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| author | Keir Fraser <keir.fraser@citrix.com> | 2009-09-22 08:00:36 +0100 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2009-09-22 08:00:36 +0100 |
| commit | 18d0fed6948ada72aa1c10e3fba365f148a4a252 (patch) | |
| tree | 8cd29b4dcedd04722b2d98fcb31a1772d2ed932e /xen/arch/x86/hvm/vpt.c | |
| parent | 7033f1164710d1065fe278dbef826673af85abbd (diff) | |
| download | xen-18d0fed6948ada72aa1c10e3fba365f148a4a252.tar.gz xen-18d0fed6948ada72aa1c10e3fba365f148a4a252.tar.bz2 xen-18d0fed6948ada72aa1c10e3fba365f148a4a252.zip | |
x86 hvm: fix missing ticks bug of c/s 20218
With c/s 20218, timer ticks might be missed when IRQs of a timer are
queued. "Next scheduled time" is accumulated wrongly.
Thanks to Christoph for the report.
Signed-off-by: Kouya Shimura <kouya@jp.fujitsu.com>
Reported-by: Christoph Egger <Christoph.Egger@amd.com>
Diffstat (limited to 'xen/arch/x86/hvm/vpt.c')
| -rw-r--r-- | xen/arch/x86/hvm/vpt.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/xen/arch/x86/hvm/vpt.c b/xen/arch/x86/hvm/vpt.c index 1a5804a356..5ed1362082 100644 --- a/xen/arch/x86/hvm/vpt.c +++ b/xen/arch/x86/hvm/vpt.c @@ -309,7 +309,6 @@ void pt_intr_post(struct vcpu *v, struct hvm_intack intack) else { pt->scheduled += pt->period; - pt_process_missed_ticks(pt); if ( mode_is(v->domain, one_missed_tick_pending) || mode_is(v->domain, no_missed_ticks_pending) ) @@ -324,7 +323,11 @@ void pt_intr_post(struct vcpu *v, struct hvm_intack intack) } if ( pt->pending_intr_nr == 0 ) + { + pt_process_missed_ticks(pt); + pt->do_not_freeze = 0; set_timer(&pt->timer, pt->scheduled); + } } if ( mode_is(v->domain, delay_for_missed_ticks) && |