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| author | Zachary Amsden <zach@vmware.com> | 2006-12-07 02:14:09 +0100 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2006-12-07 02:14:09 +0100 |
| commit | 8542b200cbe5609edd7aae0c304c091a1c290452 (patch) | |
| tree | 7b8a51fa34639c0e7a73a12c9cc2360b8c6d2efc /arch/x86_64/Kconfig | |
| parent | 8ecb8950695e907ed25acffec9e98c6806e311c8 (diff) | |
| download | kernel-crypto-8542b200cbe5609edd7aae0c304c091a1c290452.tar.gz kernel-crypto-8542b200cbe5609edd7aae0c304c091a1c290452.tar.xz kernel-crypto-8542b200cbe5609edd7aae0c304c091a1c290452.zip | |
[PATCH] paravirt: Add option to allow skipping the timer check
Add a way to disable the timer IRQ routing check via a boot option. The
VMI timer code uses this to avoid triggering the pester Mingo code, which
probes for some very unusual and broken motherboard routings. It fires
100% of the time when using a paravirtual delay mechanism instead of using
a realtime delay, since there is no elapsed real time, and the 4 timer IRQs
have not yet been delivered.
In addition, it is entirely possible, though improbable, that this bug
could surface on real hardware which picks a particularly bad time to enter
SMM mode, causing a long latency during one of the timer IRQs.
While here, make check_timer be __init.
Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Andi Kleen <ak@suse.de>
[chrisw: use no_timer_check to bring inline with x86_64 as per Andi's request]
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Diffstat (limited to 'arch/x86_64/Kconfig')
0 files changed, 0 insertions, 0 deletions