} else {
-		/* This cpu is using the registered vcpu info, even if
-		   later ones fail to. */
-		per_cpu(xen_vcpu, cpu) = vcpup;
-
-		printk(KERN_DEBUG "cpu %d using vcpu_info at %p\n",
-		       cpu, vcpup);
-	}
-}
-
-static void __init xen_banner(void)
-{
-	printk(KERN_INFO "Booting paravirtualized kernel on %s\n",
-	       paravirt_ops.name);
-	printk(KERN_INFO "Hypervisor signature: %s\n", xen_start_info->magic);
-}
-
-static void xen_cpuid(unsigned int *eax, unsigned int *ebx,
-		      unsigned int *ecx, unsigned int *edx)
-{
-	unsigned maskedx = ~0;
-
-	/*
-	 * Mask out inconvenient features, to try and disable as many
-	 * unsupported kernel subsystems as possible.
-	 */
-	if (*eax == 1)
-		maskedx = ~((1 << X86_FEATURE_APIC) |  /* disable APIC */
-			    (1 << X86_FEATURE_ACPI) |  /* disable ACPI */
-			    (1 << X86_FEATURE_ACC));   /* thermal monitoring */
-
-	asm(XEN_EMULATE_PREFIX "cpuid"
-		: "=a" (*eax),
-		  "=b" (*ebx),
-		  "=c" (*ecx),
-		  "=d" (*edx)
-		: "0" (*eax), "2" (*ecx));
-	*edx &= maskedx;
-}
-
-static void xen_set_debugreg(int reg, unsigned long val)
-{
-	HYPERVISOR_set_debugreg(reg, val);
-}
-
-static unsigned long xen_get_debugreg(int reg)
-{
-	return HYPERVISOR_get_debugreg(reg);
-}
-
-static unsigned long xen_save_fl(void)
-{
-	struct vcpu_info *vcpu;
-	unsigned long flags;
-
-	vcpu = x86_read_percpu(xen_vcpu);
-
-	/* flag has opposite sense of mask */
-	flags = !vcpu->evtchn_upcall_mask;
-
-	/* convert to IF type flag
-	   -0 -> 0x00000000
-	   -1 -> 0xffffffff
-	*/
-	return (-flags) & X86_EFLAGS_IF;
-}
-
-static void xen_restore_fl(unsigned long flags)
-{
-	struct vcpu_info *vcpu;
-
-	/* convert from IF type flag */
-	flags = !(flags & X86_EFLAGS_IF);
-
-	/* There's a one instruction preempt window here.  We need to
-	   make sure we're don't switch CPUs between getting the vcpu
-	   pointer and updating the mask. */
-	preempt_disable();
-	vcpu = x86_read_percpu(xen_vcpu);
-	vcpu->evtchn_upcall_mask = flags;
-	preempt_enable_no_resched();
-
-	/* Doesn't matter if we get preempted here, because any
-	   pending event will get dealt with anyway. */
-
-	if (flags == 0) {
-		preempt_check_resched();
-		barrier(); /* unmask then check (avoid races) */
-		if (unlikely(vcpu->evtchn_upcall_pending))
-			force_evtchn_callback();
-	}
-}
-
-static void xen_irq_disable(void)
-{
-	/* There's a one instruction preempt window here.  We need to
-	   make sure we're don't switch CPUs between getting the vcpu
-	   pointer and updating the mask. */
-	preempt_disable();
-	x86_read_percpu(xen_vcpu)->evtchn_upcall_mask = 1;
-	preempt_enable_no_resched();
-}
-
-static void xen_irq_enable(void)
-{
-	struct vcpu_info *vcpu;
-
-	/* There's a one instruction preempt window here.  We need to
-	   make sure we're don't switch CPUs between getting the vcpu
-	   pointer and updating the mask. */
-	preempt_disable();
-	vcpu = x86_read_percpu(xen_vcpu);
-	vcpu->evtchn_upcall_mask = 0;
-	preempt_enable_no_resched();
-
-	/* Doesn't matter if we get preempted here, because any
-	   pending event will get dealt with anyway. */
-
-	barrier(); /* unmask then check (avoid races) */
-	if (unlikely(vcpu->evtchn_upcall_pending))
-		force_evtchn_callback();
-}
-
-static void xen_safe_halt(void)
-{
-	/* Blocking includes an implicit local_irq_enable(). */
-	if (HYPERVISOR_sched_op(SCHEDOP_block, 0) != 0)
-		BUG();
-}
-
-static void xen_halt(void)
-{
-	if (irqs_disabled())
-		HYPERVISOR_vcpu_op(VCPUOP_down, smp_processor_id(), NULL);
-	else
-		xen_safe_halt();
-}
-
-static void xen_set_lazy_mode(enum paravirt_lazy_mode mode)
-{
-	BUG_ON(preemptible());
-
-	switch (mode) {
-	case PARAVIRT_LAZY_NONE:
-		BUG_ON(x86_read_percpu(xen_lazy_mode) == PARAVIRT_LAZY_NONE);
-		break;
-
-	case PARAVIRT_LAZY_MMU:
-	case PARAVIRT_LAZY_CPU:
-		BUG_ON(x86_read_percpu(xen_lazy_mode) != PARAVIRT_LAZY_NONE);
-		break;
-
-	case PARAVIRT_LAZY_FLUSH:
-		/* flush if necessary, but don't change state */
-		if (x86_read_percpu(xen_lazy_mode) != PARAVIRT_LAZY_NONE)
-			xen_mc_flush();
-		return;
-	}
-
-	xen_mc_flush();
-	x86_write_percpu(xen_lazy_mode, mode);
-}
-
-static unsigned long xen_store_tr(void)
-{
-	return 0;
-}
-
-static void xen_set_ldt(const void *addr, unsigned entries)
-{
-	unsigned long linear_addr = (unsigned long)addr;
-	struct mmuext_op *op;
-	struct multicall_space mcs = xen_mc_entry(sizeof(*op));
-
-	op = mcs.args;
-	op->cmd = MMUEXT_SET_LDT;
-	if (linear_addr) {
-		/* ldt my be vmalloced, use arbitrary_virt_to_machine */
-		xmaddr_t maddr;
-		maddr = arbitrary_virt_to_machine((unsigned long)addr);
-		linear_addr = (unsigned long)maddr.maddr;
-	}
-	op->arg1.linear_addr = linear_addr;
-	op->arg2.nr_ents = entries;
-
-	MULTI_mmuext_op(mcs.mc, op, 1, NULL, DOMID_SELF);
-
-	xen_mc_issue(PARAVIRT_LAZY_CPU);
-}
-
-static void xen_load_gdt(const struct Xgt_desc_struct *dtr)
-{
-	unsigned long *frames;
-	unsigned long va = dtr->address;
-	unsigned int size = dtr->size + 1;
-	unsigned pages = (size + PAGE_SIZE - 1) / PAGE_SIZE;
-	int f;
-	struct multicall_space mcs;
-
-	/* A GDT can be up to 64k in size, which corresponds to 8192
-	   8-byte entries, or 16 4k pages.. */
-
-	BUG_ON(size > 65536);
-	BUG_ON(va & ~PAGE_MASK);
-
-	mcs = xen_mc_entry(sizeof(*frames) * pages);
-	frames = mcs.args;
-
-	for (f = 0; va < dtr->address + size; va += PAGE_SIZE, f++) {
-		frames[f] = virt_to_mfn(va);
-		make_lowmem_page_readonly((void *)va);
-	}
-
-	MULTI_set_gdt(mcs.mc, frames, size / sizeof(struct desc_struct));
-
-	xen_mc_issue(PARAVIRT_LAZY_CPU);
-}
-
-static void load_TLS_descriptor(struct thread_struct *t,
-				unsigned int cpu, unsigned int i)
-{
-	struct desc_struct *gdt = get_cpu_gdt_table(cpu);
-	xmaddr_t maddr = virt_to_machine(&gdt[GDT_ENTRY_TLS_MIN+i]);
-	struct multicall_space mc = __xen_mc_entry(0);
-
-	MULTI_update_descriptor(mc.mc, maddr.maddr, t->tls_array[i]);
-}
-
-static void xen_load_tls(struct thread_struct *t, unsigned int cpu)
-{
-	xen_mc_batch();
-
-	load_TLS_descriptor(t, cpu, 0);
-	load_TLS_descriptor(t, cpu, 1);
-	load_TLS_descriptor(t, cpu, 2);
-
-	xen_mc_issue(PARAVIRT_LAZY_CPU);
-
-	/*
-	 * XXX sleazy hack: If we're being called in a lazy-cpu zone,
-	 * it means we're in a context switch, and %gs has just been
-	 * saved.  This means we can zero it out to prevent faults on
-	 * exit from the hypervisor if the next process has no %gs.
-	 * Either way, it has been saved, and the new value will get
-	 * loaded properly.  This will go away as soon as Xen has been
-	 * modified to not save/restore %gs for normal hypercalls.
-	 */
-	if (xen_get_lazy_mode() == PARAVIRT_LAZY_CPU)
-		loadsegment(gs, 0);
-}
-
-static void xen_write_ldt_entry(struct desc_struct *dt, int entrynum,
-				u32 low, u32 high)
-{
-	unsigned long lp = (unsigned long)&dt[entrynum];
-	xmaddr_t mach_lp = virt_to_machine(lp);
-	u64 entry = (u64)high << 32 | low;
-
-	preempt_disable();
-
-	xen_mc_flush();
-	if (HYPERVISOR_update_descriptor(mach_lp.maddr, entry))
-		BUG();
-
-	preempt_enable();
-}
-
-static int cvt_gate_to_trap(int vector, u32 low, u32 high,
-			    struct trap_info *info)
-{
-	u8 type, dpl;
-
-	type = (high >> 8) & 0x1f;
-	dpl = (high >> 13) & 3;
-
-	if (type != 0xf && type != 0xe)
-		return 0;
-
-	info->vector = vector;
-	info->address = (high & 0xffff0000) | (low & 0x0000ffff);
-	info->cs = low >> 16;
-	info->flags = dpl;
-	/* interrupt gates clear IF */
-	if (type == 0xe)
-		info->flags |= 4;
-
-	return 1;
-}
-
-/* Locations of each CPU's IDT */
-static DEFINE_PER_CPU(struct Xgt_desc_struct, idt_desc);
-
-/* Set an IDT entry.  If the entry is part of the current IDT, then
-   also update Xen. */
-static void xen_write_idt_entry(struct desc_struct *dt, int entrynum,
-				u32 low, u32 high)
-{
-	unsigned long p = (unsigned long)&dt[entrynum];
-	unsigned long start, end;
-
-	preempt_disable();
-
-	start = __get_cpu_var(idt_desc).address;
-	end = start + __get_cpu_var(idt_desc).size + 1;
-
-	xen_mc_flush();
-
-	write_dt_entry(dt, entrynum, low, high);
-
-	if (p >= start && (p + 8) <= end) {
-		struct trap_info info[2];
-
-		info[1].address = 0;
-
-		if (cvt_gate_to_trap(entrynum, low, high, &info[0]))
-			if (HYPERVISOR_set_trap_table(info))
-				BUG();
-	}
-
-	preempt_enable();
-}
-
-static void xen_convert_trap_info(const struct Xgt_desc_struct *desc,
-				  struct trap_info *traps)
-{
-	unsigned in, out, count;
-
-	count = (desc->size+1) / 8;
-	BUG_ON(count > 256);
-
-	for (in = out = 0; in < count; in++) {
-		const u32 *entry = (u32 *)(desc->address + in * 8);
-
-		if (cvt_gate_to_trap(in, entry[0], entry[1], &traps[out]))
-			out++;
-	}
-	traps[out].address = 0;
-}
-
-void xen_copy_trap_info(struct trap_info *traps)
-{
-	const struct Xgt_desc_struct *desc = &__get_cpu_var(idt_desc);
-
-	xen_convert_trap_info(desc, traps);
-}
-
-/* Load a new IDT into Xen.  In principle this can be per-CPU, so we
-   hold a spinlock to protect the static traps[] array (static because
-   it avoids allocation, and saves stack space). */
-static void xen_load_idt(const struct Xgt_desc_struct *desc)
-{
-	static DEFINE_SPINLOCK(lock);
-	static struct trap_info traps[257];
-
-	spin_lock(&lock);
-
-	__get_cpu_var(idt_desc) = *desc;
-
-	xen_convert_trap_info(desc, traps);
-
-	xen_mc_flush();
-	if (HYPERVISOR_set_trap_table(traps))
-		BUG();
-
-	spin_unlock(&lock);
-}
-
-/* Write a GDT descriptor entry.  Ignore LDT descriptors, since
-   they're handled differently. */
-static void xen_write_gdt_entry(struct desc_struct *dt, int entry,
-				u32 low, u32 high)
-{
-	preempt_disable();
-
-	switch ((high >> 8) & 0xff) {
-	case DESCTYPE_LDT:
-	case DESCTYPE_TSS:
-		/* ignore */
-		break;
-
-	default: {
-		xmaddr_t maddr = virt_to_machine(&dt[entry]);
-		u64 desc = (u64)high << 32 | low;
-
-		xen_mc_flush();
-		if (HYPERVISOR_update_descriptor(maddr.maddr, desc))
-			BUG();
-	}
-
-	}
-
-	preempt_enable();
-}
-
-static void xen_load_esp0(struct tss_struct *tss,
-			  struct thread_struct *thread)
-{
-	struct multicall_space mcs = xen_mc_entry(0);
-	MULTI_stack_switch(mcs.mc, __KERNEL_DS, thread->esp0);
-	xen_mc_issue(PARAVIRT_LAZY_CPU);
-}
-
-static void xen_set_iopl_mask(unsigned mask)
-{
-	struct physdev_set_iopl set_iopl;
-
-	/* Force the change at ring 0. */
-	set_iopl.iopl = (mask == 0) ? 1 : (mask >> 12) & 3;
-	HYPERVISOR_physdev_op(PHYSDEVOP_set_iopl, &set_iopl);
-}
-
-static void xen_io_delay(void)
-{
-}
-
-#ifdef CONFIG_X86_LOCAL_APIC
-static unsigned long xen_apic_read(unsigned long reg)
-{
-	return 0;
-}
-
-static void xen_apic_write(unsigned long reg, unsigned long val)
-{
-	/* Warn to see if there's any stray references */
-	WARN_ON(1);
-}
-#endif
-
-static void xen_flush_tlb(void)
-{
-	struct mmuext_op *op;
-	struct multicall_space mcs = xen_mc_entry(sizeof(*op));
-
-	op = mcs.args;
-	op->cmd = MMUEXT_TLB_FLUSH_LOCAL;
-	MULTI_mmuext_op(mcs.mc, op, 1, NULL, DOMID_SELF);
-
-	xen_mc_issue(PARAVIRT_LAZY_MMU);
-}
-
-static void xen_flush_tlb_single(unsigned long addr)
-{
-	struct mmuext_op *op;
-	struct multicall_space mcs = xen_mc_entry(sizeof(*op));
-
-	op = mcs.args;
-	op->cmd = MMUEXT_INVLPG_LOCAL;
-	op->arg1.linear_addr = addr & PAGE_MASK;
-	MULTI_mmuext_op(mcs.mc, op, 1, NULL, DOMID_SELF);
-
-	xen_mc_issue(PARAVIRT_LAZY_MMU);
-}
-
-static void xen_flush_tlb_others(const cpumask_t *cpus, struct mm_struct *mm,
-				 unsigned long va)
-{
-	struct {
-		struct mmuext_op op;
-		cpumask_t mask;
-	} *args;
-	cpumask_t cpumask = *cpus;
-	struct multicall_space mcs;
-
-	/*
-	 * A couple of (to be removed) sanity checks:
-	 *
-	 * - current CPU must not be in mask
-	 * - mask must exist :)
-	 */
-	BUG_ON(cpus_empty(cpumask));
-	BUG_ON(cpu_isset(smp_processor_id(), cpumask));
-	BUG_ON(!mm);
-
-	/* If a CPU which we ran on has gone down, OK. */
-	cpus_and(cpumask, cpumask, cpu_online_map);
-	if (cpus_empty(cpumask))
-		return;
-
-	mcs = xen_mc_entry(sizeof(*args));
-	args = mcs.args;
-	args->mask = cpumask;
-	args->op.arg2.vcpumask = &args->mask;
-
-	if (va == TLB_FLUSH_ALL) {
-		args->op.cmd = MMUEXT_TLB_FLUSH_MULTI;
-	} else {
-		args->op.cmd = MMUEXT_INVLPG_MULTI;
-		args->op.arg1.linear_addr = va;
-	}
-
-	MULTI_mmuext_op(mcs.mc, &args->op, 1, NULL, DOMID_SELF);
-
-	xen_mc_issue(PARAVIRT_LAZY_MMU);
-}
-
-static void xen_write_cr2(unsigned long cr2)
-{
-	x86_read_percpu(xen_vcpu)->arch.cr2 = cr2;
-}
-
-static unsigned long xen_read_cr2(void)
-{
-	return x86_read_percpu(xen_vcpu)->arch.cr2;
-}
-
-static unsigned long xen_read_cr2_direct(void)
-{
-	return x86_read_percpu(xen_vcpu_info.arch.cr2);
-}
-
-static void xen_write_cr4(unsigned long cr4)
-{
-	/* Just ignore cr4 changes; Xen doesn't allow us to do
-	   anything anyway. */
-}
-
-static unsigned long xen_read_cr3(void)
-{
-	return x86_read_percpu(xen_cr3);
-}
-
-static void xen_write_cr3(unsigned long cr3)
-{
-	BUG_ON(preemptible());
-
-	if (cr3 == x86_read_percpu(xen_cr3)) {
-		/* just a simple tlb flush */
-		xen_flush_tlb();
-		return;
-	}
-
-	x86_write_percpu(xen_cr3, cr3);
-
-
-	{
-		struct mmuext_op *op;
-		struct multicall_space mcs = xen_mc_entry(sizeof(*op));
-		unsigned long mfn = pfn_to_mfn(PFN_DOWN(cr3));
-
-		op = mcs.args;
-		op->cmd = MMUEXT_NEW_BASEPTR;
-		op->arg1.mfn = mfn;
-
-		MULTI_mmuext_op(mcs.mc, op, 1, NULL, DOMID_SELF);
-
-		xen_mc_issue(PARAVIRT_LAZY_CPU);
-	}
-}
-
-/* Early in boot, while setting up the initial pagetable, assume
-   everything is pinned. */
-static __init void xen_alloc_pt_init(struct mm_struct *mm, u32 pfn)
-{
-	BUG_ON(mem_map);	/* should only be used early */
-	make_lowmem_page_readonly(__va(PFN_PHYS(pfn)));
-}
-
-/* This needs to make sure the new pte page is pinned iff its being
-   attached to a pinned pagetable. */
-static void xen_alloc_pt(struct mm_struct *mm, u32 pfn)
-{
-	struct page *page = pfn_to_page(pfn);
-
-	if (PagePinned(virt_to_page(mm->pgd))) {
-		SetPagePinned(page);
-
-		if (!PageHighMem(page))
-			make_lowmem_page_readonly(__va(PFN_PHYS(pfn)));
-		else
-			/* make sure there are no stray mappings of
-			   this page */
-			kmap_flush_unused();
-	}
-}
-
-/* This should never happen until we're OK to use struct page */
-static void xen_release_pt(u32 pfn)
-{
-	struct page *page = pfn_to_page(pfn);
-
-	if (PagePinned(page)) {
-		if (!PageHighMem(page))
-			make_lowmem_page_readwrite(__va(PFN_PHYS(pfn)));
-	}
-}
-
-#ifdef CONFIG_HIGHPTE
-static void *xen_kmap_atomic_pte(struct page *page, enum km_type type)
-{
-	pgprot_t prot = PAGE_KERNEL;
-
-	if (PagePinned(page))
-		prot = PAGE_KERNEL_RO;
-
-	if (0 && PageHighMem(page))
-		printk("mapping highpte %lx type %d prot %s\n",
-		       page_to_pfn(page), type,
-		       (unsigned long)pgprot_val(prot) & _PAGE_RW ? "WRITE" : "READ");
-
-	return kmap_atomic_prot(page, type, prot);
-}
-#endif
-
-static __init pte_t mask_rw_pte(pte_t *ptep, pte_t pte)
-{
-	/* If there's an existing pte, then don't allow _PAGE_RW to be set */
-	if (pte_val_ma(*ptep) & _PAGE_PRESENT)
-		pte = __pte_ma(((pte_val_ma(*ptep) & _PAGE_RW) | ~_PAGE_RW) &
-			       pte_val_ma(pte));
-
-	return pte;
-}
-
-/* Init-time set_pte while constructing initial pagetables, which
-   doesn't allow RO pagetable pages to be remapped RW */
-static __init void xen_set_pte_init(pte_t *ptep, pte_t pte)
-{
-	pte = mask_rw_pte(ptep, pte);
-
-	xen_set_pte(ptep, pte);
-}
-
-static __init void xen_pagetable_setup_start(pgd_t *base)
-{
-	pgd_t *xen_pgd = (pgd_t *)xen_start_info->pt_base;
-
-	/* special set_pte for pagetable initialization */
-	paravirt_ops.set_pte = xen_set_pte_init;
-
-	init_mm.pgd = base;
-	/*
-	 * copy top-level of Xen-supplied pagetable into place.	 For
-	 * !PAE we can use this as-is, but for PAE it is a stand-in
-	 * while we copy the pmd pages.
-	 */
-	memcpy(base, xen_pgd, PTRS_PER_PGD * sizeof(pgd_t));
-
-	if (PTRS_PER_PMD > 1) {
-		int i;
-		/*
-		 * For PAE, need to allocate new pmds, rather than
-		 * share Xen's, since Xen doesn't like pmd's being
-		 * shared between address spaces.
-		 */
-		for (i = 0; i < PTRS_PER_PGD; i++) {
-			if (pgd_val_ma(xen_pgd[i]) & _PAGE_PRESENT) {
-				pmd_t *pmd = (pmd_t *)alloc_bootmem_low_pages(PAGE_SIZE);
-
-				memcpy(pmd, (void *)pgd_page_vaddr(xen_pgd[i]),
-				       PAGE_SIZE);
-
-				make_lowmem_page_readonly(pmd);
-
-				set_pgd(&base[i], __pgd(1 + __pa(pmd)));
-			} else
-				pgd_clear(&base[i]);
-		}
-	}
-
-	/* make sure zero_page is mapped RO so we can use it in pagetables */
-	make_lowmem_page_readonly(empty_zero_page);
-	make_lowmem_page_readonly(base);
-	/*
-	 * Switch to new pagetable.  This is done before
-	 * pagetable_init has done anything so that the new pages
-	 * added to the table can be prepared properly for Xen.
-	 */
-	xen_write_cr3(__pa(base));
-}
-
-static __init void xen_pagetable_setup_done(pgd_t *base)
-{
-	/* This will work as long as patching hasn't happened yet
-	   (which it hasn't) */
-	paravirt_ops.alloc_pt = xen_alloc_pt;
-	paravirt_ops.set_pte = xen_set_pte;
-
-	if (!xen_feature(XENFEAT_auto_translated_physmap)) {
-		/*
-		 * Create a mapping for the shared info page.
-		 * Should be set_fixmap(), but shared_info is a machine
-		 * address with no corresponding pseudo-phys address.
-		 */
-		set_pte_mfn(fix_to_virt(FIX_PARAVIRT_BOOTMAP),
-			    PFN_DOWN(xen_start_info->shared_info),
-			    PAGE_KERNEL);
-
-		HYPERVISOR_shared_info =
-			(struct shared_info *)fix_to_virt(FIX_PARAVIRT_BOOTMAP);
-
-	} else
-		HYPERVISOR_shared_info =
-			(struct shared_info *)__va(xen_start_info->shared_info);
-
-	/* Actually pin the pagetable down, but we can't set PG_pinned
-	   yet because the page structures don't exist yet. */
-	{
-		struct mmuext_op op;
-#ifdef CONFIG_X86_PAE
-		op.cmd = MMUEXT_PIN_L3_TABLE;
-#else
-		op.cmd = MMUEXT_PIN_L3_TABLE;
-#endif
-		op.arg1.mfn = pfn_to_mfn(PFN_DOWN(__pa(base)));
-		if (HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF))
-			BUG();
-	}
-}
-
-/* This is called once we have the cpu_possible_map */
-void __init xen_setup_vcpu_info_placement(void)
-{
-	int cpu;
-
-	for_each_possible_cpu(cpu)
-		xen_vcpu_setup(cpu);
-
-	/* xen_vcpu_setup managed to place the vcpu_info within the
-	   percpu area for all cpus, so make use of it */
-	if (have_vcpu_info_placement) {
-		printk(KERN_INFO "Xen: using vcpu_info placement\n");
-
-		paravirt_ops.save_fl = xen_save_fl_direct;
-		paravirt_ops.restore_fl = xen_restore_fl_direct;
-		paravirt_ops.irq_disable = xen_irq_disable_direct;
-		paravirt_ops.irq_enable = xen_irq_enable_direct;
-		paravirt_ops.read_cr2 = xen_read_cr2_direct;
-		paravirt_ops.iret = xen_iret_direct;
-	}
-}
-
-static unsigned xen_patch(u8 type, u16 clobbers, void *insnbuf,
-			  unsigned long addr, unsigned len)
-{
-	char *start, *end, *reloc;
-	unsigned ret;
-
-	start = end = reloc = NULL;
-
-#define SITE(x)								\
-	case PARAVIRT_PATCH(x):						\
-	if (have_vcpu_info_placement) {					\
-		start = (char *)xen_##x##_direct;			\
-		end = xen_##x##_direct_end;				\
-		reloc = xen_##x##_direct_reloc;				\
-	}								\
-	goto patch_site
-
-	switch (type) {
-		SITE(irq_enable);
-		SITE(irq_disable);
-		SITE(save_fl);
-		SITE(restore_fl);
-#undef SITE
-
-	patch_site:
-		if (start == NULL || (end-start) > len)
-			goto default_patch;
-
-		ret = paravirt_patch_insns(insnbuf, len, start, end);
-
-		/* Note: because reloc is assigned from something that
-		   appears to be an array, gcc assumes it's non-null,
-		   but doesn't know its relationship with start and
-		   end. */
-		if (reloc > start && reloc < end) {
-			int reloc_off = reloc - start;
-			long *relocp = (long *)(insnbuf + reloc_off);
-			long delta = start - (char *)addr;
-
-			*relocp += delta;
-		}
-		break;
-
-	default_patch:
-	default:
-		ret = paravirt_patch_default(type, clobbers, insnbuf,
-					     addr, len);
-		break;
-	}
-
-	return ret;
-}
-
-static const struct paravirt_ops xen_paravirt_ops __initdata = {
-	.paravirt_enabled = 1,
-	.shared_kernel_pmd = 0,
-
-	.name = "Xen",
-	.banner = xen_banner,
-
-	.patch = xen_patch,
-
-	.memory_setup = xen_memory_setup,
-	.arch_setup = xen_arch_setup,
-	.init_IRQ = xen_init_IRQ,
-	.post_allocator_init = xen_mark_init_mm_pinned,
-
-	.time_init = xen_time_init,
-	.set_wallclock = xen_set_wallclock,
-	.get_wallclock = xen_get_wallclock,
-	.get_cpu_khz = xen_cpu_khz,
-	.sched_clock = xen_sched_clock,
-
-	.cpuid = xen_cpuid,
-
-	.set_debugreg = xen_set_debugreg,
-	.get_debugreg = xen_get_debugreg,
-
-	.clts = native_clts,
-
-	.read_cr0 = native_read_cr0,
-	.write_cr0 = native_write_cr0,
-
-	.read_cr2 = xen_read_cr2,
-	.write_cr2 = xen_write_cr2,
-
-	.read_cr3 = xen_read_cr3,
-	.write_cr3 = xen_write_cr3,
-
-	.read_cr4 = native_read_cr4,
-	.read_cr4_safe = native_read_cr4_safe,
-	.write_cr4 = xen_write_cr4,
-
-	.save_fl = xen_save_fl,
-	.restore_fl = xen_restore_fl,
-	.irq_disable = xen_irq_disable,
-	.irq_enable = xen_irq_enable,
-	.safe_halt = xen_safe_halt,
-	.halt = xen_halt,
-	.wbinvd = native_wbinvd,
-
-	.read_msr = native_read_msr_safe,
-	.write_msr = native_write_msr_safe,
-	.read_tsc = native_read_tsc,
-	.read_pmc = native_read_pmc,
-
-	.iret = (void *)&hypercall_page[__HYPERVISOR_iret],
-	.irq_enable_sysexit = NULL,  /* never called */
-
-	.load_tr_desc = paravirt_nop,
-	.set_ldt = xen_set_ldt,
-	.load_gdt = xen_load_gdt,
-	.load_idt = xen_load_idt,
-	.load_tls = xen_load_tls,
-
-	.store_gdt = native_store_gdt,
-	.store_idt = native_store_idt,
-	.store_tr = xen_store_tr,
-
-	.write_ldt_entry = xen_write_ldt_entry,
-	.write_gdt_entry = xen_write_gdt_entry,
-	.write_idt_entry = xen_write_idt_entry,
-	.load_esp0 = xen_load_esp0,
-
-	.set_iopl_mask = xen_set_iopl_mask,
-	.io_delay = xen_io_delay,
-
-#ifdef CONFIG_X86_LOCAL_APIC
-	.apic_write = xen_apic_write,
-	.apic_write_atomic = xen_apic_write,
-	.apic_read = xen_apic_read,
-	.setup_boot_clock = paravirt_nop,
-	.setup_secondary_clock = paravirt_nop,
-	.startup_ipi_hook = paravirt_nop,
-#endif
-
-	.flush_tlb_user = xen_flush_tlb,
-	.flush_tlb_kernel = xen_flush_tlb,
-	.flush_tlb_single = xen_flush_tlb_single,
-	.flush_tlb_others = xen_flush_tlb_others,
-
-	.pte_update = paravirt_nop,
-	.pte_update_defer = paravirt_nop,
-
-	.pagetable_setup_start = xen_pagetable_setup_start,
-	.pagetable_setup_done = xen_pagetable_setup_done,
-
-	.alloc_pt = xen_alloc_pt_init,
-	.release_pt = xen_release_pt,
-	.alloc_pd = paravirt_nop,
-	.alloc_pd_clone = paravirt_nop,
-	.release_pd = paravirt_nop,
-
-#ifdef CONFIG_HIGHPTE
-	.kmap_atomic_pte = xen_kmap_atomic_pte,
-#endif
-
-	.set_pte = NULL,	/* see xen_pagetable_setup_* */
-	.set_pte_at = xen_set_pte_at,
-	.set_pmd = xen_set_pmd,
-
-	.pte_val = xen_pte_val,
-	.pgd_val = xen_pgd_val,
-
-	.make_pte = xen_make_pte,
-	.make_pgd = xen_make_pgd,
-
-#ifdef CONFIG_X86_PAE
-	.set_pte_atomic = xen_set_pte_atomic,
-	.set_pte_present = xen_set_pte_at,
-	.set_pud = xen_set_pud,
-	.pte_clear = xen_pte_clear,
-	.pmd_clear = xen_pmd_clear,
-
-	.make_pmd = xen_make_pmd,
-	.pmd_val = xen_pmd_val,
-#endif	/* PAE */
-
-	.activate_mm = xen_activate_mm,
-	.dup_mmap = xen_dup_mmap,
-	.exit_mmap = xen_exit_mmap,
-
-	.set_lazy_mode = xen_set_lazy_mode,
-};
-
-#ifdef CONFIG_SMP
-static const struct smp_ops xen_smp_ops __initdata = {
-	.smp_prepare_boot_cpu = xen_smp_prepare_boot_cpu,
-	.smp_prepare_cpus = xen_smp_prepare_cpus,
-	.cpu_up = xen_cpu_up,
-	.smp_cpus_done = xen_smp_cpus_done,
-
-	.smp_send_stop = xen_smp_send_stop,
-	.smp_send_reschedule = xen_smp_send_reschedule,
-	.smp_call_function_mask = xen_smp_call_function_mask,
-};
-#endif	/* CONFIG_SMP */
-
-static void xen_reboot(int reason)
-{
-#ifdef CONFIG_SMP
-	smp_send_stop();
-#endif
-
-	if (HYPERVISOR_sched_op(SCHEDOP_shutdown, reason))
-		BUG();
-}
-
-static void xen_restart(char *msg)
-{
-	xen_reboot(SHUTDOWN_reboot);
-}
-
-static void xen_emergency_restart(void)
-{
-	xen_reboot(SHUTDOWN_reboot);
-}
-
-static void xen_machine_halt(void)
-{
-	xen_reboot(SHUTDOWN_poweroff);
-}
-
-static void xen_crash_shutdown(struct pt_regs *regs)
-{
-	xen_reboot(SHUTDOWN_crash);
-}
-
-static const struct machine_ops __initdata xen_machine_ops = {
-	.restart = xen_restart,
-	.halt = xen_machine_halt,
-	.power_off = xen_machine_halt,
-	.shutdown = xen_machine_halt,
-	.crash_shutdown = xen_crash_shutdown,
-	.emergency_restart = xen_emergency_restart,
-};
-
-
-/* First C function to be called on Xen boot */
-asmlinkage void __init xen_start_kernel(void)
-{
-	pgd_t *pgd;
-
-	if (!xen_start_info)
-		return;
-
-	BUG_ON(memcmp(xen_start_info->magic, "xen-3.0", 7) != 0);
-
-	/* Install Xen paravirt ops */
-	paravirt_ops = xen_paravirt_ops;
-	machine_ops = xen_machine_ops;
-
-#ifdef CONFIG_SMP
-	smp_ops = xen_smp_ops;
-#endif
-
-	xen_setup_features();
-
-	/* Get mfn list */
-	if (!xen_feature(XENFEAT_auto_translated_physmap))
-		phys_to_machine_mapping = (unsigned long *)xen_start_info->mfn_list;
-
-	pgd = (pgd_t *)xen_start_info->pt_base;
-
-	init_pg_tables_end = __pa(pgd) + xen_start_info->nr_pt_frames*PAGE_SIZE;
-
-	init_mm.pgd = pgd; /* use the Xen pagetables to start */
-
-	/* keep using Xen gdt for now; no urgent need to change it */
-
-	x86_write_percpu(xen_cr3, __pa(pgd));
-
-#ifdef CONFIG_SMP
-	/* Don't do the full vcpu_info placement stuff until we have a
-	   possible map. */
-	per_cpu(xen_vcpu, 0) = &HYPERVISOR_shared_info->vcpu_info[0];
-#else
-	/* May as well do it now, since there's no good time to call
-	   it later on UP. */
-	xen_setup_vcpu_info_placement();
-#endif
-
-	paravirt_ops.kernel_rpl = 1;
-	if (xen_feature(XENFEAT_supervisor_mode_kernel))
-		paravirt_ops.kernel_rpl = 0;
-
-	/* set the limit of our address space */
-	reserve_top_address(-HYPERVISOR_VIRT_START + 2 * PAGE_SIZE);
-
-	/* set up basic CPUID stuff */
-	cpu_detect(&new_cpu_data);
-	new_cpu_data.hard_math = 1;
-	new_cpu_data.x86_capability[0] = cpuid_edx(1);
-
-	/* Poke various useful things into boot_params */
-	LOADER_TYPE = (9 << 4) | 0;
-	INITRD_START = xen_start_info->mod_start ? __pa(xen_start_info->mod_start) : 0;
-	INITRD_SIZE = xen_start_info->mod_len;
-
-	/* Start the world */
-	start_kernel();
-}
diff --git a/arch/i386/xen/events.c b/arch/i386/xen/events.c
deleted file mode 100644
index da1b173547a..00000000000
--- a/arch/i386/xen/events.c
+++ /dev/null
@@ -1,591 +0,0 @@
-/*
- * Xen event channels
- *
- * Xen models interrupts with abstract event channels.  Because each
- * domain gets 1024 event channels, but NR_IRQ is not that large, we
- * must dynamically map irqs<->event channels.  The event channels
- * interface with the rest of the kernel by defining a xen interrupt
- * chip.  When an event is recieved, it is mapped to an irq and sent
- * through the normal interrupt processing path.
- *
- * There are four kinds of events which can be mapped to an event
- * channel:
- *
- * 1. Inter-domain notifications.  This includes all the virtual
- *    device events, since they're driven by front-ends in another domain
- *    (typically dom0).
- * 2. VIRQs, typically used for timers.  These are per-cpu events.
- * 3. IPIs.
- * 4. Hardware interrupts. Not supported at present.
- *
- * Jeremy Fitzhardinge <jeremy@xensource.com>, XenSource Inc, 2007
- */
-
-#include <linux/linkage.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/module.h>
-#include <linux/string.h>
-
-#include <asm/ptrace.h>
-#include <asm/irq.h>
-#include <asm/sync_bitops.h>
-#include <asm/xen/hypercall.h>
-#include <asm/xen/hypervisor.h>
-
-#include <xen/events.h>
-#include <xen/interface/xen.h>
-#include <xen/interface/event_channel.h>
-
-#include "xen-ops.h"
-
-/*
- * This lock protects updates to the following mapping and reference-count
- * arrays. The lock does not need to be acquired to read the mapping tables.
- */
-static DEFINE_SPINLOCK(irq_mapping_update_lock);
-
-/* IRQ <-> VIRQ mapping. */
-static DEFINE_PER_CPU(int, virq_to_irq[NR_VIRQS]) = {[0 ... NR_VIRQS-1] = -1};
-
-/* IRQ <-> IPI mapping */
-static DEFINE_PER_CPU(int, ipi_to_irq[XEN_NR_IPIS]) = {[0 ... XEN_NR_IPIS-1] = -1};
-
-/* Packed IRQ information: binding type, sub-type index, and event channel. */
-struct packed_irq
-{
-	unsigned short evtchn;
-	unsigned char index;
-	unsigned char type;
-};
-
-static struct packed_irq irq_info[NR_IRQS];
-
-/* Binding types. */
-enum {
-	IRQT_UNBOUND,
-	IRQT_PIRQ,
-	IRQT_VIRQ,
-	IRQT_IPI,
-	IRQT_EVTCHN
-};
-
-/* Convenient shorthand for packed representation of an unbound IRQ. */
-#define IRQ_UNBOUND	mk_irq_info(IRQT_UNBOUND, 0, 0)
-
-static int evtchn_to_irq[NR_EVENT_CHANNELS] = {
-	[0 ... NR_EVENT_CHANNELS-1] = -1
-};
-static unsigned long cpu_evtchn_mask[NR_CPUS][NR_EVENT_CHANNELS/BITS_PER_LONG];
-static u8 cpu_evtchn[NR_EVENT_CHANNELS];
-
-/* Reference counts for bindings to IRQs. */
-static int irq_bindcount[NR_IRQS];
-
-/* Xen will never allocate port zero for any purpose. */
-#define VALID_EVTCHN(chn)	((chn) != 0)
-
-/*
- * Force a proper event-channel callback from Xen after clearing the
- * callback mask. We do this in a very simple manner, by making a call
- * down into Xen. The pending flag will be checked by Xen on return.
- */
-void force_evtchn_callback(void)
-{
-	(void)HYPERVISOR_xen_version(0, NULL);
-}
-EXPORT_SYMBOL_GPL(force_evtchn_callback);
-
-static struct irq_chip xen_dynamic_chip;
-
-/* Constructor for packed IRQ information. */
-static inline struct packed_irq mk_irq_info(u32 type, u32 index, u32 evtchn)
-{
-	return (struct packed_irq) { evtchn, index, type };
-}
-
-/*
- * Accessors for packed IRQ information.
- */
-static inline unsigned int evtchn_from_irq(int irq)
-{
-	return irq_info[irq].evtchn;
-}
-
-static inline unsigned int index_from_irq(int irq)
-{
-	return irq_info[irq].index;
-}
-
-static inline unsigned int type_from_irq(int irq)
-{
-	return irq_info[irq].type;
-}
-
-static inline unsigned long active_evtchns(unsigned int cpu,
-					   struct shared_info *sh,
-					   unsigned int idx)
-{
-	return (sh->evtchn_pending[idx] &
-		cpu_evtchn_mask[cpu][idx] &
-		~sh->evtchn_mask[idx]);
-}
-
-static void bind_evtchn_to_cpu(unsigned int chn, unsigned int cpu)
-{
-	int irq = evtchn_to_irq[chn];
-
-	BUG_ON(irq == -1);
-#ifdef CONFIG_SMP
-	irq_desc[irq].affinity = cpumask_of_cpu(cpu);
-#endif
-
-	__clear_bit(chn, cpu_evtchn_mask[cpu_evtchn[chn]]);
-	__set_bit(chn, cpu_evtchn_mask[cpu]);
-
-	cpu_evtchn[chn] = cpu;
-}
-
-static void init_evtchn_cpu_bindings(void)
-{
-#ifdef CONFIG_SMP
-	int i;
-	/* By default all event channels notify CPU#0. */
-	for (i = 0; i < NR_IRQS; i++)
-		irq_desc[i].affinity = cpumask_of_cpu(0);
-#endif
-
-	memset(cpu_evtchn, 0, sizeof(cpu_evtchn));
-	memset(cpu_evtchn_mask[0], ~0, sizeof(cpu_evtchn_mask[0]));
-}
-
-static inline unsigned int cpu_from_evtchn(unsigned int evtchn)
-{
-	return cpu_evtchn[evtchn];
-}
-
-static inline void clear_evtchn(int port)
-{
-	struct shared_info *s = HYPERVISOR_shared_info;
-	sync_clear_bit(port, &s->evtchn_pending[0]);
-}
-
-static inline void set_evtchn(int port)
-{
-	struct shared_info *s = HYPERVISOR_shared_info;
-	sync_set_bit(port, &s->evtchn_pending[0]);
-}
-
-
-/**
- * notify_remote_via_irq - send event to remote end of event channel via irq
- * @irq: irq of event channel to send event to
- *
- * Unlike notify_remote_via_evtchn(), this is safe to use across
- * save/restore. Notifications on a broken connection are silently
- * dropped.
- */
-void notify_remote_via_irq(int irq)
-{
-	int evtchn = evtchn_from_irq(irq);
-
-	if (VALID_EVTCHN(evtchn))
-		notify_remote_via_evtchn(evtchn);
-}
-EXPORT_SYMBOL_GPL(notify_remote_via_irq);
-
-static void mask_evtchn(int port)
-{
-	struct shared_info *s = HYPERVISOR_shared_info;
-	sync_set_bit(port, &s->evtchn_mask[0]);
-}
-
-static void unmask_evtchn(int port)
-{
-	struct shared_info *s = HYPERVISOR_shared_info;
-	unsigned int cpu = get_cpu();
-
-	BUG_ON(!irqs_disabled());
-
-	/* Slow path (hypercall) if this is a non-local port. */
-	if (unlikely(cpu != cpu_from_evtchn(port))) {
-		struct evtchn_unmask unmask = { .port = port };
-		(void)HYPERVISOR_event_channel_op(EVTCHNOP_unmask, &unmask);
-	} else {
-		struct vcpu_info *vcpu_info = __get_cpu_var(xen_vcpu);
-
-		sync_clear_bit(port, &s->evtchn_mask[0]);
-
-		/*
-		 * The following is basically the equivalent of
-		 * 'hw_resend_irq'. Just like a real IO-APIC we 'lose
-		 * the interrupt edge' if the channel is masked.
-		 */
-		if (sync_test_bit(port, &s->evtchn_pending[0]) &&
-		    !sync_test_and_set_bit(port / BITS_PER_LONG,
-					   &vcpu_info->evtchn_pending_sel))
-			vcpu_info->evtchn_upcall_pending = 1;
-	}
-
-	put_cpu();
-}
-
-static int find_unbound_irq(void)
-{
-	int irq;
-
-	/* Only allocate from dynirq range */
-	for (irq = 0; irq < NR_IRQS; irq++)
-		if (irq_bindcount[irq] == 0)
-			break;
-
-	if (irq == NR_IRQS)
-		panic("No available IRQ to bind to: increase NR_IRQS!\n");
-
-	return irq;
-}
-
-int bind_evtchn_to_irq(unsigned int evtchn)
-{
-	int irq;
-
-	spin_lock(&irq_mapping_update_lock);
-
-	irq = evtchn_to_irq[evtchn];
-
-	if (irq == -1) {
-		irq = find_unbound_irq();
-
-		dynamic_irq_init(irq);
-		set_irq_chip_and_handler_name(irq, &xen_dynamic_chip,
-					      handle_level_irq, "event");
-
-		evtchn_to_irq[evtchn] = irq;
-		irq_info[irq] = mk_irq_info(IRQT_EVTCHN, 0, evtchn);
-	}
-
-	irq_bindcount[irq]++;
-
-	spin_unlock(&irq_mapping_update_lock);
-
-	return irq;
-}
-EXPORT_SYMBOL_GPL(bind_evtchn_to_irq);
-
-static int bind_ipi_to_irq(unsigned int ipi, unsigned int cpu)
-{
-	struct evtchn_bind_ipi bind_ipi;
-	int evtchn, irq;
-
-	spin_lock(&irq_mapping_update_lock);
-
-	irq = per_cpu(ipi_to_irq, cpu)[ipi];
-	if (irq == -1) {
-		irq = find_unbound_irq();
-		if (irq < 0)
-			goto out;
-
-		dynamic_irq_init(irq);
-		set_irq_chip_and_handler_name(irq, &xen_dynamic_chip,
-					      handle_level_irq, "ipi");
-
-		bind_ipi.vcpu = cpu;
-		if (HYPERVISOR_event_channel_op(EVTCHNOP_bind_ipi,
-						&bind_ipi) != 0)
-			BUG();
-		evtchn = bind_ipi.port;
-
-		evtchn_to_irq[evtchn] = irq;
-		irq_info[irq] = mk_irq_info(IRQT_IPI, ipi, evtchn);
-
-		per_cpu(ipi_to_irq, cpu)[ipi] = irq;
-
-		bind_evtchn_to_cpu(evtchn, cpu);
-	}
-
-	irq_bindcount[irq]++;
-
- out:
-	spin_unlock(&irq_mapping_update_lock);
-	return irq;
-}
-
-
-static int bind_virq_to_irq(unsigned int virq, unsigned int cpu)
-{
-	struct evtchn_bind_virq bind_virq;
-	int evtchn, irq;
-
-	spin_lock(&irq_mapping_update_lock);
-
-	irq = per_cpu(virq_to_irq, cpu)[virq];
-
-	if (irq == -1) {
-		bind_virq.virq = virq;
-		bind_virq.vcpu = cpu;
-		if (HYPERVISOR_event_channel_op(EVTCHNOP_bind_virq,
-						&bind_virq) != 0)
-			BUG();
-		evtchn = bind_virq.port;
-
-		irq = find_unbound_irq();
-
-		dynamic_irq_init(irq);
-		set_irq_chip_and_handler_name(irq, &xen_dynamic_chip,
-					      handle_level_irq, "virq");
-
-		evtchn_to_irq[evtchn] = irq;
-		irq_info[irq] = mk_irq_info(IRQT_VIRQ, virq, evtchn);
-
-		per_cpu(virq_to_irq, cpu)[virq] = irq;
-
-		bind_evtchn_to_cpu(evtchn, cpu);
-	}
-
-	irq_bindcount[irq]++;
-
-	spin_unlock(&irq_mapping_update_lock);
-
-	return irq;
-}
-
-static void unbind_from_irq(unsigned int irq)
-{
-	struct evtchn_close close;
-	int evtchn = evtchn_from_irq(irq);
-
-	spin_lock(&irq_mapping_update_lock);
-
-	if (VALID_EVTCHN(evtchn) && (--irq_bindcount[irq] == 0)) {
-		close.port = evtchn;
-		if (HYPERVISOR_event_channel_op(EVTCHNOP_close, &close) != 0)
-			BUG();
-
-		switch (type_from_irq(irq)) {
-		case IRQT_VIRQ:
-			per_cpu(virq_to_irq, cpu_from_evtchn(evtchn))
-				[index_from_irq(irq)] = -1;
-			break;
-		default:
-			break;
-		}
-
-		/* Closed ports are implicitly re-bound to VCPU0. */
-		bind_evtchn_to_cpu(evtchn, 0);
-
-		evtchn_to_irq[evtchn] = -1;
-		irq_info[irq] = IRQ_UNBOUND;
-
-		dynamic_irq_init(irq);
-	}
-
-	spin_unlock(&irq_mapping_update_lock);
-}
-
-int bind_evtchn_to_irqhandler(unsigned int evtchn,
-			      irqreturn_t (*handler)(int, void *),
-			      unsigned long irqflags,
-			      const char *devname, void *dev_id)
-{
-	unsigned int irq;
-	int retval;
-
-	irq = bind_evtchn_to_irq(evtchn);
-	retval = request_irq(irq, handler, irqflags, devname, dev_id);
-	if (retval != 0) {
-		unbind_from_irq(irq);
-		return retval;
-	}
-
-	return irq;
-}
-EXPORT_SYMBOL_GPL(bind_evtchn_to_irqhandler);
-
-int bind_virq_to_irqhandler(unsigned int virq, unsigned int cpu,
-			    irqreturn_t (*handler)(int, void *),
-			    unsigned long irqflags, const char *devname, void *dev_id)
-{
-	unsigned int irq;
-	int retval;
-
-	irq = bind_virq_to_irq(virq, cpu);
-	retval = request_irq(irq, handler, irqflags, devname, dev_id);
-	if (retval != 0) {
-		unbind_from_irq(irq);
-		return retval;
-	}
-
-	return irq;
-}
-EXPORT_SYMBOL_GPL(bind_virq_to_irqhandler);
-
-int bind_ipi_to_irqhandler(enum ipi_vector ipi,
-			   unsigned int cpu,
-			   irq_handler_t handler,
-			   unsigned long irqflags,
-			   const char *devname,
-			   void *dev_id)
-{
-	int irq, retval;
-
-	irq = bind_ipi_to_irq(ipi, cpu);
-	if (irq < 0)
-		return irq;
-
-	retval = request_irq(irq, handler, irqflags, devname, dev_id);
-	if (retval != 0) {
-		unbind_from_irq(irq);
-		return retval;
-	}
-
-	return irq;
-}
-
-void unbind_from_irqhandler(unsigned int irq, void *dev_id)
-{
-	free_irq(irq, dev_id);
-	unbind_from_irq(irq);
-}
-EXPORT_SYMBOL_GPL(unbind_from_irqhandler);
-
-void xen_send_IPI_one(unsigned int cpu, enum ipi_vector vector)
-{
-	int irq = per_cpu(ipi_to_irq, cpu)[vector];
-	BUG_ON(irq < 0);
-	notify_remote_via_irq(irq);
-}
-
-
-/*
- * Search the CPUs pending events bitmasks.  For each one found, map
- * the event number to an irq, and feed it into do_IRQ() for
- * handling.
- *
- * Xen uses a two-level bitmap to speed searching.  The first level is
- * a bitset of words which contain pending event bits.  The second
- * level is a bitset of pending events themselves.
- */
-fastcall void xen_evtchn_do_upcall(struct pt_regs *regs)
-{
-	int cpu = get_cpu();
-	struct shared_info *s = HYPERVISOR_shared_info;
-	struct vcpu_info *vcpu_info = __get_cpu_var(xen_vcpu);
-	unsigned long pending_words;
-
-	vcpu_info->evtchn_upcall_pending = 0;
-
-	/* NB. No need for a barrier here -- XCHG is a barrier on x86. */
-	pending_words = xchg(&vcpu_info->evtchn_pending_sel, 0);
-	while (pending_words != 0) {
-		unsigned long pending_bits;
-		int word_idx = __ffs(pending_words);
-		pending_words &= ~(1UL << word_idx);
-
-		while ((pending_bits = active_evtchns(cpu, s, word_idx)) != 0) {
-			int bit_idx = __ffs(pending_bits);
-			int port = (word_idx * BITS_PER_LONG) + bit_idx;
-			int irq = evtchn_to_irq[port];
-
-			if (irq != -1) {
-				regs->orig_eax = ~irq;
-				do_IRQ(regs);
-			}
-		}
-	}
-
-	put_cpu();
-}
-
-/* Rebind an evtchn so that it gets delivered to a specific cpu */
-static void rebind_irq_to_cpu(unsigned irq, unsigned tcpu)
-{
-	struct evtchn_bind_vcpu bind_vcpu;
-	int evtchn = evtchn_from_irq(irq);
-
-	if (!VALID_EVTCHN(evtchn))
-		return;
-
-	/* Send future instances of this interrupt to other vcpu. */
-	bind_vcpu.port = evtchn;
-	bind_vcpu.vcpu = tcpu;
-
-	/*
-	 * If this fails, it usually just indicates that we're dealing with a
-	 * virq or IPI channel, which don't actually need to be rebound. Ignore
-	 * it, but don't do the xenlinux-level rebind in that case.
-	 */
-	if (HYPERVISOR_event_channel_op(EVTCHNOP_bind_vcpu, &bind_vcpu) >= 0)
-		bind_evtchn_to_cpu(evtchn, tcpu);
-}
-
-
-static void set_affinity_irq(unsigned irq, cpumask_t dest)
-{
-	unsigned tcpu = first_cpu(dest);
-	rebind_irq_to_cpu(irq, tcpu);
-}
-
-static void enable_dynirq(unsigned int irq)
-{
-	int evtchn = evtchn_from_irq(irq);
-
-	if (VALID_EVTCHN(evtchn))
-		unmask_evtchn(evtchn);
-}
-
-static void disable_dynirq(unsigned int irq)
-{
-	int evtchn = evtchn_from_irq(irq);
-
-	if (VALID_EVTCHN(evtchn))
-		mask_evtchn(evtchn);
-}
-
-static void ack_dynirq(unsigned int irq)
-{
-	int evtchn = evtchn_from_irq(irq);
-
-	move_native_irq(irq);
-
-	if (VALID_EVTCHN(evtchn))
-		clear_evtchn(evtchn);
-}
-
-static int retrigger_dynirq(unsigned int irq)
-{
-	int evtchn = evtchn_from_irq(irq);
-	int ret = 0;
-
-	if (VALID_EVTCHN(evtchn)) {
-		set_evtchn(evtchn);
-		ret = 1;
-	}
-
-	return ret;
-}
-
-static struct irq_chip xen_dynamic_chip __read_mostly = {
-	.name		= "xen-dyn",
-	.mask		= disable_dynirq,
-	.unmask		= enable_dynirq,
-	.ack		= ack_dynirq,
-	.set_affinity	= set_affinity_irq,
-	.retrigger	= retrigger_dynirq,
-};
-
-void __init xen_init_IRQ(void)
-{
-	int i;
-
-	init_evtchn_cpu_bindings();
-
-	/* No event channels are 'live' right now. */
-	for (i = 0; i < NR_EVENT_CHANNELS; i++)
-		mask_evtchn(i);
-
-	/* Dynamic IRQ space is currently unbound. Zero the refcnts. */
-	for (i = 0; i < NR_IRQS; i++)
-		irq_bindcount[i] = 0;
-
-	irq_ctx_init(smp_processor_id());
-}
diff --git a/arch/i386/xen/features.c b/arch/i386/xen/features.c
deleted file mode 100644
index 0707714e40d..00000000000
--- a/arch/i386/xen/features.c
+++ /dev/null
@@ -1,29 +0,0 @@
-/******************************************************************************
- * features.c
- *
- * Xen feature flags.
- *
- * Copyright (c) 2006, Ian Campbell, XenSource Inc.
- */
-#include <linux/types.h>
-#include <linux/cache.h>
-#include <linux/module.h>
-#include <asm/xen/hypervisor.h>
-#include <xen/features.h>
-
-u8 xen_features[XENFEAT_NR_SUBMAPS * 32] __read_mostly;
-EXPORT_SYMBOL_GPL(xen_features);
-
-void xen_setup_features(void)
-{
-	struct xen_feature_info fi;
-	int i, j;
-
-	for (i = 0; i < XENFEAT_NR_SUBMAPS; i++) {
-		fi.submap_idx = i;
-		if (HYPERVISOR_xen_version(XENVER_get_features, &fi) < 0)
-			break;
-		for (j = 0; j < 32; j++)
-			xen_features[i * 32 + j] = !!(fi.submap & 1<<j);
-	}
-}
diff --git a/arch/i386/xen/manage.c b/arch/i386/xen/manage.c
deleted file mode 100644
index aa7af9e6abc..00000000000
--- a/arch/i386/xen/manage.c
+++ /dev/null
@@ -1,143 +0,0 @@
-/*
- * Handle extern requests for shutdown, reboot and sysrq
- */
-#include <linux/kernel.h>
-#include <linux/err.h>
-#include <linux/reboot.h>
-#include <linux/sysrq.h>
-
-#include <xen/xenbus.h>
-
-#define SHUTDOWN_INVALID  -1
-#define SHUTDOWN_POWEROFF  0
-#define SHUTDOWN_SUSPEND   2
-/* Code 3 is SHUTDOWN_CRASH, which we don't use because the domain can only
- * report a crash, not be instructed to crash!
- * HALT is the same as POWEROFF, as far as we're concerned.  The tools use
- * the distinction when we return the reason code to them.
- */
-#define SHUTDOWN_HALT      4
-
-/* Ignore multiple shutdown requests. */
-static int shutting_down = SHUTDOWN_INVALID;
-
-static void shutdown_handler(struct xenbus_watch *watch,
-			     const char **vec, unsigned int len)
-{
-	char *str;
-	struct xenbus_transaction xbt;
-	int err;
-
-	if (shutting_down != SHUTDOWN_INVALID)
-		return;
-
- again:
-	err = xenbus_transaction_start(&xbt);
-	if (err)
-		return;
-
-	str = (char *)xenbus_read(xbt, "control", "shutdown", NULL);
-	/* Ignore read errors and empty reads. */
-	if (XENBUS_IS_ERR_READ(str)) {
-		xenbus_transaction_end(xbt, 1);
-		return;
-	}
-
-	xenbus_write(xbt, "control", "shutdown", "");
-
-	err = xenbus_transaction_end(xbt, 0);
-	if (err == -EAGAIN) {
-		kfree(str);
-		goto again;
-	}
-
-	if (strcmp(str, "poweroff") == 0 ||
-	    strcmp(str, "halt") == 0)
-		orderly_poweroff(false);
-	else if (strcmp(str, "reboot") == 0)
-		ctrl_alt_del();
-	else {
-		printk(KERN_INFO "Ignoring shutdown request: %s\n", str);
-		shutting_down = SHUTDOWN_INVALID;
-	}
-
-	kfree(str);
-}
-
-static void sysrq_handler(struct xenbus_watch *watch, const char **vec,
-			  unsigned int len)
-{
-	char sysrq_key = '\0';
-	struct xenbus_transaction xbt;
-	int err;
-
- again:
-	err = xenbus_transaction_start(&xbt);
-	if (err)
-		return;
-	if (!xenbus_scanf(xbt, "control", "sysrq", "%c", &sysrq_key)) {
-		printk(KERN_ERR "Unable to read sysrq code in "
-		       "control/sysrq\n");
-		xenbus_transaction_end(xbt, 1);
-		return;
-	}
-
-	if (sysrq_key != '\0')
-		xenbus_printf(xbt, "control", "sysrq", "%c", '\0');
-
-	err = xenbus_transaction_end(xbt, 0);
-	if (err == -EAGAIN)
-		goto again;
-
-	if (sysrq_key != '\0')
-		handle_sysrq(sysrq_key, NULL);
-}
-
-static struct xenbus_watch shutdown_watch = {
-	.node = "control/shutdown",
-	.callback = shutdown_handler
-};
-
-static struct xenbus_watch sysrq_watch = {
-	.node = "control/sysrq",
-	.callback = sysrq_handler
-};
-
-static int setup_shutdown_watcher(void)
-{
-	int err;
-
-	err = register_xenbus_watch(&shutdown_watch);
-	if (err) {
-		printk(KERN_ERR "Failed to set shutdown watcher\n");
-		return err;
-	}
-
-	err = register_xenbus_watch(&sysrq_watch);
-	if (err) {
-		printk(KERN_ERR "Failed to set sysrq watcher\n");
-		return err;
-	}
-
-	return 0;
-}
-
-static int shutdown_event(struct notifier_block *notifier,
-			  unsigned long event,
-			  void *data)
-{
-	setup_shutdown_watcher();
-	return NOTIFY_DONE;
-}
-
-static int __init setup_shutdown_event(void)
-{
-	static struct notifier_block xenstore_notifier = {
-		.notifier_call = shutdown_event
-	};
-	register_xenstore_notifier(&xenstore_notifier);
-
-	return 0;
-}
-
-subsys_initcall(setup_shutdown_event);
diff --git a/arch/i386/xen/mmu.c b/arch/i386/xen/mmu.c
deleted file mode 100644
index 874db0cd1d2..00000000000
--- a/arch/i386/xen/mmu.c
+++ /dev/null
@@ -1,567 +0,0 @@
-/*
- * Xen mmu operations
- *
- * This file contains the various mmu fetch and update operations.
- * The most important job they must perform is the mapping between the
- * domain's pfn and the overall machine mfns.
- *
- * Xen allows guests to directly update the pagetable, in a controlled
- * fashion.  In other words, the guest modifies the same pagetable
- * that the CPU actually uses, which eliminates the overhead of having
- * a separate shadow pagetable.
- *
- * In order to allow this, it falls on the guest domain to map its
- * notion of a "physical" pfn - which is just a domain-local linear
- * address - into a real "machine address" which the CPU's MMU can
- * use.
- *
- * A pgd_t/pmd_t/pte_t will typically contain an mfn, and so can be
- * inserted directly into the pagetable.  When creating a new
- * pte/pmd/pgd, it converts the passed pfn into an mfn.  Conversely,
- * when reading the content back with __(pgd|pmd|pte)_val, it converts
- * the mfn back into a pfn.
- *
- * The other constraint is that all pages which make up a pagetable
- * must be mapped read-only in the guest.  This prevents uncontrolled
- * guest updates to the pagetable.  Xen strictly enforces this, and
- * will disallow any pagetable update which will end up mapping a
- * pagetable page RW, and will disallow using any writable page as a
- * pagetable.
- *
- * Naively, when loading %cr3 with the base of a new pagetable, Xen
- * would need to validate the whole pagetable before going on.
- * Naturally, this is quite slow.  The solution is to "pin" a
- * pagetable, which enforces all the constraints on the pagetable even
- * when it is not actively in use.  This menas that Xen can be assured
- * that it is still valid when you do load it into %cr3, and doesn't
- * need to revalidate it.
- *
- * Jeremy Fitzhardinge <jeremy@xensource.com>, XenSource Inc, 2007
- */
-#include <linux/sched.h>
-#include <linux/highmem.h>
-#include <linux/bug.h>
-#include <linux/sched.h>
-
-#include <asm/pgtable.h>
-#include <asm/tlbflush.h>
-#include <asm/mmu_context.h>
-#include <asm/paravirt.h>
-
-#include <asm/xen/hypercall.h>
-#include <asm/xen/hypervisor.h>
-
-#include <xen/page.h>
-#include <xen/interface/xen.h>
-
-#include "multicalls.h"
-#include "mmu.h"
-
-xmaddr_t arbitrary_virt_to_machine(unsigned long address)
-{
-	pte_t *pte = lookup_address(address);
-	unsigned offset = address & PAGE_MASK;
-
-	BUG_ON(pte == NULL);
-
-	return XMADDR((pte_mfn(*pte) << PAGE_SHIFT) + offset);
-}
-
-void make_lowmem_page_readonly(void *vaddr)
-{
-	pte_t *pte, ptev;
-	unsigned long address = (unsigned long)vaddr;
-
-	pte = lookup_address(address);
-	BUG_ON(pte == NULL);
-
-	ptev = pte_wrprotect(*pte);
-
-	if (HYPERVISOR_update_va_mapping(address, ptev, 0))
-		BUG();
-}
-
-void make_lowmem_page_readwrite(void *vaddr)
-{
-	pte_t *pte, ptev;
-	unsigned long address = (unsigned long)vaddr;
-
-	pte = lookup_address(address);
-	BUG_ON(pte == NULL);
-
-	ptev = pte_mkwrite(*pte);
-
-	if (HYPERVISOR_update_va_mapping(address, ptev, 0))
-		BUG();
-}
-
-
-void xen_set_pmd(pmd_t *ptr, pmd_t val)
-{
-	struct multicall_space mcs;
-	struct mmu_update *u;
-
-	preempt_disable();
-
-	mcs = xen_mc_entry(sizeof(*u));
-	u = mcs.args;
-	u->ptr = virt_to_machine(ptr).maddr;
-	u->val = pmd_val_ma(val);
-	MULTI_mmu_update(mcs.mc, u, 1, NULL, DOMID_SELF);
-
-	xen_mc_issue(PARAVIRT_LAZY_MMU);
-
-	preempt_enable();
-}
-
-/*
- * Associate a virtual page frame with a given physical page frame
- * and protection flags for that frame.
- */
-void set_pte_mfn(unsigned long vaddr, unsigned long mfn, pgprot_t flags)
-{
-	pgd_t *pgd;
-	pud_t *pud;
-	pmd_t *pmd;
-	pte_t *pte;
-
-	pgd = swapper_pg_dir + pgd_index(vaddr);
-	if (pgd_none(*pgd)) {
-		BUG();
-		return;
-	}
-	pud = pud_offset(pgd, vaddr);
-	if (pud_none(*pud)) {
-		BUG();
-		return;
-	}
-	pmd = pmd_offset(pud, vaddr);
-	if (pmd_none(*pmd)) {
-		BUG();
-		return;
-	}
-	pte = pte_offset_kernel(pmd, vaddr);
-	/* <mfn,flags> stored as-is, to permit clearing entries */
-	xen_set_pte(pte, mfn_pte(mfn, flags));
-
-	/*
-	 * It's enough to flush this one mapping.
-	 * (PGE mappings get flushed as well)
-	 */
-	__flush_tlb_one(vaddr);
-}
-
-void xen_set_pte_at(struct mm_struct *mm, unsigned long addr,
-		    pte_t *ptep, pte_t pteval)
-{
-	if (mm == current->mm || mm == &init_mm) {
-		if (xen_get_lazy_mode() == PARAVIRT_LAZY_MMU) {
-			struct multicall_space mcs;
-			mcs = xen_mc_entry(0);
-
-			MULTI_update_va_mapping(mcs.mc, addr, pteval, 0);
-			xen_mc_issue(PARAVIRT_LAZY_MMU);
-			return;
-		} else
-			if (HYPERVISOR_update_va_mapping(addr, pteval, 0) == 0)
-				return;
-	}
-	xen_set_pte(ptep, pteval);
-}
-
-#ifdef CONFIG_X86_PAE
-void xen_set_pud(pud_t *ptr, pud_t val)
-{
-	struct multicall_space mcs;
-	struct mmu_update *u;
-
-	preempt_disable();
-
-	mcs = xen_mc_entry(sizeof(*u));
-	u = mcs.args;
-	u->ptr = virt_to_machine(ptr).maddr;
-	u->val = pud_val_ma(val);
-	MULTI_mmu_update(mcs.mc, u, 1, NULL, DOMID_SELF);
-
-	xen_mc_issue(PARAVIRT_LAZY_MMU);
-
-	preempt_enable();
-}
-
-void xen_set_pte(pte_t *ptep, pte_t pte)
-{
-	ptep->pte_high = pte.pte_high;
-	smp_wmb();
-	ptep->pte_low = pte.pte_low;
-}
-
-void xen_set_pte_atomic(pte_t *ptep, pte_t pte)
-{
-	set_64bit((u64 *)ptep, pte_val_ma(pte));
-}
-
-void xen_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
-{
-	ptep->pte_low = 0;
-	smp_wmb();		/* make sure low gets written first */
-	ptep->pte_high = 0;
-}
-
-void xen_pmd_clear(pmd_t *pmdp)
-{
-	xen_set_pmd(pmdp, __pmd(0));
-}
-
-unsigned long long xen_pte_val(pte_t pte)
-{
-	unsigned long long ret = 0;
-
-	if (pte.pte_low) {
-		ret = ((unsigned long long)pte.pte_high << 32) | pte.pte_low;
-		ret = machine_to_phys(XMADDR(ret)).paddr | 1;
-	}
-
-	return ret;
-}
-
-unsigned long long xen_pmd_val(pmd_t pmd)
-{
-	unsigned long long ret = pmd.pmd;
-	if (ret)
-		ret = machine_to_phys(XMADDR(ret)).paddr | 1;
-	return ret;
-}
-
-unsigned long long xen_pgd_val(pgd_t pgd)
-{
-	unsigned long long ret = pgd.pgd;
-	if (ret)
-		ret = machine_to_phys(XMADDR(ret)).paddr | 1;
-	return ret;
-}
-
-pte_t xen_make_pte(unsigned long long pte)
-{
-	if (pte & 1)
-		pte = phys_to_machine(XPADDR(pte)).maddr;
-
-	return (pte_t){ pte, pte >> 32 };
-}
-
-pmd_t xen_make_pmd(unsigned long long pmd)
-{
-	if (pmd & 1)
-		pmd = phys_to_machine(XPADDR(pmd)).maddr;
-
-	return (pmd_t){ pmd };
-}
-
-pgd_t xen_make_pgd(unsigned long long pgd)
-{
-	if (pgd & _PAGE_PRESENT)
-		pgd = phys_to_machine(XPADDR(pgd)).maddr;
-
-	return (pgd_t){ pgd };
-}
-#else  /* !PAE */
-void xen_set_pte(pte_t *ptep, pte_t pte)
-{
-	*ptep = pte;
-}
-
-unsigned long xen_pte_val(pte_t pte)
-{
-	unsigned long ret = pte.pte_low;
-
-	if (ret & _PAGE_PRESENT)
-		ret = machine_to_phys(XMADDR(ret)).paddr;
-
-	return ret;
-}
-
-unsigned long xen_pgd_val(pgd_t pgd)
-{
-	unsigned long ret = pgd.pgd;
-	if (ret)
-		ret = machine_to_phys(XMADDR(ret)).paddr | 1;
-	return ret;
-}
-
-pte_t xen_make_pte(unsigned long pte)
-{
-	if (pte & _PAGE_PRESENT)
-		pte = phys_to_machine(XPADDR(pte)).maddr;
-
-	return (pte_t){ pte };
-}
-
-pgd_t xen_make_pgd(unsigned long pgd)
-{
-	if (pgd & _PAGE_PRESENT)
-		pgd = phys_to_machine(XPADDR(pgd)).maddr;
-
-	return (pgd_t){ pgd };
-}
-#endif	/* CONFIG_X86_PAE */
-
-
-
-/*
-  (Yet another) pagetable walker.  This one is intended for pinning a
-  pagetable.  This means that it walks a pagetable and calls the
-  callback function on each page it finds making up the page table,
-  at every level.  It walks the entire pagetable, but it only bothers
-  pinning pte pages which are below pte_limit.  In the normal case
-  this will be TASK_SIZE, but at boot we need to pin up to
-  FIXADDR_TOP.  But the important bit is that we don't pin beyond
-  there, because then we start getting into Xen's ptes.
-*/
-static int pgd_walk(pgd_t *pgd_base, int (*func)(struct page *, unsigned),
-		    unsigned long limit)
-{
-	pgd_t *pgd = pgd_base;
-	int flush = 0;
-	unsigned long addr = 0;
-	unsigned long pgd_next;
-
-	BUG_ON(limit > FIXADDR_TOP);
-
-	if (xen_feature(XENFEAT_auto_translated_physmap))
-		return 0;
-
-	for (; addr != FIXADDR_TOP; pgd++, addr = pgd_next) {
-		pud_t *pud;
-		unsigned long pud_limit, pud_next;
-
-		pgd_next = pud_limit = pgd_addr_end(addr, FIXADDR_TOP);
-
-		if (!pgd_val(*pgd))
-			continue;
-
-		pud = pud_offset(pgd, 0);
-
-		if (PTRS_PER_PUD > 1) /* not folded */
-			flush |= (*func)(virt_to_page(pud), 0);
-
-		for (; addr != pud_limit; pud++, addr = pud_next) {
-			pmd_t *pmd;
-			unsigned long pmd_limit;
-
-			pud_next = pud_addr_end(addr, pud_limit);
-
-			if (pud_next < limit)
-				pmd_limit = pud_next;
-			else
-				pmd_limit = limit;
-
-			if (pud_none(*pud))
-				continue;
-
-			pmd = pmd_offset(pud, 0);
-
-			if (PTRS_PER_PMD > 1) /* not folded */
-				flush |= (*func)(virt_to_page(pmd), 0);
-
-			for (; addr != pmd_limit; pmd++) {
-				addr += (PAGE_SIZE * PTRS_PER_PTE);
-				if ((pmd_limit-1) < (addr-1)) {
-					addr = pmd_limit;
-					break;
-				}
-
-				if (pmd_none(*pmd))
-					continue;
-
-				flush |= (*func)(pmd_page(*pmd), 0);
-			}
-		}
-	}
-
-	flush |= (*func)(virt_to_page(pgd_base), UVMF_TLB_FLUSH);
-
-	return flush;
-}
-
-static int pin_page(struct page *page, unsigned flags)
-{
-	unsigned pgfl = test_and_set_bit(PG_pinned, &page->flags);
-	int flush;
-
-	if (pgfl)
-		flush = 0;		/* already pinned */
-	else if (PageHighMem(page))
-		/* kmaps need flushing if we found an unpinned
-		   highpage */
-		flush = 1;
-	else {
-		void *pt = lowmem_page_address(page);
-		unsigned long pfn = page_to_pfn(page);
-		struct multicall_space mcs = __xen_mc_entry(0);
-
-		flush = 0;
-
-		MULTI_update_va_mapping(mcs.mc, (unsigned long)pt,
-					pfn_pte(pfn, PAGE_KERNEL_RO),
-					flags);
-	}
-
-	return flush;
-}
-
-/* This is called just after a mm has been created, but it has not
-   been used yet.  We need to make sure that its pagetable is all
-   read-only, and can be pinned. */
-void xen_pgd_pin(pgd_t *pgd)
-{
-	struct multicall_space mcs;
-	struct mmuext_op *op;
-
-	xen_mc_batch();
-
-	if (pgd_walk(pgd, pin_page, TASK_SIZE)) {
-		/* re-enable interrupts for kmap_flush_unused */
-		xen_mc_issue(0);
-		kmap_flush_unused();
-		xen_mc_batch();
-	}
-
-	mcs = __xen_mc_entry(sizeof(*op));
-	op = mcs.args;
-
-#ifdef CONFIG_X86_PAE
-	op->cmd = MMUEXT_PIN_L3_TABLE;
-#else
-	op->cmd = MMUEXT_PIN_L2_TABLE;
-#endif
-	op->arg1.mfn = pfn_to_mfn(PFN_DOWN(__pa(pgd)));
-	MULTI_mmuext_op(mcs.mc, op, 1, NULL, DOMID_SELF);
-
-	xen_mc_issue(0);
-}
-
-/* The init_mm pagetable is really pinned as soon as its created, but
-   that's before we have page structures to store the bits.  So do all
-   the book-keeping now. */
-static __init int mark_pinned(struct page *page, unsigned flags)
-{
-	SetPagePinned(page);
-	return 0;
-}
-
-void __init xen_mark_init_mm_pinned(void)
-{
-	pgd_walk(init_mm.pgd, mark_pinned, FIXADDR_TOP);
-}
-
-static int unpin_page(struct page *page, unsigned flags)
-{
-	unsigned pgfl = test_and_clear_bit(PG_pinned, &page->flags);
-
-	if (pgfl && !PageHighMem(page)) {
-		void *pt = lowmem_page_address(page);
-		unsigned long pfn = page_to_pfn(page);
-		struct multicall_space mcs = __xen_mc_entry(0);
-
-		MULTI_update_va_mapping(mcs.mc, (unsigned long)pt,
-					pfn_pte(pfn, PAGE_KERNEL),
-					flags);
-	}
-
-	return 0;		/* never need to flush on unpin */
-}
-
-/* Release a pagetables pages back as normal RW */
-static void xen_pgd_unpin(pgd_t *pgd)
-{
-	struct mmuext_op *op;
-	struct multicall_space mcs;
-
-	xen_mc_batch();
-
-	mcs = __xen_mc_entry(sizeof(*op));
-
-	op = mcs.args;
-	op->cmd = MMUEXT_UNPIN_TABLE;
-	op->arg1.mfn = pfn_to_mfn(PFN_DOWN(__pa(pgd)));
-
-	MULTI_mmuext_op(mcs.mc, op, 1, NULL, DOMID_SELF);
-
-	pgd_walk(pgd, unpin_page, TASK_SIZE);
-
-	xen_mc_issue(0);
-}
-
-void xen_activate_mm(struct mm_struct *prev, struct mm_struct *next)
-{
-	spin_lock(&next->page_table_lock);
-	xen_pgd_pin(next->pgd);
-	spin_unlock(&next->page_table_lock);
-}
-
-void xen_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm)
-{
-	spin_lock(&mm->page_table_lock);
-	xen_pgd_pin(mm->pgd);
-	spin_unlock(&mm->page_table_lock);
-}
-
-
-#ifdef CONFIG_SMP
-/* Another cpu may still have their %cr3 pointing at the pagetable, so
-   we need to repoint it somewhere else before we can unpin it. */
-static void drop_other_mm_ref(void *info)
-{
-	struct mm_struct *mm = info;
-
-	if (__get_cpu_var(cpu_tlbstate).active_mm == mm)
-		leave_mm(smp_processor_id());
-}
-
-static void drop_mm_ref(struct mm_struct *mm)
-{
-	if (current->active_mm == mm) {
-		if (current->mm == mm)
-			load_cr3(swapper_pg_dir);
-		else
-			leave_mm(smp_processor_id());
-	}
-
-	if (!cpus_empty(mm->cpu_vm_mask))
-		xen_smp_call_function_mask(mm->cpu_vm_mask, drop_other_mm_ref,
-					   mm, 1);
-}
-#else
-static void drop_mm_ref(struct mm_struct *mm)
-{
-	if (current->active_mm == mm)
-		load_cr3(swapper_pg_dir);
-}
-#endif
-
-/*
- * While a process runs, Xen pins its pagetables, which means that the
- * hypervisor forces it to be read-only, and it controls all updates
- * to it.  This means that all pagetable updates have to go via the
- * hypervisor, which is moderately expensive.
- *
- * Since we're pulling the pagetable down, we switch to use init_mm,
- * unpin old process pagetable and mark it all read-write, which
- * allows further operations on it to be simple memory accesses.
- *
- * The only subtle point is that another CPU may be still using the
- * pagetable because of lazy tlb flushing.  This means we need need to
- * switch all CPUs off this pagetable before we can unpin it.
- */
-void xen_exit_mmap(struct mm_struct *mm)
-{
-	get_cpu();		/* make sure we don't move around */
-	drop_mm_ref(mm);
-	put_cpu();
-
-	spin_lock(&mm->page_table_lock);
-
-	/* pgd may not be pinned in the error exit path of execve */
-	if (PagePinned(virt_to_page(mm->pgd)))
-		xen_pgd_unpin(mm->pgd);
-	spin_unlock(&mm->page_table_lock);
-}
diff --git a/arch/i386/xen/mmu.h b/arch/i386/xen/mmu.h
deleted file mode 100644
index c9ff27f3ac3..00000000000
--- a/arch/i386/xen/mmu.h
+++ /dev/null
@@ -1,60 +0,0 @@
-#ifndef _XEN_MMU_H
-
-#include <linux/linkage.h>
-#include <asm/page.h>
-
-/*
- * Page-directory addresses above 4GB do not fit into architectural %cr3.
- * When accessing %cr3, or equivalent field in vcpu_guest_context, guests
- * must use the following accessor macros to pack/unpack valid MFNs.
- *
- * Note that Xen is using the fact that the pagetable base is always
- * page-aligned, and putting the 12 MSB of the address into the 12 LSB
- * of cr3.
- */
-#define xen_pfn_to_cr3(pfn) (((unsigned)(pfn) << 12) | ((unsigned)(pfn) >> 20))
-#define xen_cr3_to_pfn(cr3) (((unsigned)(cr3) >> 12) | ((unsigned)(cr3) << 20))
-
-
-void set_pte_mfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags);
-
-void xen_set_pte(pte_t *ptep, pte_t pteval);
-void xen_set_pte_at(struct mm_struct *mm, unsigned long addr,
-		    pte_t *ptep, pte_t pteval);
-void xen_set_pmd(pmd_t *pmdp, pmd_t pmdval);
-
-void xen_activate_mm(struct mm_struct *prev, struct mm_struct *next);
-void xen_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm);
-void xen_exit_mmap(struct mm_struct *mm);
-
-void xen_pgd_pin(pgd_t *pgd);
-//void xen_pgd_unpin(pgd_t *pgd);
-
-#ifdef CONFIG_X86_PAE
-unsigned long long xen_pte_val(pte_t);
-unsigned long long xen_pmd_val(pmd_t);
-unsigned long long xen_pgd_val(pgd_t);
-
-pte_t xen_make_pte(unsigned long long);
-pmd_t xen_make_pmd(unsigned long long);
-pgd_t xen_make_pgd(unsigned long long);
-
-void xen_set_pte_at(struct mm_struct *mm, unsigned long addr,
-		    pte_t *ptep, pte_t pteval);
-void xen_set_pte_atomic(pte_t *ptep, pte_t pte);
-void xen_set_pud(pud_t *ptr, pud_t val);
-void xen_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
-void xen_pmd_clear(pmd_t *pmdp);
-
-
-#else
-unsigned long xen_pte_val(pte_t);
-unsigned long xen_pmd_val(pmd_t);
-unsigned long xen_pgd_val(pgd_t);
-
-pte_t xen_make_pte(unsigned long);
-pmd_t xen_make_pmd(unsigned long);
-pgd_t xen_make_pgd(unsigned long);
-#endif
-
-#endif	/* _XEN_MMU_H */
diff --git a/arch/i386/xen/multicalls.c b/arch/i386/xen/multicalls.c
deleted file mode 100644
index c837e8e463d..00000000000
--- a/arch/i386/xen/multicalls.c
+++ /dev/null
@@ -1,90 +0,0 @@
-/*
- * Xen hypercall batching.
- *
- * Xen allows multiple hypercalls to be issued at once, using the
- * multicall interface.  This allows the cost of trapping into the
- * hypervisor to be amortized over several calls.
- *
- * This file implements a simple interface for multicalls.  There's a
- * per-cpu buffer of outstanding multicalls.  When you want to queue a
- * multicall for issuing, you can allocate a multicall slot for the
- * call and its arguments, along with storage for space which is
- * pointed to by the arguments (for passing pointers to structures,
- * etc).  When the multicall is actually issued, all the space for the
- * commands and allocated memory is freed for reuse.
- *
- * Multicalls are flushed whenever any of the buffers get full, or
- * when explicitly requested.  There's no way to get per-multicall
- * return results back.  It will BUG if any of the multicalls fail.
- *
- * Jeremy Fitzhardinge <jeremy@xensource.com>, XenSource Inc, 2007
- */
-#include <linux/percpu.h>
-#include <linux/hardirq.h>
-
-#include <asm/xen/hypercall.h>
-
-#include "multicalls.h"
-
-#define MC_BATCH	32
-#define MC_ARGS		(MC_BATCH * 16 / sizeof(u64))
-
-struct mc_buffer {
-	struct multicall_entry entries[MC_BATCH];
-	u64 args[MC_ARGS];
-	unsigned mcidx, argidx;
-};
-
-static DEFINE_PER_CPU(struct mc_buffer, mc_buffer);
-DEFINE_PER_CPU(unsigned long, xen_mc_irq_flags);
-
-void xen_mc_flush(void)
-{
-	struct mc_buffer *b = &__get_cpu_var(mc_buffer);
-	int ret = 0;
-	unsigned long flags;
-
-	BUG_ON(preemptible());
-
-	/* Disable interrupts in case someone comes in and queues
-	   something in the middle */
-	local_irq_save(flags);
-
-	if (b->mcidx) {
-		int i;
-
-		if (HYPERVISOR_multicall(b->entries, b->mcidx) != 0)
-			BUG();
-		for (i = 0; i < b->mcidx; i++)
-			if (b->entries[i].result < 0)
-				ret++;
-		b->mcidx = 0;
-		b->argidx = 0;
-	} else
-		BUG_ON(b->argidx != 0);
-
-	local_irq_restore(flags);
-
-	BUG_ON(ret);
-}
-
-struct multicall_space __xen_mc_entry(size_t args)
-{
-	struct mc_buffer *b = &__get_cpu_var(mc_buffer);
-	struct multicall_space ret;
-	unsigned argspace = (args + sizeof(u64) - 1) / sizeof(u64);
-
-	BUG_ON(preemptible());
-	BUG_ON(argspace > MC_ARGS);
-
-	if (b->mcidx == MC_BATCH ||
-	    (b->argidx + argspace) > MC_ARGS)
-		xen_mc_flush();
-
-	ret.mc = &b->entries[b->mcidx];
-	b->mcidx++;
-	ret.args = &b->args[b->argidx];
-	b->argidx += argspace;
-
-	return ret;
-}
diff --git a/arch/i386/xen/multicalls.h b/arch/i386/xen/multicalls.h
deleted file mode 100644
index e6f7530b156..00000000000
--- a/arch/i386/xen/multicalls.h
+++ /dev/null
@@ -1,45 +0,0 @@
-#ifndef _XEN_MULTICALLS_H
-#define _XEN_MULTICALLS_H
-
-#include "xen-ops.h"
-
-/* Multicalls */
-struct multicall_space
-{
-	struct multicall_entry *mc;
-	void *args;
-};
-
-/* Allocate room for a multicall and its args */
-struct multicall_space __xen_mc_entry(size_t args);
-
-DECLARE_PER_CPU(unsigned long, xen_mc_irq_flags);
-
-/* Call to start a batch of multiple __xen_mc_entry()s.  Must be
-   paired with xen_mc_issue() */
-static inline void xen_mc_batch(void)
-{
-	/* need to disable interrupts until this entry is complete */
-	local_irq_save(__get_cpu_var(xen_mc_irq_flags));
-}
-
-static inline struct multicall_space xen_mc_entry(size_t args)
-{
-	xen_mc_batch();
-	return __xen_mc_entry(args);
-}
-
-/* Flush all pending multicalls */
-void xen_mc_flush(void);
-
-/* Issue a multicall if we're not in a lazy mode */
-static inline void xen_mc_issue(unsigned mode)
-{
-	if ((xen_get_lazy_mode() & mode) == 0)
-		xen_mc_flush();
-
-	/* restore flags saved in xen_mc_batch */
-	local_irq_restore(x86_read_percpu(xen_mc_irq_flags));
-}
-
-#endif /* _XEN_MULTICALLS_H */
diff --git a/arch/i386/xen/setup.c b/arch/i386/xen/setup.c
deleted file mode 100644
index f84e7722664..00000000000
--- a/arch/i386/xen/setup.c
+++ /dev/null
@@ -1,111 +0,0 @@
-/*
- * Machine specific setup for xen
- *
- * Jeremy Fitzhardinge <jeremy@xensource.com>, XenSource Inc, 2007
- */
-
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/pm.h>
-
-#include <asm/elf.h>
-#include <asm/e820.h>
-#include <asm/setup.h>
-#include <asm/xen/hypervisor.h>
-#include <asm/xen/hypercall.h>
-
-#include <xen/interface/physdev.h>
-#include <xen/features.h>
-
-#include "xen-ops.h"
-#include "vdso.h"
-
-/* These are code, but not functions.  Defined in entry.S */
-extern const char xen_hypervisor_callback[];
-extern const char xen_failsafe_callback[];
-
-unsigned long *phys_to_machine_mapping;
-EXPORT_SYMBOL(phys_to_machine_mapping);
-
-/**
- * machine_specific_memory_setup - Hook for machine specific memory setup.
- **/
-
-char * __init xen_memory_setup(void)
-{
-	unsigned long max_pfn = xen_start_info->nr_pages;
-
-	e820.nr_map = 0;
-	add_memory_region(0, PFN_PHYS(max_pfn), E820_RAM);
-
-	return "Xen";
-}
-
-static void xen_idle(void)
-{
-	local_irq_disable();
-
-	if (need_resched())
-		local_irq_enable();
-	else {
-		current_thread_info()->status &= ~TS_POLLING;
-		smp_mb__after_clear_bit();
-		safe_halt();
-		current_thread_info()->status |= TS_POLLING;
-	}
-}
-
-/*
- * Set the bit indicating "nosegneg" library variants should be used.
- */
-static void fiddle_vdso(void)
-{
-	extern u32 VDSO_NOTE_MASK; /* See ../kernel/vsyscall-note.S.  */
-	extern char vsyscall_int80_start;
-	u32 *mask = (u32 *) ((unsigned long) &VDSO_NOTE_MASK - VDSO_PRELINK +
-			     &vsyscall_int80_start);
-	*mask |= 1 << VDSO_NOTE_NONEGSEG_BIT;
-}
-
-void __init xen_arch_setup(void)
-{
-	struct physdev_set_iopl set_iopl;
-	int rc;
-
-	HYPERVISOR_vm_assist(VMASST_CMD_enable, VMASST_TYPE_4gb_segments);
-	HYPERVISOR_vm_assist(VMASST_CMD_enable, VMASST_TYPE_writable_pagetables);
-
-	if (!xen_feature(XENFEAT_auto_translated_physmap))
-		HYPERVISOR_vm_assist(VMASST_CMD_enable, VMASST_TYPE_pae_extended_cr3);
-
-	HYPERVISOR_set_callbacks(__KERNEL_CS, (unsigned long)xen_hypervisor_callback,
-				 __KERNEL_CS, (unsigned long)xen_failsafe_callback);
-
-	set_iopl.iopl = 1;
-	rc = HYPERVISOR_physdev_op(PHYSDEVOP_set_iopl, &set_iopl);
-	if (rc != 0)
-		printk(KERN_INFO "physdev_op failed %d\n", rc);
-
-#ifdef CONFIG_ACPI
-	if (!(xen_start_info->flags & SIF_INITDOMAIN)) {
-		printk(KERN_INFO "ACPI in unprivileged domain disabled\n");
-		disable_acpi();
-	}
-#endif
-
-	memcpy(boot_command_line, xen_start_info->cmd_line,
-	       MAX_GUEST_CMDLINE > COMMAND_LINE_SIZE ?
-	       COMMAND_LINE_SIZE : MAX_GUEST_CMDLINE);
-
-	pm_idle = xen_idle;
-
-#ifdef CONFIG_SMP
-	/* fill cpus_possible with all available cpus */
-	xen_fill_possible_map();
-#endif
-
-	paravirt_disable_iospace();
-
-	fiddle_vdso();
-}
diff --git a/arch/i386/xen/smp.c b/arch/i386/xen/smp.c
deleted file mode 100644
index 557b8e24706..00000000000
--- a/arch/i386/xen/smp.c
+++ /dev/null
@@ -1,404 +0,0 @@
-/*
- * Xen SMP support
- *
- * This file implements the Xen versions of smp_ops.  SMP under Xen is
- * very straightforward.  Bringing a CPU up is simply a matter of
- * loading its initial context and setting it running.
- *
- * IPIs are handled through the Xen event mechanism.
- *
- * Because virtual CPUs can be scheduled onto any real CPU, there's no
- * useful topology information for the kernel to make use of.  As a
- * result, all CPUs are treated as if they're single-core and
- * single-threaded.
- *
- * This does not handle HOTPLUG_CPU yet.
- */
-#include <linux/sched.h>
-#include <linux/err.h>
-#include <linux/smp.h>
-
-#include <asm/paravirt.h>
-#include <asm/desc.h>
-#include <asm/pgtable.h>
-#include <asm/cpu.h>
-
-#include <xen/interface/xen.h>
-#include <xen/interface/vcpu.h>
-
-#include <asm/xen/interface.h>
-#include <asm/xen/hypercall.h>
-
-#include <xen/page.h>
-#include <xen/events.h>
-
-#include "xen-ops.h"
-#include "mmu.h"
-
-static cpumask_t cpu_initialized_map;
-static DEFINE_PER_CPU(int, resched_irq);
-static DEFINE_PER_CPU(int, callfunc_irq);
-
-/*
- * Structure and data for smp_call_function(). This is designed to minimise
- * static memory requirements. It also looks cleaner.
- */
-static DEFINE_SPINLOCK(call_lock);
-
-struct call_data_struct {
-	void (*func) (void *info);
-	void *info;
-	atomic_t started;
-	atomic_t finished;
-	int wait;
-};
-
-static irqreturn_t xen_call_function_interrupt(int irq, void *dev_id);
-
-static struct call_data_struct *call_data;
-
-/*
- * Reschedule call back. Nothing to do,
- * all the work is done automatically when
- * we return from the interrupt.
- */
-static irqreturn_t xen_reschedule_interrupt(int irq, void *dev_id)
-{
-	return IRQ_HANDLED;
-}
-
-static __cpuinit void cpu_bringup_and_idle(void)
-{
-	int cpu = smp_processor_id();
-
-	cpu_init();
-
-	preempt_disable();
-	per_cpu(cpu_state, cpu) = CPU_ONLINE;
-
-	xen_setup_cpu_clockevents();
-
-	/* We can take interrupts now: we're officially "up". */
-	local_irq_enable();
-
-	wmb();			/* make sure everything is out */
-	cpu_idle();
-}
-
-static int xen_smp_intr_init(unsigned int cpu)
-{
-	int rc;
-	const char *resched_name, *callfunc_name;
-
-	per_cpu(resched_irq, cpu) = per_cpu(callfunc_irq, cpu) = -1;
-
-	resched_name = kasprintf(GFP_KERNEL, "resched%d", cpu);
-	rc = bind_ipi_to_irqhandler(XEN_RESCHEDULE_VECTOR,
-				    cpu,
-				    xen_reschedule_interrupt,
-				    IRQF_DISABLED|IRQF_PERCPU|IRQF_NOBALANCING,
-				    resched_name,
-				    NULL);
-	if (rc < 0)
-		goto fail;
-	per_cpu(resched_irq, cpu) = rc;
-
-	callfunc_name = kasprintf(GFP_KERNEL, "callfunc%d", cpu);
-	rc = bind_ipi_to_irqhandler(XEN_CALL_FUNCTION_VECTOR,
-				    cpu,
-				    xen_call_function_interrupt,
-				    IRQF_DISABLED|IRQF_PERCPU|IRQF_NOBALANCING,
-				    callfunc_name,
-				    NULL);
-	if (rc < 0)
-		goto fail;
-	per_cpu(callfunc_irq, cpu) = rc;
-
-	return 0;
-
- fail:
-	if (per_cpu(resched_irq, cpu) >= 0)
-		unbind_from_irqhandler(per_cpu(resched_irq, cpu), NULL);
-	if (per_cpu(callfunc_irq, cpu) >= 0)
-		unbind_from_irqhandler(per_cpu(callfunc_irq, cpu), NULL);
-	return rc;
-}
-
-void __init xen_fill_possible_map(void)
-{
-	int i, rc;
-
-	for (i = 0; i < NR_CPUS; i++) {
-		rc = HYPERVISOR_vcpu_op(VCPUOP_is_up, i, NULL);
-		if (rc >= 0)
-			cpu_set(i, cpu_possible_map);
-	}
-}
-
-void __init xen_smp_prepare_boot_cpu(void)
-{
-	int cpu;
-
-	BUG_ON(smp_processor_id() != 0);
-	native_smp_prepare_boot_cpu();
-
-	/* We've switched to the "real" per-cpu gdt, so make sure the
-	   old memory can be recycled */
-	make_lowmem_page_readwrite(&per_cpu__gdt_page);
-
-	for (cpu = 0; cpu < NR_CPUS; cpu++) {
-		cpus_clear(cpu_sibling_map[cpu]);
-		cpus_clear(cpu_core_map[cpu]);
-	}
-
-	xen_setup_vcpu_info_placement();
-}
-
-void __init xen_smp_prepare_cpus(unsigned int max_cpus)
-{
-	unsigned cpu;
-
-	for (cpu = 0; cpu < NR_CPUS; cpu++) {
-		cpus_clear(cpu_sibling_map[cpu]);
-		cpus_clear(cpu_core_map[cpu]);
-	}
-
-	smp_store_cpu_info(0);
-	set_cpu_sibling_map(0);
-
-	if (xen_smp_intr_init(0))
-		BUG();
-
-	cpu_initialized_map = cpumask_of_cpu(0);
-
-	/* Restrict the possible_map according to max_cpus. */
-	while ((num_possible_cpus() > 1) && (num_possible_cpus() > max_cpus)) {
-		for (cpu = NR_CPUS-1; !cpu_isset(cpu, cpu_possible_map); cpu--)
-			continue;
-		cpu_clear(cpu, cpu_possible_map);
-	}
-
-	for_each_possible_cpu (cpu) {
-		struct task_struct *idle;
-
-		if (cpu == 0)
-			continue;
-
-		idle = fork_idle(cpu);
-		if (IS_ERR(idle))
-			panic("failed fork for CPU %d", cpu);
-
-		cpu_set(cpu, cpu_present_map);
-	}
-
-	//init_xenbus_allowed_cpumask();
-}
-
-static __cpuinit int
-cpu_initialize_context(unsigned int cpu, struct task_struct *idle)
-{
-	struct vcpu_guest_context *ctxt;
-	struct gdt_page *gdt = &per_cpu(gdt_page, cpu);
-
-	if (cpu_test_and_set(cpu, cpu_initialized_map))
-		return 0;
-
-	ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
-	if (ctxt == NULL)
-		return -ENOMEM;
-
-	ctxt->flags = VGCF_IN_KERNEL;
-	ctxt->user_regs.ds = __USER_DS;
-	ctxt->user_regs.es = __USER_DS;
-	ctxt->user_regs.fs = __KERNEL_PERCPU;
-	ctxt->user_regs.gs = 0;
-	ctxt->user_regs.ss = __KERNEL_DS;
-	ctxt->user_regs.eip = (unsigned long)cpu_bringup_and_idle;
-	ctxt->user_regs.eflags = 0x1000; /* IOPL_RING1 */
-
-	memset(&ctxt->fpu_ctxt, 0, sizeof(ctxt->fpu_ctxt));
-
-	xen_copy_trap_info(ctxt->trap_ctxt);
-
-	ctxt->ldt_ents = 0;
-
-	BUG_ON((unsigned long)gdt->gdt & ~PAGE_MASK);
-	make_lowmem_page_readonly(gdt->gdt);
-
-	ctxt->gdt_frames[0] = virt_to_mfn(gdt->gdt);
-	ctxt->gdt_ents      = ARRAY_SIZE(gdt->gdt);
-
-	ctxt->user_regs.cs = __KERNEL_CS;
-	ctxt->user_regs.esp = idle->thread.esp0 - sizeof(struct pt_regs);
-
-	ctxt->kernel_ss = __KERNEL_DS;
-	ctxt->kernel_sp = idle->thread.esp0;
-
-	ctxt->event_callback_cs     = __KERNEL_CS;
-	ctxt->event_callback_eip    = (unsigned long)xen_hypervisor_callback;
-	ctxt->failsafe_callback_cs  = __KERNEL_CS;
-	ctxt->failsafe_callback_eip = (unsigned long)xen_failsafe_callback;
-
-	per_cpu(xen_cr3, cpu) = __pa(swapper_pg_dir);
-	ctxt->ctrlreg[3] = xen_pfn_to_cr3(virt_to_mfn(swapper_pg_dir));
-
-	if (HYPERVISOR_vcpu_op(VCPUOP_initialise, cpu, ctxt))
-		BUG();
-
-	kfree(ctxt);
-	return 0;
-}
-
-int __cpuinit xen_cpu_up(unsigned int cpu)
-{
-	struct task_struct *idle = idle_task(cpu);
-	int rc;
-
-#if 0
-	rc = cpu_up_check(cpu);
-	if (rc)
-		return rc;
-#endif
-
-	init_gdt(cpu);
-	per_cpu(current_task, cpu) = idle;
-	irq_ctx_init(cpu);
-	xen_setup_timer(cpu);
-
-	/* make sure interrupts start blocked */
-	per_cpu(xen_vcpu, cpu)->evtchn_upcall_mask = 1;
-
-	rc = cpu_initialize_context(cpu, idle);
-	if (rc)
-		return rc;
-
-	if (num_online_cpus() == 1)
-		alternatives_smp_switch(1);
-
-	rc = xen_smp_intr_init(cpu);
-	if (rc)
-		return rc;
-
-	smp_store_cpu_info(cpu);
-	set_cpu_sibling_map(cpu);
-	/* This must be done before setting cpu_online_map */
-	wmb();
-
-	cpu_set(cpu, cpu_online_map);
-
-	rc = HYPERVISOR_vcpu_op(VCPUOP_up, cpu, NULL);
-	BUG_ON(rc);
-
-	return 0;
-}
-
-void xen_smp_cpus_done(unsigned int max_cpus)
-{
-}
-
-static void stop_self(void *v)
-{
-	int cpu = smp_processor_id();
-
-	/* make sure we're not pinning something down */
-	load_cr3(swapper_pg_dir);
-	/* should set up a minimal gdt */
-
-	HYPERVISOR_vcpu_op(VCPUOP_down, cpu, NULL);
-	BUG();
-}
-
-void xen_smp_send_stop(void)
-{
-	smp_call_function(stop_self, NULL, 0, 0);
-}
-
-void xen_smp_send_reschedule(int cpu)
-{
-	xen_send_IPI_one(cpu, XEN_RESCHEDULE_VECTOR);
-}
-
-
-static void xen_send_IPI_mask(cpumask_t mask, enum ipi_vector vector)
-{
-	unsigned cpu;
-
-	cpus_and(mask, mask, cpu_online_map);
-
-	for_each_cpu_mask(cpu, mask)
-		xen_send_IPI_one(cpu, vector);
-}
-
-static irqreturn_t xen_call_function_interrupt(int irq, void *dev_id)
-{
-	void (*func) (void *info) = call_data->func;
-	void *info = call_data->info;
-	int wait = call_data->wait;
-
-	/*
-	 * Notify initiating CPU that I've grabbed the data and am
-	 * about to execute the function
-	 */
-	mb();
-	atomic_inc(&call_data->started);
-	/*
-	 * At this point the info structure may be out of scope unless wait==1
-	 */
-	irq_enter();
-	(*func)(info);
-	irq_exit();
-
-	if (wait) {
-		mb();		/* commit everything before setting finished */
-		atomic_inc(&call_data->finished);
-	}
-
-	return IRQ_HANDLED;
-}
-
-int xen_smp_call_function_mask(cpumask_t mask, void (*func)(void *),
-			       void *info, int wait)
-{
-	struct call_data_struct data;
-	int cpus;
-
-	/* Holding any lock stops cpus from going down. */
-	spin_lock(&call_lock);
-
-	cpu_clear(smp_processor_id(), mask);
-
-	cpus = cpus_weight(mask);
-	if (!cpus) {
-		spin_unlock(&call_lock);
-		return 0;
-	}
-
-	/* Can deadlock when called with interrupts disabled */
-	WARN_ON(irqs_disabled());
-
-	data.func = func;
-	data.info = info;
-	atomic_set(&data.started, 0);
-	data.wait = wait;
-	if (wait)
-		atomic_set(&data.finished, 0);
-
-	call_data = &data;
-	mb();			/* write everything before IPI */
-
-	/* Send a message to other CPUs and wait for them to respond */
-	xen_send_IPI_mask(mask, XEN_CALL_FUNCTION_VECTOR);
-
-	/* Make sure other vcpus get a chance to run.
-	   XXX too severe?  Maybe we should check the other CPU's states? */
-	HYPERVISOR_sched_op(SCHEDOP_yield, 0);
-
-	/* Wait for response */
-	while (atomic_read(&data.started) != cpus ||
-	       (wait && atomic_read(&data.finished) != cpus))
-		cpu_relax();
-
-	spin_unlock(&call_lock);
-
-	return 0;
-}
diff --git a/arch/i386/xen/time.c b/arch/i386/xen/time.c
deleted file mode 100644
index dfd6db69ead..00000000000
--- a/arch/i386/xen/time.c
+++ /dev/null
@@ -1,593 +0,0 @@
-/*
- * Xen time implementation.
- *
- * This is implemented in terms of a clocksource driver which uses
- * the hypervisor clock as a nanosecond timebase, and a clockevent
- * driver which uses the hypervisor's timer mechanism.
- *
- * Jeremy Fitzhardinge <jeremy@xensource.com>, XenSource Inc, 2007
- */
-#include <linux/kernel.h>
-#include <linux/interrupt.h>
-#include <linux/clocksource.h>
-#include <linux/clockchips.h>
-#include <linux/kernel_stat.h>
-
-#include <asm/xen/hypervisor.h>
-#include <asm/xen/hypercall.h>
-
-#include <xen/events.h>
-#include <xen/interface/xen.h>
-#include <xen/interface/vcpu.h>
-
-#include "xen-ops.h"
-
-#define XEN_SHIFT 22
-
-/* Xen may fire a timer up to this many ns early */
-#define TIMER_SLOP	100000
-#define NS_PER_TICK	(1000000000LL / HZ)
-
-static cycle_t xen_clocksource_read(void);
-
-/* These are perodically updated in shared_info, and then copied here. */
-struct shadow_time_info {
-	u64 tsc_timestamp;     /* TSC at last update of time vals.  */
-	u64 system_timestamp;  /* Time, in nanosecs, since boot.    */
-	u32 tsc_to_nsec_mul;
-	int tsc_shift;
-	u32 version;
-};
-
-static DEFINE_PER_CPU(struct shadow_time_info, shadow_time);
-
-/* runstate info updated by Xen */
-static DEFINE_PER_CPU(struct vcpu_runstate_info, runstate);
-
-/* snapshots of runstate info */
-static DEFINE_PER_CPU(struct vcpu_runstate_info, runstate_snapshot);
-
-/* unused ns of stolen and blocked time */
-static DEFINE_PER_CPU(u64, residual_stolen);
-static DEFINE_PER_CPU(u64, residual_blocked);
-
-/* return an consistent snapshot of 64-bit time/counter value */
-static u64 get64(const u64 *p)
-{
-	u64 ret;
-
-	if (BITS_PER_LONG < 64) {
-		u32 *p32 = (u32 *)p;
-		u32 h, l;
-
-		/*
-		 * Read high then low, and then make sure high is
-		 * still the same; this will only loop if low wraps
-		 * and carries into high.
-		 * XXX some clean way to make this endian-proof?
-		 */
-		do {
-			h = p32[1];
-			barrier();
-			l = p32[0];
-			barrier();
-		} while (p32[1] != h);
-
-		ret = (((u64)h) << 32) | l;
-	} else
-		ret = *p;
-
-	return ret;
-}
-
-/*
- * Runstate accounting
- */
-static void get_runstate_snapshot(struct vcpu_runstate_info *res)
-{
-	u64 state_time;
-	struct vcpu_runstate_info *state;
-
-	BUG_ON(preemptible());
-
-	state = &__get_cpu_var(runstate);
-
-	/*
-	 * The runstate info is always updated by the hypervisor on
-	 * the current CPU, so there's no need to use anything
-	 * stronger than a compiler barrier when fetching it.
-	 */
-	do {
-		state_time = get64(&state->state_entry_time);
-		barrier();
-		*res = *state;
-		barrier();
-	} while (get64(&state->state_entry_time) != state_time);
-}
-
-static void setup_runstate_info(int cpu)
-{
-	struct vcpu_register_runstate_memory_area area;
-
-	area.addr.v = &per_cpu(runstate, cpu);
-
-	if (HYPERVISOR_vcpu_op(VCPUOP_register_runstate_memory_area,
-			       cpu, &area))
-		BUG();
-}
-
-static void do_stolen_accounting(void)
-{
-	struct vcpu_runstate_info state;
-	struct vcpu_runstate_info *snap;
-	s64 blocked, runnable, offline, stolen;
-	cputime_t ticks;
-
-	get_runstate_snapshot(&state);
-
-	WARN_ON(state.state != RUNSTATE_running);
-
-	snap = &__get_cpu_var(runstate_snapshot);
-
-	/* work out how much time the VCPU has not been runn*ing*  */
-	blocked = state.time[RUNSTATE_blocked] - snap->time[RUNSTATE_blocked];
-	runnable = state.time[RUNSTATE_runnable] - snap->time[RUNSTATE_runnable];
-	offline = state.time[RUNSTATE_offline] - snap->time[RUNSTATE_offline];
-
-	*snap = state;
-
-	/* Add the appropriate number of ticks of stolen time,
-	   including any left-overs from last time.  Passing NULL to
-	   account_steal_time accounts the time as stolen. */
-	stolen = runnable + offline + __get_cpu_var(residual_stolen);
-
-	if (stolen < 0)
-		stolen = 0;
-
-	ticks = 0;
-	while (stolen >= NS_PER_TICK) {
-		ticks++;
-		stolen -= NS_PER_TICK;
-	}
-	__get_cpu_var(residual_stolen) = stolen;
-	account_steal_time(NULL, ticks);
-
-	/* Add the appropriate number of ticks of blocked time,
-	   including any left-overs from last time.  Passing idle to
-	   account_steal_time accounts the time as idle/wait. */
-	blocked += __get_cpu_var(residual_blocked);
-
-	if (blocked < 0)
-		blocked = 0;
-
-	ticks = 0;
-	while (blocked >= NS_PER_TICK) {
-		ticks++;
-		blocked -= NS_PER_TICK;
-	}
-	__get_cpu_var(residual_blocked) = blocked;
-	account_steal_time(idle_task(smp_processor_id()), ticks);
-}
-
-/*
- * Xen sched_clock implementation.  Returns the number of unstolen
- * nanoseconds, which is nanoseconds the VCPU spent in RUNNING+BLOCKED
- * states.
- */
-unsigned long long xen_sched_clock(void)
-{
-	struct vcpu_runstate_info state;
-	cycle_t now;
-	u64 ret;
-	s64 offset;
-
-	/*
-	 * Ideally sched_clock should be called on a per-cpu basis
-	 * anyway, so preempt should already be disabled, but that's
-	 * not current practice at the moment.
-	 */
-	preempt_disable();
-
-	now = xen_clocksource_read();
-
-	get_runstate_snapshot(&state);
-
-	WARN_ON(state.state != RUNSTATE_running);
-
-	offset = now - state.state_entry_time;
-	if (offset < 0)
-		offset = 0;
-
-	ret = state.time[RUNSTATE_blocked] +
-		state.time[RUNSTATE_running] +
-		offset;
-
-	preempt_enable();
-
-	return ret;
-}
-
-
-/* Get the CPU speed from Xen */
-unsigned long xen_cpu_khz(void)
-{
-	u64 cpu_khz = 1000000ULL << 32;
-	const struct vcpu_time_info *info =
-		&HYPERVISOR_shared_info->vcpu_info[0].time;
-
-	do_div(cpu_khz, info->tsc_to_system_mul);
-	if (info->tsc_shift < 0)
-		cpu_khz <<= -info->tsc_shift;
-	else
-		cpu_khz >>= info->tsc_shift;
-
-	return cpu_khz;
-}
-
-/*
- * Reads a consistent set of time-base values from Xen, into a shadow data
- * area.
- */
-static unsigned get_time_values_from_xen(void)
-{
-	struct vcpu_time_info   *src;
-	struct shadow_time_info *dst;
-
-	/* src is shared memory with the hypervisor, so we need to
-	   make sure we get a consistent snapshot, even in the face of
-	   being preempted. */
-	src = &__get_cpu_var(xen_vcpu)->time;
-	dst = &__get_cpu_var(shadow_time);
-
-	do {
-		dst->version = src->version;
-		rmb();		/* fetch version before data */
-		dst->tsc_timestamp     = src->tsc_timestamp;
-		dst->system_timestamp  = src->system_time;
-		dst->tsc_to_nsec_mul   = src->tsc_to_system_mul;
-		dst->tsc_shift         = src->tsc_shift;
-		rmb();		/* test version after fetching data */
-	} while ((src->version & 1) | (dst->version ^ src->version));
-
-	return dst->version;
-}
-
-/*
- * Scale a 64-bit delta by scaling and multiplying by a 32-bit fraction,
- * yielding a 64-bit result.
- */
-static inline u64 scale_delta(u64 delta, u32 mul_frac, int shift)
-{
-	u64 product;
-#ifdef __i386__
-	u32 tmp1, tmp2;
-#endif
-
-	if (shift < 0)
-		delta >>= -shift;
-	else
-		delta <<= shift;
-
-#ifdef __i386__
-	__asm__ (
-		"mul  %5       ; "
-		"mov  %4,%%eax ; "
-		"mov  %%edx,%4 ; "
-		"mul  %5       ; "
-		"xor  %5,%5    ; "
-		"add  %4,%%eax ; "
-		"adc  %5,%%edx ; "
-		: "=A" (product), "=r" (tmp1), "=r" (tmp2)
-		: "a" ((u32)delta), "1" ((u32)(delta >> 32)), "2" (mul_frac) );
-#elif __x86_64__
-	__asm__ (
-		"mul %%rdx ; shrd $32,%%rdx,%%rax"
-		: "=a" (product) : "0" (delta), "d" ((u64)mul_frac) );
-#else
-#error implement me!
-#endif
-
-	return product;
-}
-
-static u64 get_nsec_offset(struct shadow_time_info *shadow)
-{
-	u64 now, delta;
-	now = native_read_tsc();
-	delta = now - shadow->tsc_timestamp;
-	return scale_delta(delta, shadow->tsc_to_nsec_mul, shadow->tsc_shift);
-}
-
-static cycle_t xen_clocksource_read(void)
-{
-	struct shadow_time_info *shadow = &get_cpu_var(shadow_time);
-	cycle_t ret;
-	unsigned version;
-
-	do {
-		version = get_time_values_from_xen();
-		barrier();
-		ret = shadow->system_timestamp + get_nsec_offset(shadow);
-		barrier();
-	} while (version != __get_cpu_var(xen_vcpu)->time.version);
-
-	put_cpu_var(shadow_time);
-
-	return ret;
-}
-
-static void xen_read_wallclock(struct timespec *ts)
-{
-	const struct shared_info *s = HYPERVISOR_shared_info;
-	u32 version;
-	u64 delta;
-	struct timespec now;
-
-	/* get wallclock at system boot */
-	do {
-		version = s->wc_version;
-		rmb();		/* fetch version before time */
-		now.tv_sec  = s->wc_sec;
-		now.tv_nsec = s->wc_nsec;
-		rmb();		/* fetch time before checking version */
-	} while ((s->wc_version & 1) | (version ^ s->wc_version));
-
-	delta = xen_clocksource_read();	/* time since system boot */
-	delta += now.tv_sec * (u64)NSEC_PER_SEC + now.tv_nsec;
-
-	now.tv_nsec = do_div(delta, NSEC_PER_SEC);
-	now.tv_sec = delta;
-
-	set_normalized_timespec(ts, now.tv_sec, now.tv_nsec);
-}
-
-unsigned long xen_get_wallclock(void)
-{
-	struct timespec ts;
-
-	xen_read_wallclock(&ts);
-
-	return ts.tv_sec;
-}
-
-int xen_set_wallclock(unsigned long now)
-{
-	/* do nothing for domU */
-	return -1;
-}
-
-static struct clocksource xen_clocksource __read_mostly = {
-	.name = "xen",
-	.rating = 400,
-	.read = xen_clocksource_read,
-	.mask = ~0,
-	.mult = 1<<XEN_SHIFT,		/* time directly in nanoseconds */
-	.shift = XEN_SHIFT,
-	.flags = CLOCK_SOURCE_IS_CONTINUOUS,
-};
-
-/*
-   Xen clockevent implementation
-
-   Xen has two clockevent implementations:
-
-   The old timer_op one works with all released versions of Xen prior
-   to version 3.0.4.  This version of the hypervisor provides a
-   single-shot timer with nanosecond resolution.  However, sharing the
-   same event channel is a 100Hz tick which is delivered while the
-   vcpu is running.  We don't care about or use this tick, but it will
-   cause the core time code to think the timer fired too soon, and
-   will end up resetting it each time.  It could be filtered, but
-   doing so has complications when the ktime clocksource is not yet
-   the xen clocksource (ie, at boot time).
-
-   The new vcpu_op-based timer interface allows the tick timer period
-   to be changed or turned off.  The tick timer is not useful as a
-   periodic timer because events are only delivered to running vcpus.
-   The one-shot timer can report when a timeout is in the past, so
-   set_next_event is capable of returning -ETIME when appropriate.
-   This interface is used when available.
-*/
-
-
-/*
-  Get a hypervisor absolute time.  In theory we could maintain an
-  offset between the kernel's time and the hypervisor's time, and
-  apply that to a kernel's absolute timeout.  Unfortunately the
-  hypervisor and kernel times can drift even if the kernel is using
-  the Xen clocksource, because ntp can warp the kernel's clocksource.
-*/
-static s64 get_abs_timeout(unsigned long delta)
-{
-	return xen_clocksource_read() + delta;
-}
-
-static void xen_timerop_set_mode(enum clock_event_mode mode,
-				 struct clock_event_device *evt)
-{
-	switch (mode) {
-	case CLOCK_EVT_MODE_PERIODIC:
-		/* unsupported */
-		WARN_ON(1);
-		break;
-
-	case CLOCK_EVT_MODE_ONESHOT:
-	case CLOCK_EVT_MODE_RESUME:
-		break;
-
-	case CLOCK_EVT_MODE_UNUSED:
-	case CLOCK_EVT_MODE_SHUTDOWN:
-		HYPERVISOR_set_timer_op(0);  /* cancel timeout */
-		break;
-	}
-}
-
-static int xen_timerop_set_next_event(unsigned long delta,
-				      struct clock_event_device *evt)
-{
-	WARN_ON(evt->mode != CLOCK_EVT_MODE_ONESHOT);
-
-	if (HYPERVISOR_set_timer_op(get_abs_timeout(delta)) < 0)
-		BUG();
-
-	/* We may have missed the deadline, but there's no real way of
-	   knowing for sure.  If the event was in the past, then we'll
-	   get an immediate interrupt. */
-
-	return 0;
-}
-
-static const struct clock_event_device xen_timerop_clockevent = {
-	.name = "xen",
-	.features = CLOCK_EVT_FEAT_ONESHOT,
-
-	.max_delta_ns = 0xffffffff,
-	.min_delta_ns = TIMER_SLOP,
-
-	.mult = 1,
-	.shift = 0,
-	.rating = 500,
-
-	.set_mode = xen_timerop_set_mode,
-	.set_next_event = xen_timerop_set_next_event,
-};
-
-
-
-static void xen_vcpuop_set_mode(enum clock_event_mode mode,
-				struct clock_event_device *evt)
-{
-	int cpu = smp_processor_id();
-
-	switch (mode) {
-	case CLOCK_EVT_MODE_PERIODIC:
-		WARN_ON(1);	/* unsupported */
-		break;
-
-	case CLOCK_EVT_MODE_ONESHOT:
-		if (HYPERVISOR_vcpu_op(VCPUOP_stop_periodic_timer, cpu, NULL))
-			BUG();
-		break;
-
-	case CLOCK_EVT_MODE_UNUSED:
-	case CLOCK_EVT_MODE_SHUTDOWN:
-		if (HYPERVISOR_vcpu_op(VCPUOP_stop_singleshot_timer, cpu, NULL) ||
-		    HYPERVISOR_vcpu_op(VCPUOP_stop_periodic_timer, cpu, NULL))
-			BUG();
-		break;
-	case CLOCK_EVT_MODE_RESUME:
-		break;
-	}
-}
-
-static int xen_vcpuop_set_next_event(unsigned long delta,
-				     struct clock_event_device *evt)
-{
-	int cpu = smp_processor_id();
-	struct vcpu_set_singleshot_timer single;
-	int ret;
-
-	WARN_ON(evt->mode != CLOCK_EVT_MODE_ONESHOT);
-
-	single.timeout_abs_ns = get_abs_timeout(delta);
-	single.flags = VCPU_SSHOTTMR_future;
-
-	ret = HYPERVISOR_vcpu_op(VCPUOP_set_singleshot_timer, cpu, &single);
-
-	BUG_ON(ret != 0 && ret != -ETIME);
-
-	return ret;
-}
-
-static const struct clock_event_device xen_vcpuop_clockevent = {
-	.name = "xen",
-	.features = CLOCK_EVT_FEAT_ONESHOT,
-
-	.max_delta_ns = 0xffffffff,
-	.min_delta_ns = TIMER_SLOP,
-
-	.mult = 1,
-	.shift = 0,
-	.rating = 500,
-
-	.set_mode = xen_vcpuop_set_mode,
-	.set_next_event = xen_vcpuop_set_next_event,
-};
-
-static const struct clock_event_device *xen_clockevent =
-	&xen_timerop_clockevent;
-static DEFINE_PER_CPU(struct clock_event_device, xen_clock_events);
-
-static irqreturn_t xen_timer_interrupt(int irq, void *dev_id)
-{
-	struct clock_event_device *evt = &__get_cpu_var(xen_clock_events);
-	irqreturn_t ret;
-
-	ret = IRQ_NONE;
-	if (evt->event_handler) {
-		evt->event_handler(evt);
-		ret = IRQ_HANDLED;
-	}
-
-	do_stolen_accounting();
-
-	return ret;
-}
-
-void xen_setup_timer(int cpu)
-{
-	const char *name;
-	struct clock_event_device *evt;
-	int irq;
-
-	printk(KERN_INFO "installing Xen timer for CPU %d\n", cpu);
-
-	name = kasprintf(GFP_KERNEL, "timer%d", cpu);
-	if (!name)
-		name = "<timer kasprintf failed>";
-
-	irq = bind_virq_to_irqhandler(VIRQ_TIMER, cpu, xen_timer_interrupt,
-				      IRQF_DISABLED|IRQF_PERCPU|IRQF_NOBALANCING,
-				      name, NULL);
-
-	evt = &per_cpu(xen_clock_events, cpu);
-	memcpy(evt, xen_clockevent, sizeof(*evt));
-
-	evt->cpumask = cpumask_of_cpu(cpu);
-	evt->irq = irq;
-
-	setup_runstate_info(cpu);
-}
-
-void xen_setup_cpu_clockevents(void)
-{
-	BUG_ON(preemptible());
-
-	clockevents_register_device(&__get_cpu_var(xen_clock_events));
-}
-
-__init void xen_time_init(void)
-{
-	int cpu = smp_processor_id();
-
-	get_time_values_from_xen();
-
-	clocksource_register(&xen_clocksource);
-
-	if (HYPERVISOR_vcpu_op(VCPUOP_stop_periodic_timer, cpu, NULL) == 0) {
-		/* Successfully turned off 100Hz tick, so we have the
-		   vcpuop-based timer interface */
-		printk(KERN_DEBUG "Xen: using vcpuop timer interface\n");
-		xen_clockevent = &xen_vcpuop_clockevent;
-	}
-
-	/* Set initial system time with full resolution */
-	xen_read_wallclock(&xtime);
-	set_normalized_timespec(&wall_to_monotonic,
-				-xtime.tv_sec, -xtime.tv_nsec);
-
-	tsc_disable = 0;
-
-	xen_setup_timer(cpu);
-	xen_setup_cpu_clockevents();
-}
diff --git a/arch/i386/xen/vdso.h b/arch/i386/xen/vdso.h
deleted file mode 100644
index 861fedfe523..00000000000
--- a/arch/i386/xen/vdso.h
+++ /dev/null
@@ -1,4 +0,0 @@
-/* Bit used for the pseudo-hwcap for non-negative segments.  We use
-   bit 1 to avoid bugs in some versions of glibc when bit 0 is
-   used; the choice is otherwise arbitrary. */
-#define VDSO_NOTE_NONEGSEG_BIT	1
diff --git a/arch/i386/xen/xen-asm.S b/arch/i386/xen/xen-asm.S
deleted file mode 100644
index 1a43b60c0c6..00000000000
--- a/arch/i386/xen/xen-asm.S
+++ /dev/null
@@ -1,291 +0,0 @@
-/*
-	Asm versions of Xen pv-ops, suitable for either direct use or inlining.
-	The inline versions are the same as the direct-use versions, with the
-	pre- and post-amble chopped off.
-
-	This code is encoded for size rather than absolute efficiency,
-	with a view to being able to inline as much as possible.
-
-	We only bother with direct forms (ie, vcpu in pda) of the operations
-	here; the indirect forms are better handled in C, since they're
-	generally too large to inline anyway.
- */
-
-#include <linux/linkage.h>
-
-#include <asm/asm-offsets.h>
-#include <asm/thread_info.h>
-#include <asm/percpu.h>
-#include <asm/processor-flags.h>
-#include <asm/segment.h>
-
-#include <xen/interface/xen.h>
-
-#define RELOC(x, v)	.globl x##_reloc; x##_reloc=v
-#define ENDPATCH(x)	.globl x##_end; x##_end=.
-
-/* Pseudo-flag used for virtual NMI, which we don't implement yet */
-#define XEN_EFLAGS_NMI	0x80000000
-
-/*
-	Enable events.  This clears the event mask and tests the pending
-	event status with one and operation.  If there are pending
-	events, then enter the hypervisor to get them handled.
- */
-ENTRY(xen_irq_enable_direct)
-	/* Clear mask and test pending */
-	andw $0x00ff, PER_CPU_VAR(xen_vcpu_info)+XEN_vcpu_info_pending
-	/* Preempt here doesn't matter because that will deal with
-	   any pending interrupts.  The pending check may end up being
-	   run on the wrong CPU, but that doesn't hurt. */
-	jz 1f
-2:	call check_events
-1:
-ENDPATCH(xen_irq_enable_direct)
-	ret
-	ENDPROC(xen_irq_enable_direct)
-	RELOC(xen_irq_enable_direct, 2b+1)
-
-
-/*
-	Disabling events is simply a matter of making the event mask
-	non-zero.
- */
-ENTRY(xen_irq_disable_direct)
-	movb $1, PER_CPU_VAR(xen_vcpu_info)+XEN_vcpu_info_mask
-ENDPATCH(xen_irq_disable_direct)
-	ret
-	ENDPROC(xen_irq_disable_direct)
-	RELOC(xen_irq_disable_direct, 0)
-
-/*
-	(xen_)save_fl is used to get the current interrupt enable status.
-	Callers expect the status to be in X86_EFLAGS_IF, and other bits
-	may be set in the return value.  We take advantage of this by
-	making sure that X86_EFLAGS_IF has the right value (and other bits
-	in that byte are 0), but other bits in the return value are
-	undefined.  We need to toggle the state of the bit, because
-	Xen and x86 use opposite senses (mask vs enable).
- */
-ENTRY(xen_save_fl_direct)
-	testb $0xff, PER_CPU_VAR(xen_vcpu_info)+XEN_vcpu_info_mask
-	setz %ah
-	addb %ah,%ah
-ENDPATCH(xen_save_fl_direct)
-	ret
-	ENDPROC(xen_save_fl_direct)
-	RELOC(xen_save_fl_direct, 0)
-
-
-/*
-	In principle the caller should be passing us a value return
-	from xen_save_fl_direct, but for robustness sake we test only
-	the X86_EFLAGS_IF flag rather than the whole byte. After
-	setting the interrupt mask state, it checks for unmasked
-	pending events and enters the hypervisor to get them delivered
-	if so.
- */
-ENTRY(xen_restore_fl_direct)
-	testb $X86_EFLAGS_IF>>8, %ah
-	setz PER_CPU_VAR(xen_vcpu_info)+XEN_vcpu_info_mask
-	/* Preempt here doesn't matter because that will deal with
-	   any pending interrupts.  The pending check may end up being
-	   run on the wrong CPU, but that doesn't hurt. */
-
-	/* check for unmasked and pending */
-	cmpw $0x0001, PER_CPU_VAR(xen_vcpu_info)+XEN_vcpu_info_pending
-	jz 1f
-2:	call check_events
-1:
-ENDPATCH(xen_restore_fl_direct)
-	ret
-	ENDPROC(xen_restore_fl_direct)
-	RELOC(xen_restore_fl_direct, 2b+1)
-
-/*
-	This is run where a normal iret would be run, with the same stack setup:
-	      8: eflags
-	      4: cs
-	esp-> 0: eip
-
-	This attempts to make sure that any pending events are dealt
-	with on return to usermode, but there is a small window in
-	which an event can happen just before entering usermode.  If
-	the nested interrupt ends up setting one of the TIF_WORK_MASK
-	pending work flags, they will not be tested again before
-	returning to usermode. This means that a process can end up
-	with pending work, which will be unprocessed until the process
-	enters and leaves the kernel again, which could be an
-	unbounded amount of time.  This means that a pending signal or
-	reschedule event could be indefinitely delayed.
-
-	The fix is to notice a nested interrupt in the critical
-	window, and if one occurs, then fold the nested interrupt into
-	the current interrupt stack frame, and re-process it
-	iteratively rather than recursively.  This means that it will
-	exit via the normal path, and all pending work will be dealt
-	with appropriately.
-
-	Because the nested interrupt handler needs to deal with the
-	current stack state in whatever form its in, we keep things
-	simple by only using a single register which is pushed/popped
-	on the stack.
-
-	Non-direct iret could be done in the same way, but it would
-	require an annoying amount of code duplication.  We'll assume
-	that direct mode will be the common case once the hypervisor
-	support becomes commonplace.
- */
-ENTRY(xen_iret_direct)
-	/* test eflags for special cases */
-	testl $(X86_EFLAGS_VM | XEN_EFLAGS_NMI), 8(%esp)
-	jnz hyper_iret
-
-	push %eax
-	ESP_OFFSET=4	# bytes pushed onto stack
-
-	/* Store vcpu_info pointer for easy access.  Do it this
-	   way to avoid having to reload %fs */
-#ifdef CONFIG_SMP
-	GET_THREAD_INFO(%eax)
-	movl TI_cpu(%eax),%eax
-	movl __per_cpu_offset(,%eax,4),%eax
-	lea per_cpu__xen_vcpu_info(%eax),%eax
-#else
-	movl $per_cpu__xen_vcpu_info, %eax
-#endif
-
-	/* check IF state we're restoring */
-	testb $X86_EFLAGS_IF>>8, 8+1+ESP_OFFSET(%esp)
-
-	/* Maybe enable events.  Once this happens we could get a
-	   recursive event, so the critical region starts immediately
-	   afterwards.  However, if that happens we don't end up
-	   resuming the code, so we don't have to be worried about
-	   being preempted to another CPU. */
-	setz XEN_vcpu_info_mask(%eax)
-xen_iret_start_crit:
-
-	/* check for unmasked and pending */
-	cmpw $0x0001, XEN_vcpu_info_pending(%eax)
-
-	/* If there's something pending, mask events again so we
-	   can jump back into xen_hypervisor_callback */
-	sete XEN_vcpu_info_mask(%eax)
-
-	popl %eax
-
-	/* From this point on the registers are restored and the stack
-	   updated, so we don't need to worry about it if we're preempted */
-iret_restore_end:
-
-	/* Jump to hypervisor_callback after fixing up the stack.
-	   Events are masked, so jumping out of the critical
-	   region is OK. */
-	je xen_hypervisor_callback
-
-	iret
-xen_iret_end_crit:
-
-hyper_iret:
-	/* put this out of line since its very rarely used */
-	jmp hypercall_page + __HYPERVISOR_iret * 32
-
-	.globl xen_iret_start_crit, xen_iret_end_crit
-
-/*
-   This is called by xen_hypervisor_callback in entry.S when it sees
-   that the EIP at the time of interrupt was between xen_iret_start_crit
-   and xen_iret_end_crit.  We're passed the EIP in %eax so we can do
-   a more refined determination of what to do.
-
-   The stack format at this point is:
-	----------------
-	 ss		: (ss/esp may be present if we came from usermode)
-	 esp		:
-	 eflags		}  outer exception info
-	 cs		}
-	 eip		}
-	---------------- <- edi (copy dest)
-	 eax		:  outer eax if it hasn't been restored
-	----------------
-	 eflags		}  nested exception info
-	 cs		}   (no ss/esp because we're nested
-	 eip		}    from the same ring)
-	 orig_eax	}<- esi (copy src)
-	 - - - - - - - -
-	 fs		}
-	 es		}
-	 ds		}  SAVE_ALL state
-	 eax		}
-	  :		:
-	 ebx		}
-	----------------
-	 return addr	 <- esp
-	----------------
-
-   In order to deliver the nested exception properly, we need to shift
-   everything from the return addr up to the error code so it
-   sits just under the outer exception info.  This means that when we
-   handle the exception, we do it in the context of the outer exception
-   rather than starting a new one.
-
-   The only caveat is that if the outer eax hasn't been
-   restored yet (ie, it's still on stack), we need to insert
-   its value into the SAVE_ALL state before going on, since
-   it's usermode state which we eventually need to restore.
- */
-ENTRY(xen_iret_crit_fixup)
-	/* offsets +4 for return address */
-
-	/*
-	   Paranoia: Make sure we're really coming from userspace.
-	   One could imagine a case where userspace jumps into the
-	   critical range address, but just before the CPU delivers a GP,
-	   it decides to deliver an interrupt instead.  Unlikely?
-	   Definitely.  Easy to avoid?  Yes.  The Intel documents
-	   explicitly say that the reported EIP for a bad jump is the
-	   jump instruction itself, not the destination, but some virtual
-	   environments get this wrong.
-	 */
-	movl PT_CS+4(%esp), %ecx
-	andl $SEGMENT_RPL_MASK, %ecx
-	cmpl $USER_RPL, %ecx
-	je 2f
-
-	lea PT_ORIG_EAX+4(%esp), %esi
-	lea PT_EFLAGS+4(%esp), %edi
-
-	/* If eip is before iret_restore_end then stack
-	   hasn't been restored yet. */
-	cmp $iret_restore_end, %eax
-	jae 1f
-
-	movl 0+4(%edi),%eax		/* copy EAX */
-	movl %eax, PT_EAX+4(%esp)
-
-	lea ESP_OFFSET(%edi),%edi	/* move dest up over saved regs */
-
-	/* set up the copy */
-1:	std
-	mov $(PT_EIP+4) / 4, %ecx	/* copy ret+saved regs up to orig_eax */
-	rep movsl
-	cld
-
-	lea 4(%edi),%esp		/* point esp to new frame */
-2:	ret
-
-
-/*
-	Force an event check by making a hypercall,
-	but preserve regs before making the call.
- */
-check_events:
-	push %eax
-	push %ecx
-	push %edx
-	call force_evtchn_callback
-	pop %edx
-	pop %ecx
-	pop %eax
-	ret
diff --git a/arch/i386/xen/xen-head.S b/arch/i386/xen/xen-head.S
deleted file mode 100644
index f8d6937db2e..00000000000
--- a/arch/i386/xen/xen-head.S
+++ /dev/null
@@ -1,38 +0,0 @@
-/* Xen-specific pieces of head.S, intended to be included in the right
-	place in head.S */
-
-#ifdef CONFIG_XEN
-
-#include <linux/elfnote.h>
-#include <asm/boot.h>
-#include <xen/interface/elfnote.h>
-
-.pushsection .init.text
-ENTRY(startup_xen)
-	movl %esi,xen_start_info
-	cld
-	movl $(init_thread_union+THREAD_SIZE),%esp
-	jmp xen_start_kernel
-.popsection
-
-.pushsection .bss.page_aligned
-	.align PAGE_SIZE_asm
-ENTRY(hypercall_page)
-	.skip 0x1000
-.popsection
-
-	ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS,       .asciz "linux")
-	ELFNOTE(Xen, XEN_ELFNOTE_GUEST_VERSION,  .asciz "2.6")
-	ELFNOTE(Xen, XEN_ELFNOTE_XEN_VERSION,    .asciz "xen-3.0")
-	ELFNOTE(Xen, XEN_ELFNOTE_VIRT_BASE,      .long  __PAGE_OFFSET)
-	ELFNOTE(Xen, XEN_ELFNOTE_ENTRY,          .long  startup_xen)
-	ELFNOTE(Xen, XEN_ELFNOTE_HYPERCALL_PAGE, .long  hypercall_page)
-	ELFNOTE(Xen, XEN_ELFNOTE_FEATURES,       .asciz "!writable_page_tables|pae_pgdir_above_4gb")
-#ifdef CONFIG_X86_PAE
-	ELFNOTE(Xen, XEN_ELFNOTE_PAE_MODE,       .asciz "yes")
-#else
-	ELFNOTE(Xen, XEN_ELFNOTE_PAE_MODE,       .asciz "no")
-#endif
-	ELFNOTE(Xen, XEN_ELFNOTE_LOADER,         .asciz "generic")
-
-#endif /*CONFIG_XEN */
diff --git a/arch/i386/xen/xen-ops.h b/arch/i386/xen/xen-ops.h
deleted file mode 100644
index b9aaea45f07..00000000000
--- a/arch/i386/xen/xen-ops.h
+++ /dev/null
@@ -1,71 +0,0 @@
-#ifndef XEN_OPS_H
-#define XEN_OPS_H
-
-#include <linux/init.h>
-
-/* These are code, but not functions.  Defined in entry.S */
-extern const char xen_hypervisor_callback[];
-extern const char xen_failsafe_callback[];
-
-void xen_copy_trap_info(struct trap_info *traps);
-
-DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu);
-DECLARE_PER_CPU(unsigned long, xen_cr3);
-
-extern struct start_info *xen_start_info;
-extern struct shared_info *HYPERVISOR_shared_info;
-
-char * __init xen_memory_setup(void);
-void __init xen_arch_setup(void);
-void __init xen_init_IRQ(void);
-
-void xen_setup_timer(int cpu);
-void xen_setup_cpu_clockevents(void);
-unsigned long xen_cpu_khz(void);
-void __init xen_time_init(void);
-unsigned long xen_get_wallclock(void);
-int xen_set_wallclock(unsigned long time);
-unsigned long long xen_sched_clock(void);
-
-void xen_mark_init_mm_pinned(void);
-
-DECLARE_PER_CPU(enum paravirt_lazy_mode, xen_lazy_mode);
-
-static inline unsigned xen_get_lazy_mode(void)
-{
-	return x86_read_percpu(xen_lazy_mode);
-}
-
-void __init xen_fill_possible_map(void);
-
-void __init xen_setup_vcpu_info_placement(void);
-void xen_smp_prepare_boot_cpu(void);
-void xen_smp_prepare_cpus(unsigned int max_cpus);
-int xen_cpu_up(unsigned int cpu);
-void xen_smp_cpus_done(unsigned int max_cpus);
-
-void xen_smp_send_stop(void);
-void xen_smp_send_reschedule(int cpu);
-int xen_smp_call_function (void (*func) (void *info), void *info, int nonatomic,
-			   int wait);
-int xen_smp_call_function_single(int cpu, void (*func) (void *info), void *info,
-				 int nonatomic, int wait);
-
-int xen_smp_call_function_mask(cpumask_t mask, void (*func)(void *),
-			       void *info, int wait);
-
-
-/* Declare an asm function, along with symbols needed to make it
-   inlineable */
-#define DECL_ASM(ret, name, ...)		\
-	ret name(__VA_ARGS__);			\
-	extern char name##_end[];		\
-	extern char name##_reloc[]		\
-
-DECL_ASM(void, xen_irq_enable_direct, void);
-DECL_ASM(void, xen_irq_disable_direct, void);
-DECL_ASM(unsigned long, xen_save_fl_direct, void);
-DECL_ASM(void, xen_restore_fl_direct, unsigned long);
-
-void xen_iret_direct(void);
-#endif /* XEN_OPS_H */