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| author | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2010-10-25 16:53:46 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-03-02 09:46:36 -0500 |
| commit | 595b62a8acfb289a5d2fcc70464ba0995b55fdd7 (patch) | |
| tree | 5bfa0b8f080ec60f707658ea671fe680fe840f64 /arch/x86/include | |
| parent | 5f528de0ef9b3e092e276d95930830b847b33dc4 (diff) | |
| download | lwn-595b62a8acfb289a5d2fcc70464ba0995b55fdd7.tar.gz lwn-595b62a8acfb289a5d2fcc70464ba0995b55fdd7.zip | |
x86/pvclock: Zero last_value on resume
commit e7a3481c0246c8e45e79c629efd63b168e91fcda upstream.
If the guest domain has been suspend/resumed or migrated, then the
system clock backing the pvclock clocksource may revert to a smaller
value (ie, can be non-monotonic across the migration/save-restore).
Make sure we zero last_value in that case so that the domain
continues to see clock updates.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/pvclock.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/pvclock.h b/arch/x86/include/asm/pvclock.h index 53235fd5f8ce..daaacab89143 100644 --- a/arch/x86/include/asm/pvclock.h +++ b/arch/x86/include/asm/pvclock.h @@ -10,5 +10,6 @@ unsigned long pvclock_tsc_khz(struct pvclock_vcpu_time_info *src); void pvclock_read_wallclock(struct pvclock_wall_clock *wall, struct pvclock_vcpu_time_info *vcpu, struct timespec *ts); +void pvclock_resume(void); #endif /* _ASM_X86_PVCLOCK_H */ |