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-rw-r--r--arch/ia64/kernel/Makefile22
-rw-r--r--arch/ia64/kernel/acpi.c22
-rw-r--r--arch/ia64/kernel/asm-offsets.c31
-rw-r--r--arch/ia64/kernel/crash_dump.c4
-rw-r--r--arch/ia64/kernel/efi.c2
-rw-r--r--arch/ia64/kernel/entry.S5
-rw-r--r--arch/ia64/kernel/ivt.S6
-rw-r--r--arch/ia64/kernel/msi_ia64.c80
-rw-r--r--arch/ia64/kernel/nr-irqs.c1
-rw-r--r--arch/ia64/kernel/paravirt.c2
-rw-r--r--arch/ia64/kernel/paravirt_inst.h4
-rw-r--r--arch/ia64/kernel/pci-dma.c129
-rw-r--r--arch/ia64/kernel/pci-swiotlb.c46
-rw-r--r--arch/ia64/kernel/perfmon.c7
-rw-r--r--arch/ia64/kernel/process.c22
-rw-r--r--arch/ia64/kernel/ptrace.c112
-rw-r--r--arch/ia64/kernel/setup.c55
-rw-r--r--arch/ia64/kernel/signal.c8
18 files changed, 482 insertions, 76 deletions
diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile
index 87fea11aecb..c381ea95489 100644
--- a/arch/ia64/kernel/Makefile
+++ b/arch/ia64/kernel/Makefile
@@ -42,6 +42,10 @@ obj-$(CONFIG_IA64_ESI) += esi.o
ifneq ($(CONFIG_IA64_ESI),)
obj-y += esi_stub.o # must be in kernel proper
endif
+obj-$(CONFIG_DMAR) += pci-dma.o
+ifeq ($(CONFIG_DMAR), y)
+obj-$(CONFIG_SWIOTLB) += pci-swiotlb.o
+endif
# The gate DSO image is built using a special linker script.
targets += gate.so gate-syms.o
@@ -112,5 +116,23 @@ clean-files += $(objtree)/include/asm-ia64/nr-irqs.h
ASM_PARAVIRT_OBJS = ivt.o entry.o
define paravirtualized_native
AFLAGS_$(1) += -D__IA64_ASM_PARAVIRTUALIZED_NATIVE
+AFLAGS_pvchk-sed-$(1) += -D__IA64_ASM_PARAVIRTUALIZED_PVCHECK
+extra-y += pvchk-$(1)
endef
$(foreach obj,$(ASM_PARAVIRT_OBJS),$(eval $(call paravirtualized_native,$(obj))))
+
+#
+# Checker for paravirtualizations of privileged operations.
+#
+quiet_cmd_pv_check_sed = PVCHK $@
+define cmd_pv_check_sed
+ sed -f $(srctree)/arch/$(SRCARCH)/scripts/pvcheck.sed $< > $@
+endef
+
+$(obj)/pvchk-sed-%.s: $(src)/%.S $(srctree)/arch/$(SRCARCH)/scripts/pvcheck.sed FORCE
+ $(call if_changed_dep,as_s_S)
+$(obj)/pvchk-%.s: $(obj)/pvchk-sed-%.s FORCE
+ $(call if_changed,pv_check_sed)
+$(obj)/pvchk-%.o: $(obj)/pvchk-%.s FORCE
+ $(call if_changed,as_o_S)
+.PRECIOUS: $(obj)/pvchk-sed-%.s $(obj)/pvchk-%.s $(obj)/pvchk-%.o
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index 5d1eb7ee2bf..0635015d0aa 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -52,6 +52,7 @@
#include <asm/numa.h>
#include <asm/sal.h>
#include <asm/cyclone.h>
+#include <asm/xen/hypervisor.h>
#define BAD_MADT_ENTRY(entry, end) ( \
(!entry) || (unsigned long)entry + sizeof(*entry) > end || \
@@ -91,6 +92,9 @@ acpi_get_sysname(void)
struct acpi_table_rsdp *rsdp;
struct acpi_table_xsdt *xsdt;
struct acpi_table_header *hdr;
+#ifdef CONFIG_DMAR
+ u64 i, nentries;
+#endif
rsdp_phys = acpi_find_rsdp();
if (!rsdp_phys) {
@@ -121,7 +125,21 @@ acpi_get_sysname(void)
return "uv";
else
return "sn2";
+ } else if (xen_pv_domain() && !strcmp(hdr->oem_id, "XEN")) {
+ return "xen";
+ }
+
+#ifdef CONFIG_DMAR
+ /* Look for Intel IOMMU */
+ nentries = (hdr->length - sizeof(*hdr)) /
+ sizeof(xsdt->table_offset_entry[0]);
+ for (i = 0; i < nentries; i++) {
+ hdr = __va(xsdt->table_offset_entry[i]);
+ if (strncmp(hdr->signature, ACPI_SIG_DMAR,
+ sizeof(ACPI_SIG_DMAR) - 1) == 0)
+ return "dig_vtd";
}
+#endif
return "dig";
#else
@@ -137,6 +155,10 @@ acpi_get_sysname(void)
return "uv";
# elif defined (CONFIG_IA64_DIG)
return "dig";
+# elif defined (CONFIG_IA64_XEN_GUEST)
+ return "xen";
+# elif defined(CONFIG_IA64_DIG_VTD)
+ return "dig_vtd";
# else
# error Unknown platform. Fix acpi.c.
# endif
diff --git a/arch/ia64/kernel/asm-offsets.c b/arch/ia64/kernel/asm-offsets.c
index 94c44b1ccfd..742dbb1d5a4 100644
--- a/arch/ia64/kernel/asm-offsets.c
+++ b/arch/ia64/kernel/asm-offsets.c
@@ -16,6 +16,9 @@
#include <asm/sigcontext.h>
#include <asm/mca.h>
+#include <asm/xen/interface.h>
+#include <asm/xen/hypervisor.h>
+
#include "../kernel/sigframe.h"
#include "../kernel/fsyscall_gtod_data.h"
@@ -286,4 +289,32 @@ void foo(void)
offsetof (struct itc_jitter_data_t, itc_jitter));
DEFINE(IA64_ITC_LASTCYCLE_OFFSET,
offsetof (struct itc_jitter_data_t, itc_lastcycle));
+
+#ifdef CONFIG_XEN
+ BLANK();
+
+ DEFINE(XEN_NATIVE_ASM, XEN_NATIVE);
+ DEFINE(XEN_PV_DOMAIN_ASM, XEN_PV_DOMAIN);
+
+#define DEFINE_MAPPED_REG_OFS(sym, field) \
+ DEFINE(sym, (XMAPPEDREGS_OFS + offsetof(struct mapped_regs, field)))
+
+ DEFINE_MAPPED_REG_OFS(XSI_PSR_I_ADDR_OFS, interrupt_mask_addr);
+ DEFINE_MAPPED_REG_OFS(XSI_IPSR_OFS, ipsr);
+ DEFINE_MAPPED_REG_OFS(XSI_IIP_OFS, iip);
+ DEFINE_MAPPED_REG_OFS(XSI_IFS_OFS, ifs);
+ DEFINE_MAPPED_REG_OFS(XSI_PRECOVER_IFS_OFS, precover_ifs);
+ DEFINE_MAPPED_REG_OFS(XSI_ISR_OFS, isr);
+ DEFINE_MAPPED_REG_OFS(XSI_IFA_OFS, ifa);
+ DEFINE_MAPPED_REG_OFS(XSI_IIPA_OFS, iipa);
+ DEFINE_MAPPED_REG_OFS(XSI_IIM_OFS, iim);
+ DEFINE_MAPPED_REG_OFS(XSI_IHA_OFS, iha);
+ DEFINE_MAPPED_REG_OFS(XSI_ITIR_OFS, itir);
+ DEFINE_MAPPED_REG_OFS(XSI_PSR_IC_OFS, interrupt_collection_enabled);
+ DEFINE_MAPPED_REG_OFS(XSI_BANKNUM_OFS, banknum);
+ DEFINE_MAPPED_REG_OFS(XSI_BANK0_R16_OFS, bank0_regs[0]);
+ DEFINE_MAPPED_REG_OFS(XSI_BANK1_R16_OFS, bank1_regs[0]);
+ DEFINE_MAPPED_REG_OFS(XSI_B0NATS_OFS, vbnat);
+ DEFINE_MAPPED_REG_OFS(XSI_B1NATS_OFS, vnat);
+#endif /* CONFIG_XEN */
}
diff --git a/arch/ia64/kernel/crash_dump.c b/arch/ia64/kernel/crash_dump.c
index da60e90eeeb..23e91290e41 100644
--- a/arch/ia64/kernel/crash_dump.c
+++ b/arch/ia64/kernel/crash_dump.c
@@ -8,10 +8,14 @@
#include <linux/errno.h>
#include <linux/types.h>
+#include <linux/crash_dump.h>
#include <asm/page.h>
#include <asm/uaccess.h>
+/* Stores the physical address of elf header of crash image. */
+unsigned long long elfcorehdr_addr = ELFCORE_ADDR_MAX;
+
/**
* copy_oldmem_page - copy one page from "oldmem"
* @pfn: page frame number to be copied
diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c
index 51b75cea701..efaff15d8cf 100644
--- a/arch/ia64/kernel/efi.c
+++ b/arch/ia64/kernel/efi.c
@@ -1335,7 +1335,7 @@ kdump_find_rsvd_region (unsigned long size, struct rsvd_region *r, int n)
}
#endif
-#ifdef CONFIG_PROC_VMCORE
+#ifdef CONFIG_CRASH_DUMP
/* locate the size find a the descriptor at a certain address */
unsigned long __init
vmcore_find_descriptor_size (unsigned long address)
diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S
index 0dd6c1419d8..7ef0c594f5e 100644
--- a/arch/ia64/kernel/entry.S
+++ b/arch/ia64/kernel/entry.S
@@ -534,6 +534,11 @@ GLOBAL_ENTRY(ia64_trace_syscall)
stf.spill [r16]=f10
stf.spill [r17]=f11
br.call.sptk.many rp=syscall_trace_enter // give parent a chance to catch syscall args
+ cmp.lt p6,p0=r8,r0 // check tracehook
+ adds r2=PT(R8)+16,sp // r2 = &pt_regs.r8
+ adds r3=PT(R10)+16,sp // r3 = &pt_regs.r10
+ mov r10=0
+(p6) br.cond.sptk strace_error // syscall failed ->
adds r16=PT(F6)+16,sp
adds r17=PT(F7)+16,sp
;;
diff --git a/arch/ia64/kernel/ivt.S b/arch/ia64/kernel/ivt.S
index 416a952b19b..f675d8e3385 100644
--- a/arch/ia64/kernel/ivt.S
+++ b/arch/ia64/kernel/ivt.S
@@ -580,7 +580,7 @@ ENTRY(dirty_bit)
mov b0=r29 // restore b0
;;
st8 [r17]=r18 // store back updated PTE
- itc.d r18 // install updated PTE
+ ITC_D(p0, r18, r16) // install updated PTE
#endif
mov pr=r31,-1 // restore pr
RFI
@@ -646,7 +646,7 @@ ENTRY(iaccess_bit)
mov b0=r29 // restore b0
;;
st8 [r17]=r18 // store back updated PTE
- itc.i r18 // install updated PTE
+ ITC_I(p0, r18, r16) // install updated PTE
#endif /* !CONFIG_SMP */
mov pr=r31,-1
RFI
@@ -698,7 +698,7 @@ ENTRY(daccess_bit)
or r18=_PAGE_A,r18 // set the accessed bit
;;
st8 [r17]=r18 // store back updated PTE
- itc.d r18 // install updated PTE
+ ITC_D(p0, r18, r16) // install updated PTE
#endif
mov b0=r29 // restore b0
mov pr=r31,-1
diff --git a/arch/ia64/kernel/msi_ia64.c b/arch/ia64/kernel/msi_ia64.c
index 60c6ef67ebb..702a09c1323 100644
--- a/arch/ia64/kernel/msi_ia64.c
+++ b/arch/ia64/kernel/msi_ia64.c
@@ -5,6 +5,7 @@
#include <linux/pci.h>
#include <linux/irq.h>
#include <linux/msi.h>
+#include <linux/dmar.h>
#include <asm/smp.h>
/*
@@ -162,3 +163,82 @@ void arch_teardown_msi_irq(unsigned int irq)
return ia64_teardown_msi_irq(irq);
}
+
+#ifdef CONFIG_DMAR
+#ifdef CONFIG_SMP
+static void dmar_msi_set_affinity(unsigned int irq, cpumask_t mask)
+{
+ struct irq_cfg *cfg = irq_cfg + irq;
+ struct msi_msg msg;
+ int cpu = first_cpu(mask);
+
+
+ if (!cpu_online(cpu))
+ return;
+
+ if (irq_prepare_move(irq, cpu))
+ return;
+
+ dmar_msi_read(irq, &msg);
+
+ msg.data &= ~MSI_DATA_VECTOR_MASK;
+ msg.data |= MSI_DATA_VECTOR(cfg->vector);
+ msg.address_lo &= ~MSI_ADDR_DESTID_MASK;
+ msg.address_lo |= MSI_ADDR_DESTID_CPU(cpu_physical_id(cpu));
+
+ dmar_msi_write(irq, &msg);
+ irq_desc[irq].affinity = mask;
+}
+#endif /* CONFIG_SMP */
+
+struct irq_chip dmar_msi_type = {
+ .name = "DMAR_MSI",
+ .unmask = dmar_msi_unmask,
+ .mask = dmar_msi_mask,
+ .ack = ia64_ack_msi_irq,
+#ifdef CONFIG_SMP
+ .set_affinity = dmar_msi_set_affinity,
+#endif
+ .retrigger = ia64_msi_retrigger_irq,
+};
+
+static int
+msi_compose_msg(struct pci_dev *pdev, unsigned int irq, struct msi_msg *msg)
+{
+ struct irq_cfg *cfg = irq_cfg + irq;
+ unsigned dest;
+ cpumask_t mask;
+
+ cpus_and(mask, irq_to_domain(irq), cpu_online_map);
+ dest = cpu_physical_id(first_cpu(mask));
+
+ msg->address_hi = 0;
+ msg->address_lo =
+ MSI_ADDR_HEADER |
+ MSI_ADDR_DESTMODE_PHYS |
+ MSI_ADDR_REDIRECTION_CPU |
+ MSI_ADDR_DESTID_CPU(dest);
+
+ msg->data =
+ MSI_DATA_TRIGGER_EDGE |
+ MSI_DATA_LEVEL_ASSERT |
+ MSI_DATA_DELIVERY_FIXED |
+ MSI_DATA_VECTOR(cfg->vector);
+ return 0;
+}
+
+int arch_setup_dmar_msi(unsigned int irq)
+{
+ int ret;
+ struct msi_msg msg;
+
+ ret = msi_compose_msg(NULL, irq, &msg);
+ if (ret < 0)
+ return ret;
+ dmar_msi_write(irq, &msg);
+ set_irq_chip_and_handler_name(irq, &dmar_msi_type, handle_edge_irq,
+ "edge");
+ return 0;
+}
+#endif /* CONFIG_DMAR */
+
diff --git a/arch/ia64/kernel/nr-irqs.c b/arch/ia64/kernel/nr-irqs.c
index 8273afc32db..ee564575148 100644
--- a/arch/ia64/kernel/nr-irqs.c
+++ b/arch/ia64/kernel/nr-irqs.c
@@ -10,6 +10,7 @@
#include <linux/kbuild.h>
#include <linux/threads.h>
#include <asm/native/irq.h>
+#include <asm/xen/irq.h>
void foo(void)
{
diff --git a/arch/ia64/kernel/paravirt.c b/arch/ia64/kernel/paravirt.c
index afaf5b9a2cf..de35d8e8b7d 100644
--- a/arch/ia64/kernel/paravirt.c
+++ b/arch/ia64/kernel/paravirt.c
@@ -332,7 +332,7 @@ ia64_native_iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
struct pv_iosapic_ops pv_iosapic_ops = {
.pcat_compat_init = ia64_native_iosapic_pcat_compat_init,
- .get_irq_chip = ia64_native_iosapic_get_irq_chip,
+ .__get_irq_chip = ia64_native_iosapic_get_irq_chip,
.__read = ia64_native_iosapic_read,
.__write = ia64_native_iosapic_write,
diff --git a/arch/ia64/kernel/paravirt_inst.h b/arch/ia64/kernel/paravirt_inst.h
index 5cad6fb2ed1..64d6d810c64 100644
--- a/arch/ia64/kernel/paravirt_inst.h
+++ b/arch/ia64/kernel/paravirt_inst.h
@@ -20,7 +20,9 @@
*
*/
-#ifdef __IA64_ASM_PARAVIRTUALIZED_XEN
+#ifdef __IA64_ASM_PARAVIRTUALIZED_PVCHECK
+#include <asm/native/pvchk_inst.h>
+#elif defined(__IA64_ASM_PARAVIRTUALIZED_XEN)
#include <asm/xen/inst.h>
#include <asm/xen/minstate.h>
#else
diff --git a/arch/ia64/kernel/pci-dma.c b/arch/ia64/kernel/pci-dma.c
new file mode 100644
index 00000000000..10a75b55765
--- /dev/null
+++ b/arch/ia64/kernel/pci-dma.c
@@ -0,0 +1,129 @@
+/*
+ * Dynamic DMA mapping support.
+ */
+
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <linux/string.h>
+#include <linux/pci.h>
+#include <linux/module.h>
+#include <linux/dmar.h>
+#include <asm/iommu.h>
+#include <asm/machvec.h>
+#include <linux/dma-mapping.h>
+
+#include <asm/machvec.h>
+#include <asm/system.h>
+
+#ifdef CONFIG_DMAR
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+
+#include <asm/page.h>
+#include <asm/iommu.h>
+
+dma_addr_t bad_dma_address __read_mostly;
+EXPORT_SYMBOL(bad_dma_address);
+
+static int iommu_sac_force __read_mostly;
+
+int no_iommu __read_mostly;
+#ifdef CONFIG_IOMMU_DEBUG
+int force_iommu __read_mostly = 1;
+#else
+int force_iommu __read_mostly;
+#endif
+
+/* Set this to 1 if there is a HW IOMMU in the system */
+int iommu_detected __read_mostly;
+
+/* Dummy device used for NULL arguments (normally ISA). Better would
+ be probably a smaller DMA mask, but this is bug-to-bug compatible
+ to i386. */
+struct device fallback_dev = {
+ .bus_id = "fallback device",
+ .coherent_dma_mask = DMA_32BIT_MASK,
+ .dma_mask = &fallback_dev.coherent_dma_mask,
+};
+
+void __init pci_iommu_alloc(void)
+{
+ /*
+ * The order of these functions is important for
+ * fall-back/fail-over reasons
+ */
+ detect_intel_iommu();
+
+#ifdef CONFIG_SWIOTLB
+ pci_swiotlb_init();
+#endif
+}
+
+static int __init pci_iommu_init(void)
+{
+ if (iommu_detected)
+ intel_iommu_init();
+
+ return 0;
+}
+
+/* Must execute after PCI subsystem */
+fs_initcall(pci_iommu_init);
+
+void pci_iommu_shutdown(void)
+{
+ return;
+}
+
+void __init
+iommu_dma_init(void)
+{
+ return;
+}
+
+struct dma_mapping_ops *dma_ops;
+EXPORT_SYMBOL(dma_ops);
+
+int iommu_dma_supported(struct device *dev, u64 mask)
+{
+ struct dma_mapping_ops *ops = get_dma_ops(dev);
+
+#ifdef CONFIG_PCI
+ if (mask > 0xffffffff && forbid_dac > 0) {
+ dev_info(dev, "Disallowing DAC for device\n");
+ return 0;
+ }
+#endif
+
+ if (ops->dma_supported_op)
+ return ops->dma_supported_op(dev, mask);
+
+ /* Copied from i386. Doesn't make much sense, because it will
+ only work for pci_alloc_coherent.
+ The caller just has to use GFP_DMA in this case. */
+ if (mask < DMA_24BIT_MASK)
+ return 0;
+
+ /* Tell the device to use SAC when IOMMU force is on. This
+ allows the driver to use cheaper accesses in some cases.
+
+ Problem with this is that if we overflow the IOMMU area and
+ return DAC as fallback address the device may not handle it
+ correctly.
+
+ As a special case some controllers have a 39bit address
+ mode that is as efficient as 32bit (aic79xx). Don't force
+ SAC for these. Assume all masks <= 40 bits are of this
+ type. Normally this doesn't make any difference, but gives
+ more gentle handling of IOMMU overflow. */
+ if (iommu_sac_force && (mask >= DMA_40BIT_MASK)) {
+ dev_info(dev, "Force SAC with mask %lx\n", mask);
+ return 0;
+ }
+
+ return 1;
+}
+EXPORT_SYMBOL(iommu_dma_supported);
+
+#endif
diff --git a/arch/ia64/kernel/pci-swiotlb.c b/arch/ia64/kernel/pci-swiotlb.c
new file mode 100644
index 00000000000..16c50516dbc
--- /dev/null
+++ b/arch/ia64/kernel/pci-swiotlb.c
@@ -0,0 +1,46 @@
+/* Glue code to lib/swiotlb.c */
+
+#include <linux/pci.h>
+#include <linux/cache.h>
+#include <linux/module.h>
+#include <linux/dma-mapping.h>
+
+#include <asm/swiotlb.h>
+#include <asm/dma.h>
+#include <asm/iommu.h>
+#include <asm/machvec.h>
+
+int swiotlb __read_mostly;
+EXPORT_SYMBOL(swiotlb);
+
+struct dma_mapping_ops swiotlb_dma_ops = {
+ .mapping_error = swiotlb_dma_mapping_error,
+ .alloc_coherent = swiotlb_alloc_coherent,
+ .free_coherent = swiotlb_free_coherent,
+ .map_single = swiotlb_map_single,
+ .unmap_single = swiotlb_unmap_single,
+ .sync_single_for_cpu = swiotlb_sync_single_for_cpu,
+ .sync_single_for_device = swiotlb_sync_single_for_device,
+ .sync_single_range_for_cpu = swiotlb_sync_single_range_for_cpu,
+ .sync_single_range_for_device = swiotlb_sync_single_range_for_device,
+ .sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
+ .sync_sg_for_device = swiotlb_sync_sg_for_device,
+ .map_sg = swiotlb_map_sg,
+ .unmap_sg = swiotlb_unmap_sg,
+ .dma_supported_op = swiotlb_dma_supported,
+};
+
+void __init pci_swiotlb_init(void)
+{
+ if (!iommu_detected) {
+#ifdef CONFIG_IA64_GENERIC
+ swiotlb = 1;
+ printk(KERN_INFO "PCI-DMA: Re-initialize machine vector.\n");
+ machvec_init("dig");
+ swiotlb_init();
+ dma_ops = &swiotlb_dma_ops;
+#else
+ panic("Unable to find Intel IOMMU");
+#endif
+ }
+}
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index fc8f3509df2..ada4605d122 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -40,6 +40,7 @@
#include <linux/capability.h>
#include <linux/rcupdate.h>
#include <linux/completion.h>
+#include <linux/tracehook.h>
#include <asm/errno.h>
#include <asm/intrinsics.h>
@@ -3684,7 +3685,7 @@ pfm_restart(pfm_context_t *ctx, void *arg, int count, struct pt_regs *regs)
PFM_SET_WORK_PENDING(task, 1);
- tsk_set_notify_resume(task);
+ set_notify_resume(task);
/*
* XXX: send reschedule if task runs on another CPU
@@ -5044,8 +5045,6 @@ pfm_handle_work(void)
PFM_SET_WORK_PENDING(current, 0);
- tsk_clear_notify_resume(current);
-
regs = task_pt_regs(current);
/*
@@ -5414,7 +5413,7 @@ pfm_overflow_handler(struct task_struct *task, pfm_context_t *ctx, u64 pmc0, str
* when coming from ctxsw, current still points to the
* previous task, therefore we must work with task and not current.
*/
- tsk_set_notify_resume(task);
+ set_notify_resume(task);
}
/*
* defer until state is changed (shorten spin window). the context is locked
diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c
index 3ab8373103e..c5716270514 100644
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -28,6 +28,7 @@
#include <linux/delay.h>
#include <linux/kdebug.h>
#include <linux/utsname.h>
+#include <linux/tracehook.h>
#include <asm/cpu.h>
#include <asm/delay.h>
@@ -160,21 +161,6 @@ show_regs (struct pt_regs *regs)
show_stack(NULL, NULL);
}
-void tsk_clear_notify_resume(struct task_struct *tsk)
-{
-#ifdef CONFIG_PERFMON
- if (tsk->thread.pfm_needs_checking)
- return;
-#endif
- if (test_ti_thread_flag(task_thread_info(tsk), TIF_RESTORE_RSE))
- return;
- clear_ti_thread_flag(task_thread_info(tsk), TIF_NOTIFY_RESUME);
-}
-
-/*
- * do_notify_resume_user():
- * Called from notify_resume_user at entry.S, with interrupts disabled.
- */
void
do_notify_resume_user(sigset_t *unused, struct sigscratch *scr, long in_syscall)
{
@@ -203,6 +189,11 @@ do_notify_resume_user(sigset_t *unused, struct sigscratch *scr, long in_syscall)
ia64_do_signal(scr, in_syscall);
}
+ if (test_thread_flag(TIF_NOTIFY_RESUME)) {
+ clear_thread_flag(TIF_NOTIFY_RESUME);
+ tracehook_notify_resume(&scr->pt);
+ }
+
/* copy user rbs to kernel rbs */
if (unlikely(test_thread_flag(TIF_RESTORE_RSE))) {
local_irq_enable(); /* force interrupt enable */
@@ -251,7 +242,6 @@ default_idle (void)
/* We don't actually take CPU down, just spin without interrupts. */
static inline void play_dead(void)
{
- extern void ia64_cpu_local_tick (void);
unsigned int this_cpu = smp_processor_id();
/* Ack it */
diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c
index 2a9943b5947..92c9689b7d9 100644
--- a/arch/ia64/kernel/ptrace.c
+++ b/arch/ia64/kernel/ptrace.c
@@ -22,6 +22,7 @@
#include <linux/signal.h>
#include <linux/regset.h>
#include <linux/elf.h>
+#include <linux/tracehook.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
@@ -603,7 +604,7 @@ void ia64_ptrace_stop(void)
{
if (test_and_set_tsk_thread_flag(current, TIF_RESTORE_RSE))
return;
- tsk_set_notify_resume(current);
+ set_notify_resume(current);
unw_init_running(do_sync_rbs, ia64_sync_user_rbs);
}
@@ -613,7 +614,6 @@ void ia64_ptrace_stop(void)
void ia64_sync_krbs(void)
{
clear_tsk_thread_flag(current, TIF_RESTORE_RSE);
- tsk_clear_notify_resume(current);
unw_init_running(do_sync_rbs, ia64_sync_kernel_rbs);
}
@@ -644,7 +644,7 @@ ptrace_attach_sync_user_rbs (struct task_struct *child)
spin_lock_irq(&child->sighand->siglock);
if (child->state == TASK_STOPPED &&
!test_and_set_tsk_thread_flag(child, TIF_RESTORE_RSE)) {
- tsk_set_notify_resume(child);
+ set_notify_resume(child);
child->state = TASK_TRACED;
stopped = 1;
@@ -1232,37 +1232,16 @@ arch_ptrace (struct task_struct *child, long request, long addr, long data)
}
-static void
-syscall_trace (void)
-{
- /*
- * The 0x80 provides a way for the tracing parent to
- * distinguish between a syscall stop and SIGTRAP delivery.
- */
- ptrace_notify(SIGTRAP
- | ((current->ptrace & PT_TRACESYSGOOD) ? 0x80 : 0));
-
- /*
- * This isn't the same as continuing with a signal, but it
- * will do for normal use. strace only continues with a
- * signal if the stopping signal is not SIGTRAP. -brl
- */
- if (current->exit_code) {
- send_sig(current->exit_code, current, 1);
- current->exit_code = 0;
- }
-}
-
/* "asmlinkage" so the input arguments are preserved... */
-asmlinkage void
+asmlinkage long
syscall_trace_enter (long arg0, long arg1, long arg2, long arg3,
long arg4, long arg5, long arg6, long arg7,
struct pt_regs regs)
{
- if (test_thread_flag(TIF_SYSCALL_TRACE)
- && (current->ptrace & PT_PTRACED))
- syscall_trace();
+ if (test_thread_flag(TIF_SYSCALL_TRACE))
+ if (tracehook_report_syscall_entry(&regs))
+ return -ENOSYS;
/* copy user rbs to kernel rbs */
if (test_thread_flag(TIF_RESTORE_RSE))
@@ -1283,6 +1262,7 @@ syscall_trace_enter (long arg0, long arg1, long arg2, long arg3,
audit_syscall_entry(arch, syscall, arg0, arg1, arg2, arg3);
}
+ return 0;
}
/* "asmlinkage" so the input arguments are preserved... */
@@ -1292,6 +1272,8 @@ syscall_trace_leave (long arg0, long arg1, long arg2, long arg3,
long arg4, long arg5, long arg6, long arg7,
struct pt_regs regs)
{
+ int step;
+
if (unlikely(current->audit_context)) {
int success = AUDITSC_RESULT(regs.r10);
long result = regs.r8;
@@ -1301,10 +1283,9 @@ syscall_trace_leave (long arg0, long arg1, long arg2, long arg3,
audit_syscall_exit(success, result);
}
- if ((test_thread_flag(TIF_SYSCALL_TRACE)
- || test_thread_flag(TIF_SINGLESTEP))
- && (current->ptrace & PT_PTRACED))
- syscall_trace();
+ step = test_thread_flag(TIF_SINGLESTEP);
+ if (step || test_thread_flag(TIF_SYSCALL_TRACE))
+ tracehook_report_syscall_exit(&regs, step);
/* copy user rbs to kernel rbs */
if (test_thread_flag(TIF_RESTORE_RSE))
@@ -1940,7 +1921,7 @@ gpregs_writeback(struct task_struct *target,
{
if (test_and_set_tsk_thread_flag(target, TIF_RESTORE_RSE))
return 0;
- tsk_set_notify_resume(target);
+ set_notify_resume(target);
return do_regset_call(do_gpregs_writeback, target, regset, 0, 0,
NULL, NULL);
}
@@ -2199,3 +2180,68 @@ const struct user_regset_view *task_user_regset_view(struct task_struct *tsk)
#endif
return &user_ia64_view;
}
+
+struct syscall_get_set_args {
+ unsigned int i;
+ unsigned int n;
+ unsigned long *args;
+ struct pt_regs *regs;
+ int rw;
+};
+
+static void syscall_get_set_args_cb(struct unw_frame_info *info, void *data)
+{
+ struct syscall_get_set_args *args = data;
+ struct pt_regs *pt = args->regs;
+ unsigned long *krbs, cfm, ndirty;
+ int i, count;
+
+ if (unw_unwind_to_user(info) < 0)
+ return;
+
+ cfm = pt->cr_ifs;
+ krbs = (unsigned long *)info->task + IA64_RBS_OFFSET/8;
+ ndirty = ia64_rse_num_regs(krbs, krbs + (pt->loadrs >> 19));
+
+ count = 0;
+ if (in_syscall(pt))
+ count = min_t(int, args->n, cfm & 0x7f);
+
+ for (i = 0; i < count; i++) {
+ if (args->rw)
+ *ia64_rse_skip_regs(krbs, ndirty + i + args->i) =
+ args->args[i];
+ else
+ args->args[i] = *ia64_rse_skip_regs(krbs,
+ ndirty + i + args->i);
+ }
+
+ if (!args->rw) {
+ while (i < args->n) {
+ args->args[i] = 0;
+ i++;
+ }
+ }
+}
+
+void ia64_syscall_get_set_arguments(struct task_struct *task,
+ struct pt_regs *regs, unsigned int i, unsigned int n,
+ unsigned long *args, int rw)
+{
+ struct syscall_get_set_args data = {
+ .i = i,
+ .n = n,
+ .args = args,
+ .regs = regs,
+ .rw = rw,
+ };
+
+ if (task == current)
+ unw_init_running(syscall_get_set_args_cb, &data);
+ else {
+ struct unw_frame_info ufi;
+ memset(&ufi, 0, sizeof(ufi));
+ unw_init_from_blocked_task(&ufi, task);
+ syscall_get_set_args_cb(&ufi, &data);
+ }
+}
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index de636b21567..ae7911702bf 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -116,6 +116,13 @@ unsigned int num_io_spaces;
*/
#define I_CACHE_STRIDE_SHIFT 5 /* Safest way to go: 32 bytes by 32 bytes */
unsigned long ia64_i_cache_stride_shift = ~0;
+/*
+ * "clflush_cache_range()" needs to know what processor dependent stride size to
+ * use when it flushes cache lines including both d-cache and i-cache.
+ */
+/* Safest way to go: 32 bytes by 32 bytes */
+#define CACHE_STRIDE_SHIFT 5
+unsigned long ia64_cache_stride_shift = ~0;
/*
* The merge_mask variable needs to be set to (max(iommu_page_size(iommu)) - 1). This
@@ -352,7 +359,7 @@ reserve_memory (void)
}
#endif
-#ifdef CONFIG_PROC_VMCORE
+#ifdef CONFIG_CRASH_KERNEL
if (reserve_elfcorehdr(&rsvd_region[n].start,
&rsvd_region[n].end) == 0)
n++;
@@ -478,7 +485,12 @@ static __init int setup_nomca(char *s)
}
early_param("nomca", setup_nomca);
-#ifdef CONFIG_PROC_VMCORE
+/*
+ * Note: elfcorehdr_addr is not just limited to vmcore. It is also used by
+ * is_kdump_kernel() to determine if we are booting after a panic. Hence
+ * ifdef it under CONFIG_CRASH_DUMP and not CONFIG_PROC_VMCORE.
+ */
+#ifdef CONFIG_CRASH_DUMP
/* elfcorehdr= specifies the location of elf core header
* stored by the crashed kernel.
*/
@@ -502,11 +514,11 @@ int __init reserve_elfcorehdr(unsigned long *start, unsigned long *end)
* to work properly.
*/
- if (elfcorehdr_addr >= ELFCORE_ADDR_MAX)
+ if (!is_vmcore_usable())
return -EINVAL;
if ((length = vmcore_find_descriptor_size(elfcorehdr_addr)) == 0) {
- elfcorehdr_addr = ELFCORE_ADDR_MAX;
+ vmcore_unusable();
return -EINVAL;
}
@@ -847,13 +859,14 @@ setup_per_cpu_areas (void)
}
/*
- * Calculate the max. cache line size.
+ * Do the following calculations:
*
- * In addition, the minimum of the i-cache stride sizes is calculated for
- * "flush_icache_range()".
+ * 1. the max. cache line size.
+ * 2. the minimum of the i-cache stride sizes for "flush_icache_range()".
+ * 3. the minimum of the cache stride sizes for "clflush_cache_range()".
*/
static void __cpuinit
-get_max_cacheline_size (void)
+get_cache_info(void)
{
unsigned long line_size, max = 1;
u64 l, levels, unique_caches;
@@ -867,12 +880,14 @@ get_max_cacheline_size (void)
max = SMP_CACHE_BYTES;
/* Safest setup for "flush_icache_range()" */
ia64_i_cache_stride_shift = I_CACHE_STRIDE_SHIFT;
+ /* Safest setup for "clflush_cache_range()" */
+ ia64_cache_stride_shift = CACHE_STRIDE_SHIFT;
goto out;
}
for (l = 0; l < levels; ++l) {
- status = ia64_pal_cache_config_info(l, /* cache_type (data_or_unified)= */ 2,
- &cci);
+ /* cache_type (data_or_unified)=2 */
+ status = ia64_pal_cache_config_info(l, 2, &cci);
if (status != 0) {
printk(KERN_ERR
"%s: ia64_pal_cache_config_info(l=%lu, 2) failed (status=%ld)\n",
@@ -880,15 +895,21 @@ get_max_cacheline_size (void)
max = SMP_CACHE_BYTES;
/* The safest setup for "flush_icache_range()" */
cci.pcci_stride = I_CACHE_STRIDE_SHIFT;
+ /* The safest setup for "clflush_cache_range()" */
+ ia64_cache_stride_shift = CACHE_STRIDE_SHIFT;
cci.pcci_unified = 1;
+ } else {
+ if (cci.pcci_stride < ia64_cache_stride_shift)
+ ia64_cache_stride_shift = cci.pcci_stride;
+
+ line_size = 1 << cci.pcci_line_size;
+ if (line_size > max)
+ max = line_size;
}
- line_size = 1 << cci.pcci_line_size;
- if (line_size > max)
- max = line_size;
+
if (!cci.pcci_unified) {
- status = ia64_pal_cache_config_info(l,
- /* cache_type (instruction)= */ 1,
- &cci);
+ /* cache_type (instruction)=1*/
+ status = ia64_pal_cache_config_info(l, 1, &cci);
if (status != 0) {
printk(KERN_ERR
"%s: ia64_pal_cache_config_info(l=%lu, 1) failed (status=%ld)\n",
@@ -942,7 +963,7 @@ cpu_init (void)
}
#endif
- get_max_cacheline_size();
+ get_cache_info();
/*
* We can't pass "local_cpu_data" to identify_cpu() because we haven't called
diff --git a/arch/ia64/kernel/signal.c b/arch/ia64/kernel/signal.c
index 19c5a78636f..e12500a9c44 100644
--- a/arch/ia64/kernel/signal.c
+++ b/arch/ia64/kernel/signal.c
@@ -11,6 +11,7 @@
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/ptrace.h>
+#include <linux/tracehook.h>
#include <linux/sched.h>
#include <linux/signal.h>
#include <linux/smp.h>
@@ -439,6 +440,13 @@ handle_signal (unsigned long sig, struct k_sigaction *ka, siginfo_t *info, sigse
sigaddset(&current->blocked, sig);
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
+
+ /*
+ * Let tracing know that we've done the handler setup.
+ */
+ tracehook_signal_handler(sig, info, ka, &scr->pt,
+ test_thread_flag(TIF_SINGLESTEP));
+
return 1;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-16 17:23:25 +0000