diff options
| author | Andrew Morton <akpm@osdl.org> | 2006-10-07 00:28:09 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-07 00:36:52 +0400 |
| commit | d150ad7bd946f066c98a9725685109dcffae0cba (patch) | |
| tree | 8157b0f8690dca44f5644d28f3773afc9badc71b | |
| parent | e630015504cdd4d166c371fec39b8ca258fcbc0e (diff) | |
| download | linux-d150ad7bd946f066c98a9725685109dcffae0cba.tar.xz | |
[PATCH] x86_64 irq_regs fix
smp_apic_timer_interrupt() needs to stack the pt_regs* for profile_tick.
If any other of those APIC interrupt handlers want to run get_irq_regs() then
their C entrypoint handlers will need the same treatment.
Cc: Andi Kleen <ak@muc.de>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Acked-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | arch/x86_64/kernel/apic.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/x86_64/kernel/apic.c b/arch/x86_64/kernel/apic.c index af4a1c71a80d..4d9d5ed942b2 100644 --- a/arch/x86_64/kernel/apic.c +++ b/arch/x86_64/kernel/apic.c @@ -913,8 +913,10 @@ void smp_local_timer_interrupt(void) * [ if a single-CPU system runs an SMP kernel then we call the local * interrupt as well. Thus we cannot inline the local irq ... ] */ -void smp_apic_timer_interrupt(void) +void smp_apic_timer_interrupt(struct pt_regs *regs) { + struct pt_regs *old_regs = set_irq_regs(regs); + /* * the NMI deadlock-detector uses this. */ @@ -934,6 +936,7 @@ void smp_apic_timer_interrupt(void) irq_enter(); smp_local_timer_interrupt(); irq_exit(); + set_irq_regs(old_regs); } /* |