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Message-Id: <1230238726-17506-4-git-send-email-avi@redhat.com> Date: Thu, 25 Dec 2008 22:58:46 +0200 From: Avi Kivity <avi@...hat.com> To: Ingo Molnar <mingo@...e.hu> Cc: "H. Peter Anvin" <hpa@...or.com>, kvm@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH 3/3] x86: Switch critical exceptions and NMI to irqstack With the special exception stacks gone, the irqstack is a much safer place than the regular task stacks. Signed-off-by: Avi Kivity <avi@...hat.com> --- arch/x86/kernel/entry_64.S | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S index 245fecd..8f40593 100644 --- a/arch/x86/kernel/entry_64.S +++ b/arch/x86/kernel/entry_64.S @@ -917,7 +917,10 @@ END(spurious_interrupt) movq %rsp,%rdi movq ORIG_RAX(%rsp),%rsi movq $-1,ORIG_RAX(%rsp) + mov %rsp, %rbp + enter_irqstack %rax call \sym + mov %rbp, %rsp DISABLE_INTERRUPTS(CLBR_NONE) .if \irqtrace TRACE_IRQS_OFF -- 1.6.0.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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