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-rw-r--r--arch/arm64/Kconfig2
-rw-r--r--arch/arm64/include/asm/arch_timer.h2
-rw-r--r--arch/arm64/include/asm/debug-monitors.h7
-rw-r--r--arch/arm64/include/asm/system_misc.h3
-rw-r--r--arch/arm64/include/asm/thread_info.h4
-rw-r--r--arch/arm64/include/asm/virt.h13
-rw-r--r--arch/arm64/kernel/asm-offsets.c1
-rw-r--r--arch/arm64/kernel/debug-monitors.c6
-rw-r--r--arch/arm64/kernel/entry.S2
-rw-r--r--arch/arm64/kernel/hw_breakpoint.c4
-rw-r--r--arch/arm64/kernel/process.c4
-rw-r--r--arch/arm64/kernel/smp.c23
-rw-r--r--arch/arm64/kvm/Kconfig51
-rw-r--r--arch/arm64/mm/fault.c46
-rw-r--r--arch/arm64/mm/mmap.c2
-rw-r--r--arch/arm64/xen/hypercall.S1
16 files changed, 113 insertions, 58 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 4143d9b0d87..9737e97f9f3 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -270,6 +270,8 @@ source "drivers/Kconfig"
source "fs/Kconfig"
+source "arch/arm64/kvm/Kconfig"
+
source "arch/arm64/Kconfig.debug"
source "security/Kconfig"
diff --git a/arch/arm64/include/asm/arch_timer.h b/arch/arm64/include/asm/arch_timer.h
index d56ed11ba9a..98abd476992 100644
--- a/arch/arm64/include/asm/arch_timer.h
+++ b/arch/arm64/include/asm/arch_timer.h
@@ -97,7 +97,7 @@ static inline u32 arch_timer_get_cntfrq(void)
return val;
}
-static inline void __cpuinit arch_counter_set_user_access(void)
+static inline void arch_counter_set_user_access(void)
{
u32 cntkctl;
diff --git a/arch/arm64/include/asm/debug-monitors.h b/arch/arm64/include/asm/debug-monitors.h
index ef8235c68c0..a2232d07be9 100644
--- a/arch/arm64/include/asm/debug-monitors.h
+++ b/arch/arm64/include/asm/debug-monitors.h
@@ -83,14 +83,7 @@ static inline int reinstall_suspended_bps(struct pt_regs *regs)
}
#endif
-#ifdef CONFIG_COMPAT
int aarch32_break_handler(struct pt_regs *regs);
-#else
-static int aarch32_break_handler(struct pt_regs *regs)
-{
- return -EFAULT;
-}
-#endif
#endif /* __ASSEMBLY */
#endif /* __KERNEL__ */
diff --git a/arch/arm64/include/asm/system_misc.h b/arch/arm64/include/asm/system_misc.h
index a6e1750369e..7a18fabbe0f 100644
--- a/arch/arm64/include/asm/system_misc.h
+++ b/arch/arm64/include/asm/system_misc.h
@@ -23,6 +23,7 @@
#include <linux/compiler.h>
#include <linux/linkage.h>
#include <linux/irqflags.h>
+#include <linux/reboot.h>
struct pt_regs;
@@ -41,7 +42,7 @@ extern void show_pte(struct mm_struct *mm, unsigned long addr);
extern void __show_regs(struct pt_regs *);
void soft_restart(unsigned long);
-extern void (*arm_pm_restart)(char str, const char *cmd);
+extern void (*arm_pm_restart)(enum reboot_mode reboot_mode, const char *cmd);
#define UDBG_UNDEFINED (1 << 0)
#define UDBG_SYSCALL (1 << 1)
diff --git a/arch/arm64/include/asm/thread_info.h b/arch/arm64/include/asm/thread_info.h
index 3659e460071..23a3c4791d8 100644
--- a/arch/arm64/include/asm/thread_info.h
+++ b/arch/arm64/include/asm/thread_info.h
@@ -24,10 +24,10 @@
#include <linux/compiler.h>
#ifndef CONFIG_ARM64_64K_PAGES
-#define THREAD_SIZE_ORDER 1
+#define THREAD_SIZE_ORDER 2
#endif
-#define THREAD_SIZE 8192
+#define THREAD_SIZE 16384
#define THREAD_START_SP (THREAD_SIZE - 16)
#ifndef __ASSEMBLY__
diff --git a/arch/arm64/include/asm/virt.h b/arch/arm64/include/asm/virt.h
index 439827271e3..26e310c5434 100644
--- a/arch/arm64/include/asm/virt.h
+++ b/arch/arm64/include/asm/virt.h
@@ -21,6 +21,7 @@
#define BOOT_CPU_MODE_EL2 (0x0e12b007)
#ifndef __ASSEMBLY__
+#include <asm/cacheflush.h>
/*
* __boot_cpu_mode records what mode CPUs were booted in.
@@ -36,9 +37,20 @@ extern u32 __boot_cpu_mode[2];
void __hyp_set_vectors(phys_addr_t phys_vector_base);
phys_addr_t __hyp_get_vectors(void);
+static inline void sync_boot_mode(void)
+{
+ /*
+ * As secondaries write to __boot_cpu_mode with caches disabled, we
+ * must flush the corresponding cache entries to ensure the visibility
+ * of their writes.
+ */
+ __flush_dcache_area(__boot_cpu_mode, sizeof(__boot_cpu_mode));
+}
+
/* Reports the availability of HYP mode */
static inline bool is_hyp_mode_available(void)
{
+ sync_boot_mode();
return (__boot_cpu_mode[0] == BOOT_CPU_MODE_EL2 &&
__boot_cpu_mode[1] == BOOT_CPU_MODE_EL2);
}
@@ -46,6 +58,7 @@ static inline bool is_hyp_mode_available(void)
/* Check if the bootloader has booted CPUs in different modes */
static inline bool is_hyp_mode_mismatched(void)
{
+ sync_boot_mode();
return __boot_cpu_mode[0] != __boot_cpu_mode[1];
}
diff --git a/arch/arm64/kernel/asm-offsets.c b/arch/arm64/kernel/asm-offsets.c
index 49c162c03b6..666e231d410 100644
--- a/arch/arm64/kernel/asm-offsets.c
+++ b/arch/arm64/kernel/asm-offsets.c
@@ -21,6 +21,7 @@
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/dma-mapping.h>
+#include <linux/kvm_host.h>
#include <asm/thread_info.h>
#include <asm/memory.h>
#include <asm/cputable.h>
diff --git a/arch/arm64/kernel/debug-monitors.c b/arch/arm64/kernel/debug-monitors.c
index 08018e3df58..cbfacf7fb43 100644
--- a/arch/arm64/kernel/debug-monitors.c
+++ b/arch/arm64/kernel/debug-monitors.c
@@ -141,7 +141,7 @@ static void clear_os_lock(void *unused)
isb();
}
-static int __cpuinit os_lock_notify(struct notifier_block *self,
+static int os_lock_notify(struct notifier_block *self,
unsigned long action, void *data)
{
int cpu = (unsigned long)data;
@@ -150,11 +150,11 @@ static int __cpuinit os_lock_notify(struct notifier_block *self,
return NOTIFY_OK;
}
-static struct notifier_block __cpuinitdata os_lock_nb = {
+static struct notifier_block os_lock_nb = {
.notifier_call = os_lock_notify,
};
-static int __cpuinit debug_monitors_init(void)
+static int debug_monitors_init(void)
{
/* Clear the OS lock. */
smp_call_function(clear_os_lock, NULL, 1);
diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S
index 1d1314280a0..6ad781b21c0 100644
--- a/arch/arm64/kernel/entry.S
+++ b/arch/arm64/kernel/entry.S
@@ -121,7 +121,7 @@
.macro get_thread_info, rd
mov \rd, sp
- and \rd, \rd, #~((1 << 13) - 1) // top of 8K stack
+ and \rd, \rd, #~(THREAD_SIZE - 1) // top of stack
.endm
/*
diff --git a/arch/arm64/kernel/hw_breakpoint.c b/arch/arm64/kernel/hw_breakpoint.c
index 5ab825c59db..329218ca9ff 100644
--- a/arch/arm64/kernel/hw_breakpoint.c
+++ b/arch/arm64/kernel/hw_breakpoint.c
@@ -821,7 +821,7 @@ static void reset_ctrl_regs(void *unused)
}
}
-static int __cpuinit hw_breakpoint_reset_notify(struct notifier_block *self,
+static int hw_breakpoint_reset_notify(struct notifier_block *self,
unsigned long action,
void *hcpu)
{
@@ -831,7 +831,7 @@ static int __cpuinit hw_breakpoint_reset_notify(struct notifier_block *self,
return NOTIFY_OK;
}
-static struct notifier_block __cpuinitdata hw_breakpoint_reset_nb = {
+static struct notifier_block hw_breakpoint_reset_nb = {
.notifier_call = hw_breakpoint_reset_notify,
};
diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
index 46f02c3b501..57fb55c44c9 100644
--- a/arch/arm64/kernel/process.c
+++ b/arch/arm64/kernel/process.c
@@ -81,7 +81,7 @@ void soft_restart(unsigned long addr)
void (*pm_power_off)(void);
EXPORT_SYMBOL_GPL(pm_power_off);
-void (*arm_pm_restart)(char str, const char *cmd);
+void (*arm_pm_restart)(enum reboot_mode reboot_mode, const char *cmd);
EXPORT_SYMBOL_GPL(arm_pm_restart);
void arch_cpu_idle_prepare(void)
@@ -132,7 +132,7 @@ void machine_restart(char *cmd)
/* Now call the architecture specific reboot code. */
if (arm_pm_restart)
- arm_pm_restart('h', cmd);
+ arm_pm_restart(reboot_mode, cmd);
/*
* Whoops - the architecture was unable to reboot.
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
index 5d54e3717bf..fee5cce8345 100644
--- a/arch/arm64/kernel/smp.c
+++ b/arch/arm64/kernel/smp.c
@@ -71,7 +71,7 @@ static DEFINE_RAW_SPINLOCK(boot_lock);
* in coherency or not. This is necessary for the hotplug code to work
* reliably.
*/
-static void __cpuinit write_pen_release(u64 val)
+static void write_pen_release(u64 val)
{
void *start = (void *)&secondary_holding_pen_release;
unsigned long size = sizeof(secondary_holding_pen_release);
@@ -84,7 +84,7 @@ static void __cpuinit write_pen_release(u64 val)
* Boot a secondary CPU, and assign it the specified idle task.
* This also gives us the initial stack to use for this CPU.
*/
-static int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
+static int boot_secondary(unsigned int cpu, struct task_struct *idle)
{
unsigned long timeout;
@@ -122,7 +122,7 @@ static int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
static DECLARE_COMPLETION(cpu_running);
-int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *idle)
+int __cpu_up(unsigned int cpu, struct task_struct *idle)
{
int ret;
@@ -162,7 +162,7 @@ int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *idle)
* This is the secondary CPU boot entry. We're using this CPUs
* idle thread stack, but a set of temporary page tables.
*/
-asmlinkage void __cpuinit secondary_start_kernel(void)
+asmlinkage void secondary_start_kernel(void)
{
struct mm_struct *mm = &init_mm;
unsigned int cpu = smp_processor_id();
@@ -200,13 +200,6 @@ asmlinkage void __cpuinit secondary_start_kernel(void)
raw_spin_unlock(&boot_lock);
/*
- * Enable local interrupts.
- */
- notify_cpu_starting(cpu);
- local_irq_enable();
- local_fiq_enable();
-
- /*
* OK, now it's safe to let the boot CPU continue. Wait for
* the CPU migration code to notice that the CPU is online
* before we continue.
@@ -215,6 +208,14 @@ asmlinkage void __cpuinit secondary_start_kernel(void)
complete(&cpu_running);
/*
+ * Enable GIC and timers.
+ */
+ notify_cpu_starting(cpu);
+
+ local_irq_enable();
+ local_fiq_enable();
+
+ /*
* OK, it's off to the idle thread for us
*/
cpu_startup_entry(CPUHP_ONLINE);
diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig
new file mode 100644
index 00000000000..21e90820bd2
--- /dev/null
+++ b/arch/arm64/kvm/Kconfig
@@ -0,0 +1,51 @@
+#
+# KVM configuration
+#
+
+source "virt/kvm/Kconfig"
+
+menuconfig VIRTUALIZATION
+ bool "Virtualization"
+ ---help---
+ Say Y here to get to see options for using your Linux host to run
+ other operating systems inside virtual machines (guests).
+ This option alone does not add any kernel code.
+
+ If you say N, all options in this submenu will be skipped and
+ disabled.
+
+if VIRTUALIZATION
+
+config KVM
+ bool "Kernel-based Virtual Machine (KVM) support"
+ select MMU_NOTIFIER
+ select PREEMPT_NOTIFIERS
+ select ANON_INODES
+ select KVM_MMIO
+ select KVM_ARM_HOST
+ select KVM_ARM_VGIC
+ select KVM_ARM_TIMER
+ ---help---
+ Support hosting virtualized guest machines.
+
+ If unsure, say N.
+
+config KVM_ARM_HOST
+ bool
+ ---help---
+ Provides host support for ARM processors.
+
+config KVM_ARM_VGIC
+ bool
+ depends on KVM_ARM_HOST && OF
+ select HAVE_KVM_IRQCHIP
+ ---help---
+ Adds support for a hardware assisted, in-kernel GIC emulation.
+
+config KVM_ARM_TIMER
+ bool
+ depends on KVM_ARM_VGIC
+ ---help---
+ Adds support for the Architected Timers in virtual machines.
+
+endif # VIRTUALIZATION
diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
index 0ecac8980aa..6c8ba25bf6b 100644
--- a/arch/arm64/mm/fault.c
+++ b/arch/arm64/mm/fault.c
@@ -152,25 +152,8 @@ void do_bad_area(unsigned long addr, unsigned int esr, struct pt_regs *regs)
#define ESR_CM (1 << 8)
#define ESR_LNX_EXEC (1 << 24)
-/*
- * Check that the permissions on the VMA allow for the fault which occurred.
- * If we encountered a write fault, we must have write permission, otherwise
- * we allow any permission.
- */
-static inline bool access_error(unsigned int esr, struct vm_area_struct *vma)
-{
- unsigned int mask = VM_READ | VM_WRITE | VM_EXEC;
-
- if (esr & ESR_WRITE)
- mask = VM_WRITE;
- if (esr & ESR_LNX_EXEC)
- mask = VM_EXEC;
-
- return vma->vm_flags & mask ? false : true;
-}
-
static int __do_page_fault(struct mm_struct *mm, unsigned long addr,
- unsigned int esr, unsigned int flags,
+ unsigned int mm_flags, unsigned long vm_flags,
struct task_struct *tsk)
{
struct vm_area_struct *vma;
@@ -188,12 +171,17 @@ static int __do_page_fault(struct mm_struct *mm, unsigned long addr,
* it.
*/
good_area:
- if (access_error(esr, vma)) {
+ /*
+ * Check that the permissions on the VMA allow for the fault which
+ * occurred. If we encountered a write or exec fault, we must have
+ * appropriate permissions, otherwise we allow any permission.
+ */
+ if (!(vma->vm_flags & vm_flags)) {
fault = VM_FAULT_BADACCESS;
goto out;
}
- return handle_mm_fault(mm, vma, addr & PAGE_MASK, flags);
+ return handle_mm_fault(mm, vma, addr & PAGE_MASK, mm_flags);
check_stack:
if (vma->vm_flags & VM_GROWSDOWN && !expand_stack(vma, addr))
@@ -208,9 +196,15 @@ static int __kprobes do_page_fault(unsigned long addr, unsigned int esr,
struct task_struct *tsk;
struct mm_struct *mm;
int fault, sig, code;
- bool write = (esr & ESR_WRITE) && !(esr & ESR_CM);
- unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE |
- (write ? FAULT_FLAG_WRITE : 0);
+ unsigned long vm_flags = VM_READ | VM_WRITE | VM_EXEC;
+ unsigned int mm_flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
+
+ if (esr & ESR_LNX_EXEC) {
+ vm_flags = VM_EXEC;
+ } else if ((esr & ESR_WRITE) && !(esr & ESR_CM)) {
+ vm_flags = VM_WRITE;
+ mm_flags |= FAULT_FLAG_WRITE;
+ }
tsk = current;
mm = tsk->mm;
@@ -248,7 +242,7 @@ retry:
#endif
}
- fault = __do_page_fault(mm, addr, esr, flags, tsk);
+ fault = __do_page_fault(mm, addr, mm_flags, vm_flags, tsk);
/*
* If we need to retry but a fatal signal is pending, handle the
@@ -265,7 +259,7 @@ retry:
*/
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, addr);
- if (flags & FAULT_FLAG_ALLOW_RETRY) {
+ if (mm_flags & FAULT_FLAG_ALLOW_RETRY) {
if (fault & VM_FAULT_MAJOR) {
tsk->maj_flt++;
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, regs,
@@ -280,7 +274,7 @@ retry:
* Clear FAULT_FLAG_ALLOW_RETRY to avoid any risk of
* starvation.
*/
- flags &= ~FAULT_FLAG_ALLOW_RETRY;
+ mm_flags &= ~FAULT_FLAG_ALLOW_RETRY;
goto retry;
}
}
diff --git a/arch/arm64/mm/mmap.c b/arch/arm64/mm/mmap.c
index 7c7be785563..8ed6cb1a900 100644
--- a/arch/arm64/mm/mmap.c
+++ b/arch/arm64/mm/mmap.c
@@ -90,11 +90,9 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
if (mmap_is_legacy()) {
mm->mmap_base = TASK_UNMAPPED_BASE;
mm->get_unmapped_area = arch_get_unmapped_area;
- mm->unmap_area = arch_unmap_area;
} else {
mm->mmap_base = mmap_base();
mm->get_unmapped_area = arch_get_unmapped_area_topdown;
- mm->unmap_area = arch_unmap_area_topdown;
}
}
EXPORT_SYMBOL_GPL(arch_pick_mmap_layout);
diff --git a/arch/arm64/xen/hypercall.S b/arch/arm64/xen/hypercall.S
index 2816c479cd4..531342ec4bc 100644
--- a/arch/arm64/xen/hypercall.S
+++ b/arch/arm64/xen/hypercall.S
@@ -79,6 +79,7 @@ HYPERCALL2(hvm_op);
HYPERCALL2(memory_op);
HYPERCALL2(physdev_op);
HYPERCALL3(vcpu_op);
+HYPERCALL1(tmem_op);
ENTRY(privcmd_call)
mov x16, x0
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-17 11:42:02 +0000