Commit-ID: 444723dccc3c855fe88ea138cdec46f30e707b74 Gitweb: http://git.kernel.org/tip/444723dccc3c855fe88ea138cdec46f30e707b74 Author: Jan Beulich <jbeul...@suse.com> AuthorDate: Thu, 24 Jan 2013 09:27:31 +0000 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Thu, 24 Jan 2013 10:56:32 +0100
x86-64: Fix unwind annotations in recent NMI changes While in one case a plain annotation is necessary, in the other case the stack adjustment can simply be folded into the immediately preceding RESTORE_ALL, thus getting the correct annotation for free. Signed-off-by: Jan Beulich <jbeul...@suse.com> Cc: Steven Rostedt <rost...@goodmis.org> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Alexander van Heukelum <heuke...@mailshack.com> Link: http://lkml.kernel.org/r/51010c9302000078000b9...@nat28.tlf.novell.com Signed-off-by: Ingo Molnar <mi...@kernel.org> --- arch/x86/kernel/entry_64.S | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S index 07a7a04..cb3c591 100644 --- a/arch/x86/kernel/entry_64.S +++ b/arch/x86/kernel/entry_64.S @@ -1781,6 +1781,7 @@ first_nmi: * Leave room for the "copied" frame */ subq $(5*8), %rsp + CFI_ADJUST_CFA_OFFSET 5*8 /* Copy the stack frame to the Saved frame */ .rept 5 @@ -1863,10 +1864,8 @@ end_repeat_nmi: nmi_swapgs: SWAPGS_UNSAFE_STACK nmi_restore: - RESTORE_ALL 8 - - /* Pop the extra iret frame */ - addq $(5*8), %rsp + /* Pop the extra iret frame at once */ + RESTORE_ALL 6*8 /* Clear the NMI executing stack variable */ movq $0, 5*8(%rsp) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
