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[PATCH] x86-64: Annotate interrupt frame backlink in interrupt handlers 

Add correct CFI annotation to the backlink on top of the interrupt stack.

Signed-off-by: Andi Kleen <ak@suse.de>
This commit is contained in:
Andi Kleen 2006-10-05 18:47:22 +02:00 committed by Andi Kleen
parent 0a5ace2ab0
commit 7d0b0e8ddb
1 changed files with 3 additions and 0 deletions
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3
arch/x86_64/kernel/entry.S
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@ -535,6 +535,8 @@ END(stub_rt_sigreturn)
1: incl %gs:pda_irqcount 1: incl %gs:pda_irqcount
cmoveq %gs:pda_irqstackptr,%rsp cmoveq %gs:pda_irqstackptr,%rsp
push %rbp # backlink for old unwinder push %rbp # backlink for old unwinder
CFI_ADJUST_CFA_OFFSET 8
CFI_REL_OFFSET rbp,0
/* /*
* We entered an interrupt context - irqs are off: * We entered an interrupt context - irqs are off:
*/ */
@ -1174,6 +1176,7 @@ ENTRY(call_softirq)
incl %gs:pda_irqcount incl %gs:pda_irqcount
cmove %gs:pda_irqstackptr,%rsp cmove %gs:pda_irqstackptr,%rsp
push %rbp # backlink for old unwinder push %rbp # backlink for old unwinder
CFI_ADJUST_CFA_OFFSET 8
call __do_softirq call __do_softirq
leaveq leaveq
CFI_DEF_CFA_REGISTER rsp CFI_DEF_CFA_REGISTER rsp