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| author | Thomas Gleixner <tglx@linutronix.de> | 2019-04-14 17:59:59 +0200 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2019-04-17 15:18:36 +0200 |
| commit | aa641c287b2f7676f6f0064a8351daf08eca6b0a (patch) | |
| tree | 555282f606403a4d3f3c314d0c0924c4824097ea /arch/x86/include | |
| parent | x86/dumpstack/64: Speedup in_exception_stack() (diff) | |
| download | linux-aa641c287b2f7676f6f0064a8351daf08eca6b0a.tar.xz linux-aa641c287b2f7676f6f0064a8351daf08eca6b0a.zip | |
x86/irq/32: Define IRQ_STACK_SIZE
On 32-bit IRQ_STACK_SIZE is the same as THREAD_SIZE.
To allow sharing struct irq_stack with 32-bit, define IRQ_STACK_SIZE for
32-bit and use it for struct irq_stack.
No functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20190414160145.632513987@linutronix.de
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/page_32_types.h | 2 | ||||
| -rw-r--r-- | arch/x86/include/asm/processor.h | 4 |
2 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/include/asm/page_32_types.h b/arch/x86/include/asm/page_32_types.h index 57b5dc15ca7e..565ad755c785 100644 --- a/arch/x86/include/asm/page_32_types.h +++ b/arch/x86/include/asm/page_32_types.h @@ -22,6 +22,8 @@ #define THREAD_SIZE_ORDER 1 #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) +#define IRQ_STACK_SIZE THREAD_SIZE + #define N_EXCEPTION_STACKS 1 #ifdef CONFIG_X86_PAE diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 8fcfcd1a8375..8b4bf732e1b5 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -422,8 +422,8 @@ DECLARE_PER_CPU_ALIGNED(struct stack_canary, stack_canary); * per-CPU IRQ handling stacks */ struct irq_stack { - u32 stack[THREAD_SIZE/sizeof(u32)]; -} __aligned(THREAD_SIZE); + u32 stack[IRQ_STACK_SIZE / sizeof(u32)]; +} __aligned(IRQ_STACK_SIZE); DECLARE_PER_CPU(struct irq_stack *, hardirq_stack); DECLARE_PER_CPU(struct irq_stack *, softirq_stack); |