diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-01-28 23:12:55 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-01-28 23:12:55 +0100 |
| commit | 6a385db5ce7f1fd2c68ec511e44587b67dab8fca (patch) | |
| tree | 9324c8ae6f7be54b9fdbd6b60f759292aa727b1f /arch/x86/include/asm/processor.h | |
| parent | 18e352e4a73465349711a9324767e1b2453383e2 (diff) | |
| parent | 4369f1fb7cd4cf777312f43e1cb9aa5504fc4125 (diff) | |
Merge branch 'core/percpu' into x86/core
Conflicts:
kernel/irq/handle.c
Diffstat (limited to 'arch/x86/include/asm/processor.h')
| -rw-r--r-- | arch/x86/include/asm/processor.h | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 091cd8855f2..befa20b4a68 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -378,6 +378,22 @@ union thread_xstate { #ifdef CONFIG_X86_64 DECLARE_PER_CPU(struct orig_ist, orig_ist); + +union irq_stack_union { + char irq_stack[IRQ_STACK_SIZE]; + /* + * GCC hardcodes the stack canary as %gs:40. Since the + * irq_stack is the object at %gs:0, we reserve the bottom + * 48 bytes of the irq stack for the canary. + */ + struct { + char gs_base[40]; + unsigned long stack_canary; + }; +}; + +DECLARE_PER_CPU(union irq_stack_union, irq_stack_union); +DECLARE_PER_CPU(char *, irq_stack_ptr); #endif extern void print_cpu_info(struct cpuinfo_x86 *); @@ -754,7 +770,6 @@ extern struct desc_ptr early_gdt_descr; extern void cpu_set_gdt(int); extern void switch_to_new_gdt(void); extern void cpu_init(void); -extern void init_gdt(int cpu); static inline unsigned long get_debugctlmsr(void) { |