summaryrefslogtreecommitdiff
path: root/arch/x86/kernel
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/kernel')
-rw-r--r--arch/x86/kernel/acpi/boot.c13
-rw-r--r--arch/x86/kernel/amd_iommu.c23
-rw-r--r--arch/x86/kernel/amd_iommu_init.c3
-rw-r--r--arch/x86/kernel/apic/apic.c17
-rw-r--r--arch/x86/kernel/apic/probe_32.c29
-rw-r--r--arch/x86/kernel/apic/probe_64.c2
-rw-r--r--arch/x86/kernel/cpu/Makefile2
-rw-r--r--arch/x86/kernel/cpu/cpu_debug.c688
-rw-r--r--arch/x86/kernel/cpu/cpufreq/powernow-k8.c3
-rw-r--r--arch/x86/kernel/cpuid.c2
-rw-r--r--arch/x86/kernel/hpet.c8
-rw-r--r--arch/x86/kernel/hw_breakpoint.c30
-rw-r--r--arch/x86/kernel/kgdb.c222
-rw-r--r--arch/x86/kernel/microcode_amd.c44
-rw-r--r--arch/x86/kernel/microcode_core.c6
-rw-r--r--arch/x86/kernel/mpparse.c7
-rw-r--r--arch/x86/kernel/msr.c2
-rw-r--r--arch/x86/kernel/process.c12
-rw-r--r--arch/x86/kernel/process_64.c12
-rw-r--r--arch/x86/kernel/ptrace.c7
-rw-r--r--arch/x86/kernel/quirks.c13
-rw-r--r--arch/x86/kernel/reboot.c9
-rw-r--r--arch/x86/kernel/setup.c14
-rw-r--r--arch/x86/kernel/smpboot.c2
-rw-r--r--arch/x86/kernel/uv_time.c13
25 files changed, 306 insertions, 877 deletions
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 036d28adf59d..af1c5833ff23 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -1185,9 +1185,6 @@ static void __init acpi_process_madt(void)
if (!error) {
acpi_lapic = 1;
-#ifdef CONFIG_X86_BIGSMP
- generic_bigsmp_probe();
-#endif
/*
* Parse MADT IO-APIC entries
*/
@@ -1197,8 +1194,6 @@ static void __init acpi_process_madt(void)
acpi_ioapic = 1;
smp_found_config = 1;
- if (apic->setup_apic_routing)
- apic->setup_apic_routing();
}
}
if (error == -EINVAL) {
@@ -1349,14 +1344,6 @@ static struct dmi_system_id __initdata acpi_dmi_table[] = {
},
{
.callback = force_acpi_ht,
- .ident = "ASUS P2B-DS",
- .matches = {
- DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
- DMI_MATCH(DMI_BOARD_NAME, "P2B-DS"),
- },
- },
- {
- .callback = force_acpi_ht,
.ident = "ASUS CUR-DLS",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 23824fef789c..adb0ba025702 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -980,7 +980,7 @@ static int alloc_new_range(struct dma_ops_domain *dma_dom,
{
int index = dma_dom->aperture_size >> APERTURE_RANGE_SHIFT;
struct amd_iommu *iommu;
- int i;
+ unsigned long i;
#ifdef CONFIG_IOMMU_STRESS
populate = false;
@@ -1489,11 +1489,14 @@ static void __detach_device(struct device *dev)
{
struct iommu_dev_data *dev_data = get_dev_data(dev);
struct iommu_dev_data *alias_data;
+ struct protection_domain *domain;
unsigned long flags;
BUG_ON(!dev_data->domain);
- spin_lock_irqsave(&dev_data->domain->lock, flags);
+ domain = dev_data->domain;
+
+ spin_lock_irqsave(&domain->lock, flags);
if (dev_data->alias != dev) {
alias_data = get_dev_data(dev_data->alias);
@@ -1504,13 +1507,15 @@ static void __detach_device(struct device *dev)
if (atomic_dec_and_test(&dev_data->bind))
do_detach(dev);
- spin_unlock_irqrestore(&dev_data->domain->lock, flags);
+ spin_unlock_irqrestore(&domain->lock, flags);
/*
* If we run in passthrough mode the device must be assigned to the
- * passthrough domain if it is detached from any other domain
+ * passthrough domain if it is detached from any other domain.
+ * Make sure we can deassign from the pt_domain itself.
*/
- if (iommu_pass_through && dev_data->domain == NULL)
+ if (iommu_pass_through &&
+ (dev_data->domain == NULL && domain != pt_domain))
__attach_device(dev, pt_domain);
}
@@ -2218,6 +2223,12 @@ static struct dma_map_ops amd_iommu_dma_ops = {
/*
* The function which clues the AMD IOMMU driver into dma_ops.
*/
+
+void __init amd_iommu_init_api(void)
+{
+ register_iommu(&amd_iommu_ops);
+}
+
int __init amd_iommu_init_dma_ops(void)
{
struct amd_iommu *iommu;
@@ -2253,8 +2264,6 @@ int __init amd_iommu_init_dma_ops(void)
/* Make the driver finally visible to the drivers */
dma_ops = &amd_iommu_dma_ops;
- register_iommu(&amd_iommu_ops);
-
amd_iommu_stats_init();
return 0;
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index fb490ce7dd55..9dc91b431470 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -1292,9 +1292,12 @@ static int __init amd_iommu_init(void)
ret = amd_iommu_init_passthrough();
else
ret = amd_iommu_init_dma_ops();
+
if (ret)
goto free;
+ amd_iommu_init_api();
+
amd_iommu_init_notifier();
enable_iommus();
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 3987e4408f75..dfca210f6a10 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -1641,9 +1641,7 @@ int __init APIC_init_uniprocessor(void)
#endif
enable_IR_x2apic();
-#ifdef CONFIG_X86_64
default_setup_apic_routing();
-#endif
verify_local_APIC();
connect_bsp_APIC();
@@ -1891,21 +1889,6 @@ void __cpuinit generic_processor_info(int apicid, int version)
if (apicid > max_physical_apicid)
max_physical_apicid = apicid;
-#ifdef CONFIG_X86_32
- if (num_processors > 8) {
- switch (boot_cpu_data.x86_vendor) {
- case X86_VENDOR_INTEL:
- if (!APIC_XAPIC(version)) {
- def_to_bigsmp = 0;
- break;
- }
- /* If P4 and above fall through */
- case X86_VENDOR_AMD:
- def_to_bigsmp = 1;
- }
- }
-#endif
-
#if defined(CONFIG_SMP) || defined(CONFIG_X86_64)
early_per_cpu(x86_cpu_to_apicid, cpu) = apicid;
early_per_cpu(x86_bios_cpu_apicid, cpu) = apicid;
diff --git a/arch/x86/kernel/apic/probe_32.c b/arch/x86/kernel/apic/probe_32.c
index 1a6559f6768c..99d2fe016084 100644
--- a/arch/x86/kernel/apic/probe_32.c
+++ b/arch/x86/kernel/apic/probe_32.c
@@ -52,7 +52,32 @@ static int __init print_ipi_mode(void)
}
late_initcall(print_ipi_mode);
-void default_setup_apic_routing(void)
+void __init default_setup_apic_routing(void)
+{
+ int version = apic_version[boot_cpu_physical_apicid];
+
+ if (num_possible_cpus() > 8) {
+ switch (boot_cpu_data.x86_vendor) {
+ case X86_VENDOR_INTEL:
+ if (!APIC_XAPIC(version)) {
+ def_to_bigsmp = 0;
+ break;
+ }
+ /* If P4 and above fall through */
+ case X86_VENDOR_AMD:
+ def_to_bigsmp = 1;
+ }
+ }
+
+#ifdef CONFIG_X86_BIGSMP
+ generic_bigsmp_probe();
+#endif
+
+ if (apic->setup_apic_routing)
+ apic->setup_apic_routing();
+}
+
+static void setup_apic_flat_routing(void)
{
#ifdef CONFIG_X86_IO_APIC
printk(KERN_INFO
@@ -103,7 +128,7 @@ struct apic apic_default = {
.init_apic_ldr = default_init_apic_ldr,
.ioapic_phys_id_map = default_ioapic_phys_id_map,
- .setup_apic_routing = default_setup_apic_routing,
+ .setup_apic_routing = setup_apic_flat_routing,
.multi_timer_check = NULL,
.apicid_to_node = default_apicid_to_node,
.cpu_to_logical_apicid = default_cpu_to_logical_apicid,
diff --git a/arch/x86/kernel/apic/probe_64.c b/arch/x86/kernel/apic/probe_64.c
index 450fe2064a14..83e9be4778e2 100644
--- a/arch/x86/kernel/apic/probe_64.c
+++ b/arch/x86/kernel/apic/probe_64.c
@@ -67,7 +67,7 @@ void __init default_setup_apic_routing(void)
}
#endif
- if (apic == &apic_flat && num_processors > 8)
+ if (apic == &apic_flat && num_possible_cpus() > 8)
apic = &apic_physflat;
printk(KERN_INFO "Setting APIC routing to %s\n", apic->name);
diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
index 1d2cb383410e..c202b62f3671 100644
--- a/arch/x86/kernel/cpu/Makefile
+++ b/arch/x86/kernel/cpu/Makefile
@@ -19,8 +19,6 @@ obj-y += vmware.o hypervisor.o sched.o
obj-$(CONFIG_X86_32) += bugs.o cmpxchg.o
obj-$(CONFIG_X86_64) += bugs_64.o
-obj-$(CONFIG_X86_CPU_DEBUG) += cpu_debug.o
-
obj-$(CONFIG_CPU_SUP_INTEL) += intel.o
obj-$(CONFIG_CPU_SUP_AMD) += amd.o
obj-$(CONFIG_CPU_SUP_CYRIX_32) += cyrix.o
diff --git a/arch/x86/kernel/cpu/cpu_debug.c b/arch/x86/kernel/cpu/cpu_debug.c
deleted file mode 100644
index b368cd862997..000000000000
--- a/arch/x86/kernel/cpu/cpu_debug.c
+++ /dev/null
@@ -1,688 +0,0 @@
-/*
- * CPU x86 architecture debug code
- *
- * Copyright(C) 2009 Jaswinder Singh Rajput
- *
- * For licencing details see kernel-base/COPYING
- */
-
-#include <linux/interrupt.h>
-#include <linux/compiler.h>
-#include <linux/seq_file.h>
-#include <linux/debugfs.h>
-#include <linux/kprobes.h>
-#include <linux/uaccess.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/percpu.h>
-#include <linux/signal.h>
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/smp.h>
-
-#include <asm/cpu_debug.h>
-#include <asm/paravirt.h>
-#include <asm/system.h>
-#include <asm/traps.h>
-#include <asm/apic.h>
-#include <asm/desc.h>
-
-static DEFINE_PER_CPU(struct cpu_cpuX_base [CPU_REG_ALL_BIT], cpud_arr);
-static DEFINE_PER_CPU(struct cpu_private * [MAX_CPU_FILES], cpud_priv_arr);
-static DEFINE_PER_CPU(int, cpud_priv_count);
-
-static DEFINE_MUTEX(cpu_debug_lock);
-
-static struct dentry *cpu_debugfs_dir;
-
-static struct cpu_debug_base cpu_base[] = {
- { "mc", CPU_MC, 0 },
- { "monitor", CPU_MONITOR, 0 },
- { "time", CPU_TIME, 0 },
- { "pmc", CPU_PMC, 1 },
- { "platform", CPU_PLATFORM, 0 },
- { "apic", CPU_APIC, 0 },
- { "poweron", CPU_POWERON, 0 },
- { "control", CPU_CONTROL, 0 },
- { "features", CPU_FEATURES, 0 },
- { "lastbranch", CPU_LBRANCH, 0 },
- { "bios", CPU_BIOS, 0 },
- { "freq", CPU_FREQ, 0 },
- { "mtrr", CPU_MTRR, 0 },
- { "perf", CPU_PERF, 0 },
- { "cache", CPU_CACHE, 0 },
- { "sysenter", CPU_SYSENTER, 0 },
- { "therm", CPU_THERM, 0 },
- { "misc", CPU_MISC, 0 },
- { "debug", CPU_DEBUG, 0 },
- { "pat", CPU_PAT, 0 },
- { "vmx", CPU_VMX, 0 },
- { "call", CPU_CALL, 0 },
- { "base", CPU_BASE, 0 },
- { "ver", CPU_VER, 0 },
- { "conf", CPU_CONF, 0 },
- { "smm", CPU_SMM, 0 },
- { "svm", CPU_SVM, 0 },
- { "osvm", CPU_OSVM, 0 },
- { "tss", CPU_TSS, 0 },
- { "cr", CPU_CR, 0 },
- { "dt", CPU_DT, 0 },
- { "registers", CPU_REG_ALL, 0 },
-};
-
-static struct cpu_file_base cpu_file[] = {
- { "index", CPU_REG_ALL, 0 },
- { "value", CPU_REG_ALL, 1 },
-};
-
-/* CPU Registers Range */
-static struct cpu_debug_range cpu_reg_range[] = {
- { 0x00000000, 0x00000001, CPU_MC, },
- { 0x00000006, 0x00000007, CPU_MONITOR, },
- { 0x00000010, 0x00000010, CPU_TIME, },
- { 0x00000011, 0x00000013, CPU_PMC, },
- { 0x00000017, 0x00000017, CPU_PLATFORM, },
- { 0x0000001B, 0x0000001B, CPU_APIC, },
- { 0x0000002A, 0x0000002B, CPU_POWERON, },
- { 0x0000002C, 0x0000002C, CPU_FREQ, },
- { 0x0000003A, 0x0000003A, CPU_CONTROL, },
- { 0x00000040, 0x00000047, CPU_LBRANCH, },
- { 0x00000060, 0x00000067, CPU_LBRANCH, },
- { 0x00000079, 0x00000079, CPU_BIOS, },
- { 0x00000088, 0x0000008A, CPU_CACHE, },
- { 0x0000008B, 0x0000008B, CPU_BIOS, },
- { 0x0000009B, 0x0000009B, CPU_MONITOR, },
- { 0x000000C1, 0x000000C4, CPU_PMC, },
- { 0x000000CD, 0x000000CD, CPU_FREQ, },
- { 0x000000E7, 0x000000E8, CPU_PERF, },
- { 0x000000FE, 0x000000FE, CPU_MTRR, },
-
- { 0x00000116, 0x0000011E, CPU_CACHE, },
- { 0x00000174, 0x00000176, CPU_SYSENTER, },
- { 0x00000179, 0x0000017B, CPU_MC, },
- { 0x00000186, 0x00000189, CPU_PMC, },
- { 0x00000198, 0x00000199, CPU_PERF, },
- { 0x0000019A, 0x0000019A, CPU_TIME, },
- { 0x0000019B, 0x0000019D, CPU_THERM, },
- { 0x000001A0, 0x000001A0, CPU_MISC, },
- { 0x000001C9, 0x000001C9, CPU_LBRANCH, },
- { 0x000001D7, 0x000001D8, CPU_LBRANCH, },
- { 0x000001D9, 0x000001D9, CPU_DEBUG, },
- { 0x000001DA, 0x000001E0, CPU_LBRANCH, },
-
- { 0x00000200, 0x0000020F, CPU_MTRR, },
- { 0x00000250, 0x00000250, CPU_MTRR, },
- { 0x00000258, 0x00000259, CPU_MTRR, },
- { 0x00000268, 0x0000026F, CPU_MTRR, },
- { 0x00000277, 0x00000277, CPU_PAT, },
- { 0x000002FF, 0x000002FF, CPU_MTRR, },
-
- { 0x00000300, 0x00000311, CPU_PMC, },
- { 0x00000345, 0x00000345, CPU_PMC, },
- { 0x00000360, 0x00000371, CPU_PMC, },
- { 0x0000038D, 0x00000390, CPU_PMC, },
- { 0x000003A0, 0x000003BE, CPU_PMC, },
- { 0x000003C0, 0x000003CD, CPU_PMC, },
- { 0x000003E0, 0x000003E1, CPU_PMC, },
- { 0x000003F0, 0x000003F2, CPU_PMC, },
-
- { 0x00000400, 0x00000417, CPU_MC, },
- { 0x00000480, 0x0000048B, CPU_VMX, },
-
- { 0x00000600, 0x00000600, CPU_DEBUG, },
- { 0x00000680, 0x0000068F, CPU_LBRANCH, },
- { 0x000006C0, 0x000006CF, CPU_LBRANCH, },
-
- { 0x000107CC, 0x000107D3, CPU_PMC, },
-
- { 0xC0000080, 0xC0000080, CPU_FEATURES, },
- { 0xC0000081, 0xC0000084, CPU_CALL, },
- { 0xC0000100, 0xC0000102, CPU_BASE, },
- { 0xC0000103, 0xC0000103, CPU_TIME, },
-
- { 0xC0010000, 0xC0010007, CPU_PMC, },
- { 0xC0010010, 0xC0010010, CPU_CONF, },
- { 0xC0010015, 0xC0010015, CPU_CONF, },
- { 0xC0010016, 0xC001001A, CPU_MTRR, },
- { 0xC001001D, 0xC001001D, CPU_MTRR, },
- { 0xC001001F, 0xC001001F, CPU_CONF, },
- { 0xC0010030, 0xC0010035, CPU_BIOS, },
- { 0xC0010044, 0xC0010048, CPU_MC, },
- { 0xC0010050, 0xC0010056, CPU_SMM, },
- { 0xC0010058, 0xC0010058, CPU_CONF, },
- { 0xC0010060, 0xC0010060, CPU_CACHE, },
- { 0xC0010061, 0xC0010068, CPU_SMM, },
- { 0xC0010069, 0xC001006B, CPU_SMM, },
- { 0xC0010070, 0xC0010071, CPU_SMM, },
- { 0xC0010111, 0xC0010113, CPU_SMM, },
- { 0xC0010114, 0xC0010118, CPU_SVM, },
- { 0xC0010140, 0xC0010141, CPU_OSVM, },
- { 0xC0011022, 0xC0011023, CPU_CONF, },
-};
-
-static int is_typeflag_valid(unsigned cpu, unsigned flag)
-{
- int i;
-
- /* Standard Registers should be always valid */
- if (flag >= CPU_TSS)
- return 1;
-
- for (i = 0; i < ARRAY_SIZE(cpu_reg_range); i++) {
- if (cpu_reg_range[i].flag == flag)
- return 1;
- }
-
- /* Invalid */
- return 0;
-}
-
-static unsigned get_cpu_range(unsigned cpu, unsigned *min, unsigned *max,
- int index, unsigned flag)
-{
- if (cpu_reg_range[index].flag == flag) {
- *min = cpu_reg_range[index].min;
- *max = cpu_reg_range[index].max;
- } else
- *max = 0;
-
- return *max;
-}
-
-/* This function can also be called with seq = NULL for printk */
-static void print_cpu_data(struct seq_file *seq, unsigned type,
- u32 low, u32 high)
-{
- struct cpu_private *priv;
- u64 val = high;
-
- if (seq) {
- priv = seq->private;
- if (priv->file) {
- val = (val << 32) | low;
- seq_printf(seq, "0x%llx\n", val);
- } else
- seq_printf(seq, " %08x: %08x_%08x\n",
- type, high, low);
- } else
- printk(KERN_INFO " %08x: %08x_%08x\n", type, high, low);
-}
-
-/* This function can also be called with seq = NULL for printk */
-static void print_msr(struct seq_file *seq, unsigned cpu, unsigned flag)
-{
- unsigned msr, msr_min, msr_max;
- struct cpu_private *priv;
- u32 low, high;
- int i;
-
- if (seq) {
- priv = seq->private;
- if (priv->file) {
- if (!rdmsr_safe_on_cpu(priv->cpu, priv->reg,
- &low, &high))
- print_cpu_data(seq, priv->reg, low, high);
- return;
- }
- }
-
- for (i = 0; i < ARRAY_SIZE(cpu_reg_range); i++) {
- if (!get_cpu_range(cpu, &msr_min, &msr_max, i, flag))
- continue;
-
- for (msr = msr_min; msr <= msr_max; msr++) {
- if (rdmsr_safe_on_cpu(cpu, msr, &low, &high))
- continue;
- print_cpu_data(seq, msr, low, high);
- }
- }
-}
-
-static void print_tss(void *arg)
-{
- struct pt_regs *regs = task_pt_regs(current);
- struct seq_file *seq = arg;
- unsigned int seg;
-
- seq_printf(seq, " RAX\t: %016lx\n", regs->ax);
- seq_printf(seq, " RBX\t: %016lx\n", regs->bx);
- seq_printf(seq, " RCX\t: %016lx\n", regs->cx);
- seq_printf(seq, " RDX\t: %016lx\n", regs->dx);
-
- seq_printf(seq, " RSI\t: %016lx\n", regs->si);
- seq_printf(seq, " RDI\t: %016lx\n", regs->di);
- seq_printf(seq, " RBP\t: %016lx\n", regs->bp);
- seq_printf(seq, " ESP\t: %016lx\n", regs->sp);
-
-#ifdef CONFIG_X86_64
- seq_printf(seq, " R08\t: %016lx\n", regs->r8);
- seq_printf(seq, " R09\t: %016lx\n", regs->r9);
- seq_printf(seq, " R10\t: %016lx\n", regs->r10);
- seq_printf(seq, " R11\t: %016lx\n", regs->r11);
- seq_printf(seq, " R12\t: %016lx\n", regs->r12);
- seq_printf(seq, " R13\t: %016lx\n", regs->r13);
- seq_printf(seq, " R14\t: %016lx\n", regs->r14);
- seq_printf(seq, " R15\t: %016lx\n", regs->r15);
-#endif
-
- asm("movl %%cs,%0" : "=r" (seg));
- seq_printf(seq, " CS\t: %04x\n", seg);
- asm("movl %%ds,%0" : "=r" (seg));
- seq_printf(seq, " DS\t: %04x\n", seg);
- seq_printf(seq, " SS\t: %04lx\n", regs->ss & 0xffff);
- asm("movl %%es,%0" : "=r" (seg));
- seq_printf(seq, " ES\t: %04x\n", seg);
- asm("movl %%fs,%0" : "=r" (seg));
- seq_printf(seq, " FS\t: %04x\n", seg);
- asm("movl %%gs,%0" : "=r" (seg));
- seq_printf(seq, " GS\t: %04x\n", seg);
-
- seq_printf(seq, " EFLAGS\t: %016lx\n", regs->flags);
-
- seq_printf(seq, " EIP\t: %016lx\n", regs->ip);
-}
-
-static void print_cr(void *arg)
-{
- struct seq_file *seq = arg;
-
- seq_printf(seq, " cr0\t: %016lx\n", read_cr0());
- seq_printf(seq, " cr2\t: %016lx\n", read_cr2());
- seq_printf(seq, " cr3\t: %016lx\n", read_cr3());
- seq_printf(seq, " cr4\t: %016lx\n", read_cr4_safe());
-#ifdef CONFIG_X86_64
- seq_printf(seq, " cr8\t: %016lx\n", read_cr8());
-#endif
-}
-
-static void print_desc_ptr(char *str, struct seq_file *seq, struct desc_ptr dt)
-{
- seq_printf(seq, " %s\t: %016llx\n", str, (u64)(dt.address | dt.size));
-}
-
-static void print_dt(void *seq)
-{
- struct desc_ptr dt;
- unsigned long ldt;
-
- /* IDT */
- store_idt((struct desc_ptr *)&dt);
- print_desc_ptr("IDT", seq, dt);
-
- /* GDT */
- store_gdt((struct desc_ptr *)&dt);
- print_desc_ptr("GDT", seq, dt);
-
- /* LDT */
- store_ldt(ldt);
- seq_printf(seq, " LDT\t: %016lx\n", ldt);
-
- /* TR */
- store_tr(ldt);
- seq_printf(seq, " TR\t: %016lx\n", ldt);
-}
-
-static void print_dr(void *arg)
-{
- struct seq_file *seq = arg;
- unsigned long dr;
- int i;
-
- for (i = 0; i < 8; i++) {
- /* Ignore db4, db5 */
- if ((i == 4) || (i == 5))
- continue;
- get_debugreg(dr, i);
- seq_printf(seq, " dr%d\t: %016lx\n", i, dr);
- }
-
- seq_printf(seq, "\n MSR\t:\n");
-}
-
-static void print_apic(void *arg)
-{
- struct seq_file *seq = arg;
-
-#ifdef CONFIG_X86_LOCAL_APIC
- seq_printf(seq, " LAPIC\t:\n");
- seq_printf(seq, " ID\t\t: %08x\n", apic_read(APIC_ID) >> 24);
- seq_printf(seq, " LVR\t\t: %08x\n", apic_read(APIC_LVR));
- seq_printf(seq, " TASKPRI\t: %08x\n", apic_read(APIC_TASKPRI));
- seq_printf(seq, " ARBPRI\t\t: %08x\n", apic_read(APIC_ARBPRI));
- seq_printf(seq, " PROCPRI\t: %08x\n", apic_read(APIC_PROCPRI));
- seq_printf(seq, " LDR\t\t: %08x\n", apic_read(APIC_LDR));
- seq_printf(seq, " DFR\t\t: %08x\n", apic_read(APIC_DFR));
- seq_printf(seq, " SPIV\t\t: %08x\n", apic_read(APIC_SPIV));
- seq_printf(seq, " ISR\t\t: %08x\n", apic_read(APIC_ISR));
- seq_printf(seq, " ESR\t\t: %08x\n", apic_read(APIC_ESR));
- seq_printf(seq, " ICR\t\t: %08x\n", apic_read(APIC_ICR));
- seq_printf(seq, " ICR2\t\t: %08x\n", apic_read(APIC_ICR2));
- seq_printf(seq, " LVTT\t\t: %08x\n", apic_read(APIC_LVTT));
- seq_printf(seq, " LVTTHMR\t: %08x\n", apic_read(APIC_LVTTHMR));
- seq_printf(seq, " LVTPC\t\t: %08x\n", apic_read(APIC_LVTPC));
- seq_printf(seq, " LVT0\t\t: %08x\n", apic_read(APIC_LVT0));
- seq_printf(seq, " LVT1\t\t: %08x\n", apic_read(APIC_LVT1));
- seq_printf(seq, " LVTERR\t\t: %08x\n", apic_read(APIC_LVTERR));
- seq_printf(seq, " TMICT\t\t: %08x\n", apic_read(APIC_TMICT));
- seq_printf(seq, " TMCCT\t\t: %08x\n", apic_read(APIC_TMCCT));
- seq_printf(seq, " TDCR\t\t: %08x\n", apic_read(APIC_TDCR));
- if (boot_cpu_has(X86_FEATURE_EXTAPIC)) {
- unsigned int i, v, maxeilvt;
-
- v = apic_read(APIC_EFEAT);
- maxeilvt = (v >> 16) & 0xff;
- seq_printf(seq, " EFEAT\t\t: %08x\n", v);
- seq_printf(seq, " ECTRL\t\t: %08x\n", apic_read(APIC_ECTRL));
-
- for (i = 0; i < maxeilvt; i++) {
- v = apic_read(APIC_EILVTn(i));
- seq_printf(seq, " EILVT%d\t\t: %08x\n", i, v);
- }
- }
-#endif /* CONFIG_X86_LOCAL_APIC */
- seq_printf(seq, "\n MSR\t:\n");
-}
-
-static int cpu_seq_show(struct seq_file *seq, void *v)
-{
- struct cpu_private *priv = seq->private;
-
- if (priv == NULL)
- return -EINVAL;
-
- switch (cpu_base[priv->type].flag) {
- case CPU_TSS:
- smp_call_function_single(priv->cpu, print_tss, seq, 1);
- break;
- case CPU_CR:
- smp_call_function_single(priv->cpu, print_cr, seq, 1);
- break;
- case CPU_DT:
- smp_call_function_single(priv->cpu, print_dt, seq, 1);
- break;
- case CPU_DEBUG:
- if (priv->file == CPU_INDEX_BIT)
- smp_call_function_single(priv->cpu, print_dr, seq, 1);
- print_msr(seq, priv->cpu, cpu_base[priv->type].flag);
- break;
- case CPU_APIC:
- if (priv->file == CPU_INDEX_BIT)
- smp_call_function_single(priv->cpu, print_apic, seq, 1);
- print_msr(seq, priv->cpu, cpu_base[priv->type].flag);
- break;
-
- default:
- print_msr(seq, priv->cpu, cpu_base[priv->type].flag);
- break;
- }
- seq_printf(seq, "\n");
-
- return 0;
-}
-
-static void *cpu_seq_start(struct seq_file *seq, loff_t *pos)
-{
- if (*pos == 0) /* One time is enough ;-) */
- return seq;
-
- return NULL;
-}
-
-static void *cpu_seq_next(struct seq_file *seq, void *v, loff_t *pos)
-{
- (*pos)++;
-
- return cpu_seq_start(seq, pos);
-}
-
-static void cpu_seq_stop(struct seq_file *seq, void *v)
-{
-}
-
-static const struct seq_operations cpu_seq_ops = {
- .start = cpu_seq_start,
- .next = cpu_seq_next,
- .stop = cpu_seq_stop,
- .show = cpu_seq_show,
-};
-
-static int cpu_seq_open(struct inode *inode, struct file *file)
-{
- struct cpu_private *priv = inode->i_private;
- struct seq_file *seq;
- int err;
-
- err = seq_open(file, &cpu_seq_ops);
- if (!err) {
- seq = file->private_data;
- seq->private = priv;
- }
-
- return err;
-}
-
-static int write_msr(struct cpu_private *priv, u64 val)
-{
- u32 low, high;
-
- high = (val >> 32) & 0xffffffff;
- low = val & 0xffffffff;
-
- if (!wrmsr_safe_on_cpu(priv->cpu, priv->reg, low, high))
- return 0;
-
- return -EPERM;
-}
-
-static int write_cpu_register(struct cpu_private *priv, const char *buf)
-{
- int ret = -EPERM;
- u64 val;
-
- ret = strict_strtoull(buf, 0, &val);
- if (ret < 0)
- return ret;
-
- /* Supporting only MSRs */
- if (priv->type < CPU_TSS_BIT)
- return write_msr(priv, val);
-
- return ret;
-}
-
-static ssize_t cpu_write(struct file *file, const char __user *ubuf,
- size_t count, loff_t *off)
-{
- struct seq_file *seq = file->private_data;
- struct cpu_private *priv = seq->private;
- char buf[19];
-
- if ((priv == NULL) || (count >= sizeof(buf)))
- return -EINVAL;
-
- if (copy_from_user(&buf, ubuf, count))
- return -EFAULT;
-
- buf[count] = 0;
-
- if ((cpu_base[priv->type].write) && (cpu_file[priv->file].write))
- if (!write_cpu_register(priv, buf))
- return count;
-
- return -EACCES;
-}
-
-static const struct file_operations cpu_fops = {
- .owner = THIS_MODULE,
- .open = cpu_seq_open,
- .read = seq_read,
- .write = cpu_write,
- .llseek = seq_lseek,
- .release = seq_release,
-};
-
-static int cpu_create_file(unsigned cpu, unsigned type, unsigned reg,
- unsigned file, struct dentry *dentry)
-{
- struct cpu_private *priv = NULL;
-
- /* Already intialized */
- if (file == CPU_INDEX_BIT)
- if (per_cpu(cpud_arr[type].init, cpu))
- return 0;
-
- priv = kzalloc(sizeof(*priv), GFP_KERNEL);
- if (priv == NULL)
- return -ENOMEM;
-
- priv->cpu = cpu;
- priv->type = type;
- priv->reg = reg;
- priv->file = file;
- mutex_lock(&cpu_debug_lock);
- per_cpu(cpud_priv_arr[type], cpu) = priv;
- per_cpu(cpud_priv_count, cpu)++;
- mutex_unlock(&cpu_debug_lock);
-
- if (file)
- debugfs_create_file(cpu_file[file].name, S_IRUGO,
- dentry, (void *)priv, &cpu_fops);
- else {
- debugfs_create_file(cpu_base[type].name, S_IRUGO,
- per_cpu(cpud_arr[type].dentry, cpu),
- (void *)priv, &cpu_fops);
- mutex_lock(&cpu_debug_lock);
- per_cpu(cpud_arr[type].init, cpu) = 1;
- mutex_unlock(&cpu_debug_lock);
- }
-
- return 0;
-}
-
-static int cpu_init_regfiles(unsigned cpu, unsigned int type, unsigned reg,
- struct dentry *dentry)
-{
- unsigned file;
- int err = 0;
-
- for (file = 0; file < ARRAY_SIZE(cpu_file); file++) {
- err = cpu_create_file(cpu, type, reg, file, dentry);
- if (err)
- return err;
- }
-
- return err;
-}
-
-static int cpu_init_msr(unsigned cpu, unsigned type, struct dentry *dentry)
-{
- struct dentry *cpu_dentry = NULL;
- unsigned reg, reg_min, reg_max;
- int i, err = 0;
- char reg_dir[12];
- u32 low, high;
-
- for (i = 0; i < ARRAY_SIZE(cpu_reg_range); i++) {
- if (!get_cpu_range(cpu, &reg_min, &reg_max, i,
- cpu_base[type].flag))
- continue;
-
- for (reg = reg_min; reg <= reg_max; reg++) {
- if (rdmsr_safe_on_cpu(cpu, reg, &low, &high))
- continue;
-
- sprintf(reg_dir, "0x%x", reg);
- cpu_dentry = debugfs_create_dir(reg_dir, dentry);
- err = cpu_init_regfiles(cpu, type, reg, cpu_dentry);
- if (err)
- return err;
- }
- }
-
- return err;
-}
-
-static int cpu_init_allreg(unsigned cpu, struct dentry *dentry)
-{
- struct dentry *cpu_dentry = NULL;
- unsigned type;
- int err = 0;
-
- for (type = 0; type < ARRAY_SIZE(cpu_base) - 1; type++) {
- if (!is_typeflag_valid(cpu, cpu_base[type].flag))
- continue;
- cpu_dentry = debugfs_create_dir(cpu_base[type].name, dentry);
- per_cpu(cpud_arr[type].dentry, cpu) = cpu_dentry;
-
- if (type < CPU_TSS_BIT)
- err = cpu_init_msr(cpu, type, cpu_dentry);
- else
- err = cpu_create_file(cpu, type, 0, CPU_INDEX_BIT,
- cpu_dentry);
- if (err)
- return err;
- }
-
- return err;
-}
-
-static int cpu_init_cpu(void)
-{
- struct dentry *cpu_dentry = NULL;
- struct cpuinfo_x86 *cpui;
- char cpu_dir[12];
- unsigned cpu;
- int err = 0;
-
- for (cpu = 0; cpu < nr_cpu_ids; cpu++) {
- cpui = &cpu_data(cpu);
- if (!cpu_has(cpui, X86_FEATURE_MSR))
- continue;
-
- sprintf(cpu_dir, "cpu%d", cpu);
- cpu_dentry = debugfs_create_dir(cpu_dir, cpu_debugfs_dir);
- err = cpu_init_allreg(cpu, cpu_dentry);
-
- pr_info("cpu%d(%d) debug files %d\n",
- cpu, nr_cpu_ids, per_cpu(cpud_priv_count, cpu));
- if (per_cpu(cpud_priv_count, cpu) > MAX_CPU_FILES) {
- pr_err("Register files count %d exceeds limit %d\n",
- per_cpu(cpud_priv_count, cpu), MAX_CPU_FILES);
- per_cpu(cpud_priv_count, cpu) = MAX_CPU_FILES;
- err = -ENFILE;
- }
- if (err)
- return err;
- }
-
- return err;
-}
-
-static int __init cpu_debug_init(void)
-{
- cpu_debugfs_dir = debugfs_create_dir("cpu", arch_debugfs_dir);
-
- return cpu_init_cpu();
-}
-
-static void __exit cpu_debug_exit(void)
-{
- int i, cpu;
-
- if (cpu_debugfs_dir)
- debugfs_remove_recursive(cpu_debugfs_dir);
-
- for (cpu = 0; cpu < nr_cpu_ids; cpu++)
- for (i = 0; i < per_cpu(cpud_priv_count, cpu); i++)
- kfree(per_cpu(cpud_priv_arr[i], cpu));
-}
-
-module_init(cpu_debug_init);
-module_exit(cpu_debug_exit);
-
-MODULE_AUTHOR("Jaswinder Singh Rajput");
-MODULE_DESCRIPTION("CPU Debug module");
-MODULE_LICENSE("GPL");
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index f125e5c551c0..6e44519960c8 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -1356,6 +1356,7 @@ static int __devexit powernowk8_cpu_exit(struct cpufreq_policy *pol)
kfree(data->powernow_table);
kfree(data);
+ per_cpu(powernow_data, pol->cpu) = NULL;
return 0;
}
@@ -1375,7 +1376,7 @@ static unsigned int powernowk8_get(unsigned int cpu)
int err;
if (!data)
- return -EINVAL;
+ return 0;
smp_call_function_single(cpu, query_values_on_cpu, &err, true);
if (err)
diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c
index cb27fd6136c9..83e5e628de73 100644
--- a/arch/x86/kernel/cpuid.c
+++ b/arch/x86/kernel/cpuid.c
@@ -229,7 +229,7 @@ static void __exit cpuid_exit(void)
for_each_online_cpu(cpu)
cpuid_device_destroy(cpu);
class_destroy(cpuid_class);
- unregister_chrdev(CPUID_MAJOR, "cpu/cpuid");
+ __unregister_chrdev(CPUID_MAJOR, 0, NR_CPUS, "cpu/cpuid");
unregister_hotcpu_notifier(&cpuid_class_cpu_notifier);
}
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index ba6e65884603..ad80a1c718c6 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -34,6 +34,8 @@
*/
unsigned long hpet_address;
u8 hpet_blockid; /* OS timer block num */
+u8 hpet_msi_disable;
+
#ifdef CONFIG_PCI_MSI
static unsigned long hpet_num_timers;
#endif
@@ -596,6 +598,9 @@ static void hpet_msi_capability_lookup(unsigned int start_timer)
unsigned int num_timers_used = 0;
int i;
+ if (hpet_msi_disable)
+ return;
+
if (boot_cpu_has(X86_FEATURE_ARAT))
return;
id = hpet_readl(HPET_ID);
@@ -928,6 +933,9 @@ static __init int hpet_late_init(void)
hpet_reserve_platform_timers(hpet_readl(HPET_ID));
hpet_print_config();
+ if (hpet_msi_disable)
+ return 0;
+
if (boot_cpu_has(X86_FEATURE_ARAT))
return 0;
diff --git a/arch/x86/kernel/hw_breakpoint.c b/arch/x86/kernel/hw_breakpoint.c
index ae90b4739435..dca2802c666f 100644
--- a/arch/x86/kernel/hw_breakpoint.c
+++ b/arch/x86/kernel/hw_breakpoint.c
@@ -212,25 +212,6 @@ static int arch_check_va_in_kernelspace(unsigned long va, u8 hbp_len)
return (va >= TASK_SIZE) && ((va + len - 1) >= TASK_SIZE);
}
-/*
- * Store a breakpoint's encoded address, length, and type.
- */
-static int arch_store_info(struct perf_event *bp)
-{
- struct arch_hw_breakpoint *info = counter_arch_bp(bp);
- /*
- * For kernel-addresses, either the address or symbol name can be
- * specified.
- */
- if (info->name)
- info->address = (unsigned long)
- kallsyms_lookup_name(info->name);
- if (info->address)
- return 0;
-
- return -EINVAL;
-}
-
int arch_bp_generic_fields(int x86_len, int x86_type,
int *gen_len, int *gen_type)
{
@@ -362,10 +343,13 @@ int arch_validate_hwbkpt_settings(struct perf_event *bp,
return ret;
}
- ret = arch_store_info(bp);
-
- if (ret < 0)
- return ret;
+ /*
+ * For kernel-addresses, either the address or symbol name can be
+ * specified.
+ */
+ if (info->name)
+ info->address = (unsigned long)
+ kallsyms_lookup_name(info->name);
/*
* Check that the low-order bits of the address are appropriate
* for the alignment implied by len.
diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c
index dd74fe7273b1..bfba6019d762 100644
--- a/arch/x86/kernel/kgdb.c
+++ b/arch/x86/kernel/kgdb.c
@@ -42,6 +42,7 @@
#include <linux/init.h>
#include <linux/smp.h>
#include <linux/nmi.h>
+#include <linux/hw_breakpoint.h>
#include <asm/debugreg.h>
#include <asm/apicdef.h>
@@ -204,40 +205,81 @@ void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *regs)
static struct hw_breakpoint {
unsigned enabled;
- unsigned type;
- unsigned len;
unsigned long addr;
+ int len;
+ int type;
+ struct perf_event **pev;
} breakinfo[4];
static void kgdb_correct_hw_break(void)
{
- unsigned long dr7;
- int correctit = 0;
- int breakbit;
int breakno;
- get_debugreg(dr7, 7);
for (breakno = 0; breakno < 4; breakno++) {
- breakbit = 2 << (breakno << 1);
- if (!(dr7 & breakbit) && breakinfo[breakno].enabled) {
- correctit = 1;
- dr7 |= breakbit;
- dr7 &= ~(0xf0000 << (breakno << 2));
- dr7 |= ((breakinfo[breakno].len << 2) |
- breakinfo[breakno].type) <<
- ((breakno << 2) + 16);
- set_debugreg(breakinfo[breakno].addr, breakno);
-
- } else {
- if ((dr7 & breakbit) && !breakinfo[breakno].enabled) {
- correctit = 1;
- dr7 &= ~breakbit;
- dr7 &= ~(0xf0000 << (breakno << 2));
- }
- }
+ struct perf_event *bp;
+ struct arch_hw_breakpoint *info;
+ int val;
+ int cpu = raw_smp_processor_id();
+ if (!breakinfo[breakno].enabled)
+ continue;
+ bp = *per_cpu_ptr(breakinfo[breakno].pev, cpu);
+ info = counter_arch_bp(bp);
+ if (bp->attr.disabled != 1)
+ continue;
+ bp->attr.bp_addr = breakinfo[breakno].addr;
+ bp->attr.bp_len = breakinfo[breakno].len;
+ bp->attr.bp_type = breakinfo[breakno].type;
+ info->address = breakinfo[breakno].addr;
+ info->len = breakinfo[breakno].len;
+ info->type = breakinfo[breakno].type;
+ val = arch_install_hw_breakpoint(bp);
+ if (!val)
+ bp->attr.disabled = 0;
+ }
+ hw_breakpoint_restore();
+}
+
+static int hw_break_reserve_slot(int breakno)
+{
+ int cpu;
+ int cnt = 0;
+ struct perf_event **pevent;
+
+ for_each_online_cpu(cpu) {
+ cnt++;
+ pevent = per_cpu_ptr(breakinfo[breakno].pev, cpu);
+ if (dbg_reserve_bp_slot(*pevent))
+ goto fail;
+ }
+
+ return 0;
+
+fail:
+ for_each_online_cpu(cpu) {
+ cnt--;
+ if (!cnt)
+ break;
+ pevent = per_cpu_ptr(breakinfo[breakno].pev, cpu);
+ dbg_release_bp_slot(*pevent);
}
- if (correctit)
- set_debugreg(dr7, 7);
+ return -1;
+}
+
+static int hw_break_release_slot(int breakno)
+{
+ struct perf_event **pevent;
+ int cpu;
+
+ for_each_online_cpu(cpu) {
+ pevent = per_cpu_ptr(breakinfo[breakno].pev, cpu);
+ if (dbg_release_bp_slot(*pevent))
+ /*
+ * The debugger is responisble for handing the retry on
+ * remove failure.
+ */
+ return -1;
+ }
+ return 0;
}
static int
@@ -251,6 +293,10 @@ kgdb_remove_hw_break(unsigned long addr, int len, enum kgdb_bptype bptype)
if (i == 4)
return -1;
+ if (hw_break_release_slot(i)) {
+ printk(KERN_ERR "Cannot remove hw breakpoint at %lx\n", addr);
+ return -1;
+ }
breakinfo[i].enabled = 0;
return 0;
@@ -259,15 +305,23 @@ kgdb_remove_hw_break(unsigned long addr, int len, enum kgdb_bptype bptype)
static void kgdb_remove_all_hw_break(void)
{
int i;
+ int cpu = raw_smp_processor_id();
+ struct perf_event *bp;
- for (i = 0; i < 4; i++)
- memset(&breakinfo[i], 0, sizeof(struct hw_breakpoint));
+ for (i = 0; i < 4; i++) {
+ if (!breakinfo[i].enabled)
+ continue;
+ bp = *per_cpu_ptr(breakinfo[i].pev, cpu);
+ if (bp->attr.disabled == 1)
+ continue;
+ arch_uninstall_hw_breakpoint(bp);
+ bp->attr.disabled = 1;
+ }
}
static int
kgdb_set_hw_break(unsigned long addr, int len, enum kgdb_bptype bptype)
{
- unsigned type;
int i;
for (i = 0; i < 4; i++)
@@ -278,27 +332,42 @@ kgdb_set_hw_break(unsigned long addr, int len, enum kgdb_bptype bptype)
switch (bptype) {
case BP_HARDWARE_BREAKPOINT:
- type = 0;
- len = 1;
+ len = 1;
+ breakinfo[i].type = X86_BREAKPOINT_EXECUTE;
break;
case BP_WRITE_WATCHPOINT:
- type = 1;
+ breakinfo[i].type = X86_BREAKPOINT_WRITE;
break;
case BP_ACCESS_WATCHPOINT:
- type = 3;
+ breakinfo[i].type = X86_BREAKPOINT_RW;
break;
default:
return -1;
}
-
- if (len == 1 || len == 2 || len == 4)
- breakinfo[i].len = len - 1;
- else
+ switch (len) {
+ case 1:
+ breakinfo[i].len = X86_BREAKPOINT_LEN_1;
+ break;
+ case 2:
+ breakinfo[i].len = X86_BREAKPOINT_LEN_2;
+ break;
+ case 4:
+ breakinfo[i].len = X86_BREAKPOINT_LEN_4;
+ break;
+#ifdef CONFIG_X86_64
+ case 8:
+ breakinfo[i].len = X86_BREAKPOINT_LEN_8;
+ break;
+#endif
+ default:
return -1;
-
- breakinfo[i].enabled = 1;
+ }
breakinfo[i].addr = addr;
- breakinfo[i].type = type;
+ if (hw_break_reserve_slot(i)) {
+ breakinfo[i].addr = 0;
+ return -1;
+ }
+ breakinfo[i].enabled = 1;
return 0;
}
@@ -313,8 +382,21 @@ kgdb_set_hw_break(unsigned long addr, int len, enum kgdb_bptype bptype)
*/
void kgdb_disable_hw_debug(struct pt_regs *regs)
{
+ int i;
+ int cpu = raw_smp_processor_id();
+ struct perf_event *bp;
+
/* Disable hardware debugging while we are in kgdb: */
set_debugreg(0UL, 7);
+ for (i = 0; i < 4; i++) {
+ if (!breakinfo[i].enabled)
+ continue;
+ bp = *per_cpu_ptr(breakinfo[i].pev, cpu);
+ if (bp->attr.disabled == 1)
+ continue;
+ arch_uninstall_hw_breakpoint(bp);
+ bp->attr.disabled = 1;
+ }
}
/**
@@ -378,7 +460,6 @@ int kgdb_arch_handle_exception(int e_vector, int signo, int err_code,
struct pt_regs *linux_regs)
{
unsigned long addr;
- unsigned long dr6;
char *ptr;
int newPC;
@@ -404,20 +485,6 @@ int kgdb_arch_handle_exception(int e_vector, int signo, int err_code,
raw_smp_processor_id());
}
- get_debugreg(dr6, 6);
- if (!(dr6 & 0x4000)) {
- int breakno;
-
- for (breakno = 0; breakno < 4; breakno++) {
- if (dr6 & (1 << breakno) &&
- breakinfo[breakno].type == 0) {
- /* Set restore flag: */
- linux_regs->flags |= X86_EFLAGS_RF;
- break;
- }
- }
- }
- set_debugreg(0UL, 6);
kgdb_correct_hw_break();
return 0;
@@ -485,8 +552,7 @@ static int __kgdb_notify(struct die_args *args, unsigned long cmd)
break;
case DIE_DEBUG:
- if (atomic_read(&kgdb_cpu_doing_single_step) ==
- raw_smp_processor_id()) {
+ if (atomic_read(&kgdb_cpu_doing_single_step) != -1) {
if (user_mode(regs))
return single_step_cont(regs, args);
break;
@@ -539,7 +605,42 @@ static struct notifier_block kgdb_notifier = {
*/
int kgdb_arch_init(void)
{
- return register_die_notifier(&kgdb_notifier);
+ int i, cpu;
+ int ret;
+ struct perf_event_attr attr;
+ struct perf_event **pevent;
+
+ ret = register_die_notifier(&kgdb_notifier);
+ if (ret != 0)
+ return ret;
+ /*
+ * Pre-allocate the hw breakpoint structions in the non-atomic
+ * portion of kgdb because this operation requires mutexs to
+ * complete.
+ */
+ attr.bp_addr = (unsigned long)kgdb_arch_init;
+ attr.type = PERF_TYPE_BREAKPOINT;
+ attr.bp_len = HW_BREAKPOINT_LEN_1;
+ attr.bp_type = HW_BREAKPOINT_W;
+ attr.disabled = 1;
+ for (i = 0; i < 4; i++) {
+ breakinfo[i].pev = register_wide_hw_breakpoint(&attr, NULL);
+ if (IS_ERR(breakinfo[i].pev)) {
+ printk(KERN_ERR "kgdb: Could not allocate hw breakpoints\n");
+ breakinfo[i].pev = NULL;
+ kgdb_arch_exit();
+ return -1;
+ }
+ for_each_online_cpu(cpu) {
+ pevent = per_cpu_ptr(breakinfo[i].pev, cpu);
+ pevent[0]->hw.sample_period = 1;
+ if (pevent[0]->destroy != NULL) {
+ pevent[0]->destroy = NULL;
+ release_bp_slot(*pevent);
+ }
+ }
+ }
+ return ret;
}
/**
@@ -550,6 +651,13 @@ int kgdb_arch_init(void)
*/
void kgdb_arch_exit(void)
{
+ int i;
+ for (i = 0; i < 4; i++) {
+ if (breakinfo[i].pev) {
+ unregister_wide_hw_breakpoint(breakinfo[i].pev);
+ breakinfo[i].pev = NULL;
+ }
+ }
unregister_die_notifier(&kgdb_notifier);
}
diff --git a/arch/x86/kernel/microcode_amd.c b/arch/x86/kernel/microcode_amd.c
index 37542b67c57e..e1af7c055c7d 100644
--- a/arch/x86/kernel/microcode_amd.c
+++ b/arch/x86/kernel/microcode_amd.c
@@ -36,9 +36,6 @@ MODULE_LICENSE("GPL v2");
#define UCODE_EQUIV_CPU_TABLE_TYPE 0x00000000
#define UCODE_UCODE_TYPE 0x00000001
-const struct firmware *firmware;
-static int supported_cpu;
-
struct equiv_cpu_entry {
u32 installed_cpu;
u32 fixed_errata_mask;
@@ -77,12 +74,15 @@ static struct equiv_cpu_entry *equiv_cpu_table;
static int collect_cpu_info_amd(int cpu, struct cpu_signature *csig)
{
+ struct cpuinfo_x86 *c = &cpu_data(cpu);
u32 dummy;
- if (!supported_cpu)
- return -1;
-
memset(csig, 0, sizeof(*csig));
+ if (c->x86_vendor != X86_VENDOR_AMD || c->x86 < 0x10) {
+ pr_warning("microcode: CPU%d: AMD CPU family 0x%x not "
+ "supported\n", cpu, c->x86);
+ return -1;
+ }
rdmsr(MSR_AMD64_PATCH_LEVEL, csig->rev, dummy);
pr_info("CPU%d: patch_level=0x%x\n", cpu, csig->rev);
return 0;
@@ -294,10 +294,14 @@ generic_load_microcode(int cpu, const u8 *data, size_t size)
static enum ucode_state request_microcode_fw(int cpu, struct device *device)
{
+ const char *fw_name = "amd-ucode/microcode_amd.bin";
+ const struct firmware *firmware;
enum ucode_state ret;
- if (firmware == NULL)
+ if (request_firmware(&firmware, fw_name, device)) {
+ printk(KERN_ERR "microcode: failed to load file %s\n", fw_name);
return UCODE_NFOUND;
+ }
if (*(u32 *)firmware->data != UCODE_MAGIC) {
pr_err("invalid UCODE_MAGIC (0x%08x)\n",
@@ -307,6 +311,8 @@ static enum ucode_state request_microcode_fw(int cpu, struct device *device)
ret = generic_load_microcode(cpu, firmware->data, firmware->size);
+ release_firmware(firmware);
+
return ret;
}
@@ -325,31 +331,7 @@ static void microcode_fini_cpu_amd(int cpu)
uci->mc = NULL;
}
-void init_microcode_amd(struct device *device)
-{
- const char *fw_name = "amd-ucode/microcode_amd.bin";
- struct cpuinfo_x86 *c = &boot_cpu_data;
-
- WARN_ON(c->x86_vendor != X86_VENDOR_AMD);
-
- if (c->x86 < 0x10) {
- pr_warning("AMD CPU family 0x%x not supported\n", c->x86);
- return;
- }
- supported_cpu = 1;
-
- if (request_firmware(&firmware, fw_name, device))
- pr_err("failed to load file %s\n", fw_name);
-}
-
-void fini_microcode_amd(void)
-{
- release_firmware(firmware);
-}
-
static struct microcode_ops microcode_amd_ops = {
- .init = init_microcode_amd,
- .fini = fini_microcode_amd,
.request_microcode_user = request_microcode_user,
.request_microcode_fw = request_microcode_fw,
.collect_cpu_info = collect_cpu_info_amd,
diff --git a/arch/x86/kernel/microcode_core.c b/arch/x86/kernel/microcode_core.c
index 0c8632433090..cceb5bc3c3c2 100644
--- a/arch/x86/kernel/microcode_core.c
+++ b/arch/x86/kernel/microcode_core.c
@@ -521,9 +521,6 @@ static int __init microcode_init(void)
return PTR_ERR(microcode_pdev);
}
- if (microcode_ops->init)
- microcode_ops->init(&microcode_pdev->dev);
-
get_online_cpus();
mutex_lock(&microcode_mutex);
@@ -566,9 +563,6 @@ static void __exit microcode_exit(void)
platform_device_unregister(microcode_pdev);
- if (microcode_ops->fini)
- microcode_ops->fini();
-
microcode_ops = NULL;
pr_info("Microcode Update Driver: v" MICROCODE_VERSION " removed.\n");
diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c
index 40b54ceb68b5..a2c1edd2d3ac 100644
--- a/arch/x86/kernel/mpparse.c
+++ b/arch/x86/kernel/mpparse.c
@@ -359,13 +359,6 @@ static int __init smp_read_mpc(struct mpc_table *mpc, unsigned early)
x86_init.mpparse.mpc_record(1);
}
-#ifdef CONFIG_X86_BIGSMP
- generic_bigsmp_probe();
-#endif
-
- if (apic->setup_apic_routing)
- apic->setup_apic_routing();
-
if (!num_processors)
printk(KERN_ERR "MPTABLE: no processors registered!\n");
return num_processors;
diff --git a/arch/x86/kernel/msr.c b/arch/x86/kernel/msr.c
index 4bd93c9b2b27..206735ac8cbd 100644
--- a/arch/x86/kernel/msr.c
+++ b/arch/x86/kernel/msr.c
@@ -285,7 +285,7 @@ static void __exit msr_exit(void)
for_each_online_cpu(cpu)
msr_device_destroy(cpu);
class_destroy(msr_class);
- unregister_chrdev(MSR_MAJOR, "cpu/msr");
+ __unregister_chrdev(MSR_MAJOR, 0, NR_CPUS, "cpu/msr");
unregister_hotcpu_notifier(&msr_class_cpu_notifier);
}
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 02c3ee013ccd..c9b3522b6b46 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -115,18 +115,6 @@ void flush_thread(void)
{
struct task_struct *tsk = current;
-#ifdef CONFIG_X86_64
- if (test_tsk_thread_flag(tsk, TIF_ABI_PENDING)) {
- clear_tsk_thread_flag(tsk, TIF_ABI_PENDING);
- if (test_tsk_thread_flag(tsk, TIF_IA32)) {
- clear_tsk_thread_flag(tsk, TIF_IA32);
- } else {
- set_tsk_thread_flag(tsk, TIF_IA32);
- current_thread_info()->status |= TS_COMPAT;
- }
- }
-#endif
-
flush_ptrace_hw_breakpoint(tsk);
memset(tsk->thread.tls_array, 0, sizeof(tsk->thread.tls_array));
/*
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index f9e033150cdf..126f0b493d04 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -521,6 +521,18 @@ void set_personality_64bit(void)
current->personality &= ~READ_IMPLIES_EXEC;
}
+void set_personality_ia32(void)
+{
+ /* inherit personality from parent */
+
+ /* Make sure to be in 32bit mode */
+ set_thread_flag(TIF_IA32);
+ current->personality |= force_personality32;
+
+ /* Prepare the first "return" to user space */
+ current_thread_info()->status |= TS_COMPAT;
+}
+
unsigned long get_wchan(struct task_struct *p)
{
unsigned long stack;
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 73554a3aae8c..d03146f71b2f 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -678,7 +678,7 @@ static unsigned long ptrace_get_debugreg(struct task_struct *tsk, int n)
} else if (n == 6) {
val = thread->debugreg6;
} else if (n == 7) {
- val = ptrace_get_dr7(thread->ptrace_bps);
+ val = thread->ptrace_dr7;
}
return val;
}
@@ -754,8 +754,11 @@ int ptrace_set_debugreg(struct task_struct *tsk, int n, unsigned long val)
return rc;
}
/* All that's left is DR7 */
- if (n == 7)
+ if (n == 7) {
rc = ptrace_write_dr7(tsk, val);
+ if (!rc)
+ thread->ptrace_dr7 = val;
+ }
ret_path:
return rc;
diff --git a/arch/x86/kernel/quirks.c b/arch/x86/kernel/quirks.c
index 18093d7498f0..12e9feaa2f7a 100644
--- a/arch/x86/kernel/quirks.c
+++ b/arch/x86/kernel/quirks.c
@@ -491,6 +491,19 @@ void force_hpet_resume(void)
break;
}
}
+
+/*
+ * HPET MSI on some boards (ATI SB700/SB800) has side effect on
+ * floppy DMA. Disable HPET MSI on such platforms.
+ */
+static void force_disable_hpet_msi(struct pci_dev *unused)
+{
+ hpet_msi_disable = 1;
+}
+
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS,
+ force_disable_hpet_msi);
+
#endif
#if defined(CONFIG_PCI) && defined(CONFIG_NUMA)
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index 1545bc0c9845..704bddcdf64d 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -203,6 +203,15 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = {
DMI_MATCH(DMI_BOARD_NAME, "0T656F"),
},
},
+ { /* Handle problems with rebooting on Dell OptiPlex 760 with 0G919G*/
+ .callback = set_bios_reboot,
+ .ident = "Dell OptiPlex 760",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 760"),
+ DMI_MATCH(DMI_BOARD_NAME, "0G919G"),
+ },
+ },
{ /* Handle problems with rebooting on Dell 2400's */
.callback = set_bios_reboot,
.ident = "Dell PowerEdge 2400",
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index f7b8b9894b22..5d9e40c58628 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -642,19 +642,27 @@ static struct dmi_system_id __initdata bad_bios_dmi_table[] = {
DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix/MSC"),
},
},
- {
/*
- * AMI BIOS with low memory corruption was found on Intel DG45ID board.
- * It hase different DMI_BIOS_VENDOR = "Intel Corp.", for now we will
+ * AMI BIOS with low memory corruption was found on Intel DG45ID and
+ * DG45FC boards.
+ * It has a different DMI_BIOS_VENDOR = "Intel Corp.", for now we will
* match only DMI_BOARD_NAME and see if there is more bad products
* with this vendor.
*/
+ {
.callback = dmi_low_memory_corruption,
.ident = "AMI BIOS",
.matches = {
DMI_MATCH(DMI_BOARD_NAME, "DG45ID"),
},
},
+ {
+ .callback = dmi_low_memory_corruption,
+ .ident = "AMI BIOS",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_NAME, "DG45FC"),
+ },
+ },
#endif
{}
};
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 678d0b8c26f3..b4e870cbdc60 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -1083,9 +1083,7 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
set_cpu_sibling_map(0);
enable_IR_x2apic();
-#ifdef CONFIG_X86_64
default_setup_apic_routing();
-#endif
if (smp_sanity_check(max_cpus) < 0) {
printk(KERN_INFO "SMP disabled\n");
diff --git a/arch/x86/kernel/uv_time.c b/arch/x86/kernel/uv_time.c
index 3c84aa001c11..2b75ef638dbc 100644
--- a/arch/x86/kernel/uv_time.c
+++ b/arch/x86/kernel/uv_time.c
@@ -282,10 +282,21 @@ static int uv_rtc_unset_timer(int cpu, int force)
/*
* Read the RTC.
+ *
+ * Starting with HUB rev 2.0, the UV RTC register is replicated across all
+ * cachelines of it's own page. This allows faster simultaneous reads
+ * from a given socket.
*/
static cycle_t uv_read_rtc(struct clocksource *cs)
{
- return (cycle_t)uv_read_local_mmr(UVH_RTC);
+ unsigned long offset;
+
+ if (uv_get_min_hub_revision_id() == 1)
+ offset = 0;
+ else
+ offset = (uv_blade_processor_id() * L1_CACHE_BYTES) % PAGE_SIZE;
+
+ return (cycle_t)uv_read_local_mmr(UVH_RTC | offset);
}
/*
generated by cgit v1.2.3 (git 2.0.4) at 2024-04-27 10:53:20 +0000