Commit-ID: 84f4fc524eed040660bd4ebc8cba259d8afe8461 Gitweb: http://git.kernel.org/tip/84f4fc524eed040660bd4ebc8cba259d8afe8461 Author: H. Peter Anvin <hpa@xxxxxxxxx> AuthorDate: Wed, 18 Apr 2012 17:16:47 -0700 Committer: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx> CommitDate: Thu, 19 Apr 2012 15:07:49 -0700 x86: Add symbolic constant for exceptions with error code Add a symbolic constant for the bitmask which states which exceptions carry an error code. Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxx> Link: http://lkml.kernel.org/r/1334794610-5546-3-git-send-email-hpa@xxxxxxxxx --- arch/x86/include/asm/segment.h | 2 ++ arch/x86/kernel/head_64.S | 2 +- 2 files changed, 3 insertions(+), 1 deletions(-) diff --git a/arch/x86/include/asm/segment.h b/arch/x86/include/asm/segment.h index 1654662..58c1e6c 100644 --- a/arch/x86/include/asm/segment.h +++ b/arch/x86/include/asm/segment.h @@ -205,6 +205,8 @@ #define IDT_ENTRIES 256 #define NUM_EXCEPTION_VECTORS 32 +/* Bitmask of exception vectors which push an error code on the stack */ +#define EXCEPTION_ERRCODE_MASK 0x00027d00 #define GDT_SIZE (GDT_ENTRIES * 8) #define GDT_ENTRY_TLS_ENTRIES 3 #define TLS_SIZE (GDT_ENTRY_TLS_ENTRIES * 8) diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S index 40f4eb3..adf52e8 100644 --- a/arch/x86/kernel/head_64.S +++ b/arch/x86/kernel/head_64.S @@ -295,7 +295,7 @@ ENTRY(early_idt_handler) ja 0f movl $1,%eax salq %cl,%rax - testl $0x27d00,%eax + testl $EXCEPTION_ERRCODE_MASK,%eax je 0f popq %r8 # get error code 0: movq 0(%rsp),%rcx # get ip -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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