diff options
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/apic_32.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/i386_ksyms_32.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/io_apic_32.c | 12 | ||||
| -rw-r--r-- | arch/x86/kernel/kprobes_64.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/nmi_32.c | 9 | ||||
| -rw-r--r-- | arch/x86/kernel/pci-dma_64.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/traps_32.c | 7 | ||||
| -rw-r--r-- | arch/x86/kernel/traps_64.c | 9 |
8 files changed, 38 insertions, 7 deletions
diff --git a/arch/x86/kernel/apic_32.c b/arch/x86/kernel/apic_32.c index 08b07c176962..96986b46bc85 100644 --- a/arch/x86/kernel/apic_32.c +++ b/arch/x86/kernel/apic_32.c @@ -789,7 +789,7 @@ void __init sync_Arb_IDs(void) * Unsupported on P4 - see Intel Dev. Manual Vol. 3, Ch. 8.6.1 And not * needed on AMD. */ - if (modern_apic()) + if (modern_apic() || boot_cpu_data.x86_vendor == X86_VENDOR_AMD) return; /* * Wait for idle. diff --git a/arch/x86/kernel/i386_ksyms_32.c b/arch/x86/kernel/i386_ksyms_32.c index edd39ccf139e..02112fcc0de7 100644 --- a/arch/x86/kernel/i386_ksyms_32.c +++ b/arch/x86/kernel/i386_ksyms_32.c @@ -2,6 +2,7 @@ #include <asm/semaphore.h> #include <asm/checksum.h> #include <asm/desc.h> +#include <asm/pgtable.h> EXPORT_SYMBOL(__down_failed); EXPORT_SYMBOL(__down_failed_interruptible); @@ -29,3 +30,4 @@ EXPORT_SYMBOL(__read_lock_failed); #endif EXPORT_SYMBOL(csum_partial); +EXPORT_SYMBOL(empty_zero_page); diff --git a/arch/x86/kernel/io_apic_32.c b/arch/x86/kernel/io_apic_32.c index 6bb80ea5f4ee..6cf27319a91c 100644 --- a/arch/x86/kernel/io_apic_32.c +++ b/arch/x86/kernel/io_apic_32.c @@ -2166,6 +2166,10 @@ static inline void __init check_timer(void) { int apic1, pin1, apic2, pin2; int vector; + unsigned int ver; + + ver = apic_read(APIC_LVR); + ver = GET_APIC_VERSION(ver); /* * get/set the timer IRQ vector: @@ -2179,11 +2183,15 @@ static inline void __init check_timer(void) * mode for the 8259A whenever interrupts are routed * through I/O APICs. Also IRQ0 has to be enabled in * the 8259A which implies the virtual wire has to be - * disabled in the local APIC. + * disabled in the local APIC. Finally timer interrupts + * need to be acknowledged manually in the 8259A for + * timer_interrupt() and for the i82489DX when using + * the NMI watchdog. */ apic_write_around(APIC_LVT0, APIC_LVT_MASKED | APIC_DM_EXTINT); init_8259A(1); - timer_ack = 1; + timer_ack = !cpu_has_tsc; + timer_ack |= (nmi_watchdog == NMI_IO_APIC && !APIC_INTEGRATED(ver)); if (timer_over_8254 > 0) enable_8259A_irq(0); diff --git a/arch/x86/kernel/kprobes_64.c b/arch/x86/kernel/kprobes_64.c index 3db3611933d8..0c467644589c 100644 --- a/arch/x86/kernel/kprobes_64.c +++ b/arch/x86/kernel/kprobes_64.c @@ -58,7 +58,7 @@ const int kretprobe_blacklist_size = ARRAY_SIZE(kretprobe_blacklist); /* * returns non-zero if opcode modifies the interrupt flag. */ -static __always_inline int is_IF_modifier(kprobe_opcode_t *insn) +static int __kprobes is_IF_modifier(kprobe_opcode_t *insn) { switch (*insn) { case 0xfa: /* cli */ diff --git a/arch/x86/kernel/nmi_32.c b/arch/x86/kernel/nmi_32.c index 600fd404e440..f5cc47c60b13 100644 --- a/arch/x86/kernel/nmi_32.c +++ b/arch/x86/kernel/nmi_32.c @@ -25,6 +25,7 @@ #include <asm/smp.h> #include <asm/nmi.h> +#include <asm/timer.h> #include "mach_traps.h" @@ -83,7 +84,7 @@ static int __init check_nmi_watchdog(void) prev_nmi_count = kmalloc(NR_CPUS * sizeof(int), GFP_KERNEL); if (!prev_nmi_count) - return -1; + goto error; printk(KERN_INFO "Testing NMI watchdog ... "); @@ -117,7 +118,7 @@ static int __init check_nmi_watchdog(void) if (!atomic_read(&nmi_active)) { kfree(prev_nmi_count); atomic_set(&nmi_active, -1); - return -1; + goto error; } printk("OK.\n"); @@ -128,6 +129,10 @@ static int __init check_nmi_watchdog(void) kfree(prev_nmi_count); return 0; +error: + timer_ack = !cpu_has_tsc; + + return -1; } /* This needs to happen later in boot so counters are working */ late_initcall(check_nmi_watchdog); diff --git a/arch/x86/kernel/pci-dma_64.c b/arch/x86/kernel/pci-dma_64.c index aa805b11b24f..5552d23d23c2 100644 --- a/arch/x86/kernel/pci-dma_64.c +++ b/arch/x86/kernel/pci-dma_64.c @@ -12,7 +12,7 @@ #include <asm/gart.h> #include <asm/calgary.h> -int iommu_merge __read_mostly = 1; +int iommu_merge __read_mostly = 0; EXPORT_SYMBOL(iommu_merge); dma_addr_t bad_dma_address __read_mostly; diff --git a/arch/x86/kernel/traps_32.c b/arch/x86/kernel/traps_32.c index 298d13ed3ab3..ef6010262597 100644 --- a/arch/x86/kernel/traps_32.c +++ b/arch/x86/kernel/traps_32.c @@ -283,6 +283,11 @@ void dump_stack(void) { unsigned long stack; + printk("Pid: %d, comm: %.20s %s %s %.*s\n", + current->pid, current->comm, print_tainted(), + init_utsname()->release, + (int)strcspn(init_utsname()->version, " "), + init_utsname()->version); show_trace(current, NULL, &stack); } @@ -828,6 +833,8 @@ fastcall void __kprobes do_debug(struct pt_regs * regs, long error_code) unsigned int condition; struct task_struct *tsk = current; + trace_hardirqs_fixup(); + get_debugreg(condition, 6); if (notify_die(DIE_DEBUG, "debug", regs, condition, error_code, diff --git a/arch/x86/kernel/traps_64.c b/arch/x86/kernel/traps_64.c index 4a6bd4965f56..d11525ad81b4 100644 --- a/arch/x86/kernel/traps_64.c +++ b/arch/x86/kernel/traps_64.c @@ -31,6 +31,7 @@ #include <linux/uaccess.h> #include <linux/bug.h> #include <linux/kdebug.h> +#include <linux/utsname.h> #if defined(CONFIG_EDAC) #include <linux/edac.h> @@ -400,6 +401,12 @@ void show_stack(struct task_struct *tsk, unsigned long * rsp) void dump_stack(void) { unsigned long dummy; + + printk("Pid: %d, comm: %.20s %s %s %.*s\n", + current->pid, current->comm, print_tainted(), + init_utsname()->release, + (int)strcspn(init_utsname()->version, " "), + init_utsname()->version); show_trace(NULL, NULL, &dummy); } @@ -846,6 +853,8 @@ asmlinkage void __kprobes do_debug(struct pt_regs * regs, struct task_struct *tsk = current; siginfo_t info; + trace_hardirqs_fixup(); + get_debugreg(condition, 6); if (notify_die(DIE_DEBUG, "debug", regs, condition, error_code, |