Commit-ID: b317219b322e36e25150d7b64f4532401779959d Gitweb: http://git.kernel.org/tip/b317219b322e36e25150d7b64f4532401779959d Author: gmail <lans.zhang2008@xxxxxxxxx> AuthorDate: Fri, 1 Mar 2013 09:20:39 +0800 Committer: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx> CommitDate: Thu, 28 Feb 2013 20:19:50 -0800 x86_64: Use __BOOT_DS instead_of __KERNEL_DS for safety In startup_32, the running code still uses the initial GDT located in setup. Thus, __BOOT_DS is preferred. Currently __KERNEL_DS is lucky to equal to __BOOT_DS, but this is not always a safe way. Signed-off-by: Lans Zhang <lans.zhang2008@xxxxxxxxx> Link: http://lkml.kernel.org/r/51300267.6000008@xxxxxxxxx Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx> --- arch/x86/boot/compressed/head_64.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S index c1d383d..16f24e6 100644 --- a/arch/x86/boot/compressed/head_64.S +++ b/arch/x86/boot/compressed/head_64.S @@ -52,7 +52,7 @@ ENTRY(startup_32) jnz 1f cli - movl $(__KERNEL_DS), %eax + movl $(__BOOT_DS), %eax movl %eax, %ds movl %eax, %es movl %eax, %ss -- 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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