Commit-ID: aa641c287b2f7676f6f0064a8351daf08eca6b0a Gitweb: https://git.kernel.org/tip/aa641c287b2f7676f6f0064a8351daf08eca6b0a Author: Thomas Gleixner <t...@linutronix.de> AuthorDate: Sun, 14 Apr 2019 17:59:59 +0200 Committer: Borislav Petkov <b...@suse.de> CommitDate: Wed, 17 Apr 2019 15:18:36 +0200
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 <t...@linutronix.de> Signed-off-by: Borislav Petkov <b...@suse.de> Cc: Andrew Morton <a...@linux-foundation.org> Cc: Andy Lutomirski <l...@kernel.org> Cc: Dave Hansen <dave.han...@intel.com> Cc: "H. Peter Anvin" <h...@zytor.com> Cc: Ingo Molnar <mi...@redhat.com> Cc: Jiri Kosina <jkos...@suse.cz> Cc: Josh Poimboeuf <jpoim...@redhat.com> Cc: Juergen Gross <jgr...@suse.com> Cc: Michal Hocko <mho...@suse.com> Cc: Nick Desaulniers <ndesaulni...@google.com> Cc: Sean Christopherson <sean.j.christopher...@intel.com> Cc: Suravee Suthikulpanit <suravee.suthikulpa...@amd.com> Cc: Vlastimil Babka <vba...@suse.cz> Cc: x86-ml <x...@kernel.org> Link: https://lkml.kernel.org/r/20190414160145.632513...@linutronix.de --- arch/x86/include/asm/page_32_types.h | 2 ++ 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);
