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(parent: 0f639a3) | patch
x86/pvclock: Zero last_value on resume
authorJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Mon, 25 Oct 2010 23:53:46 +0000 (16:53 -0700)
committerIngo Molnar <mingo@elte.hu>
Sun, 28 Nov 2010 08:33:20 +0000 (09:33 +0100)
commite7a3481c0246c8e45e79c629efd63b168e91fcda
tree34886006eaa53a91e60ce4f82e1d91c916ef345etree | snapshot (tar.gz zip)
parent0f639a3c5ca63dd76ee07de9b02ebf0178ce9a17commit | diff
x86/pvclock: Zero last_value on resume

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>
arch/x86/include/asm/pvclock.h diff | blob | blame | history
arch/x86/kernel/pvclock.c diff | blob | blame | history
arch/x86/xen/time.c diff | blob | blame | history