From: Leonard Norrgard <leonard.norrgard-g2GXA8XeJSExHbG02/KK1g@public.gmane.org>
To: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: [PATCH 0/3] Sync TSC for guest when vcpu has been migrated to another cpu
Date: Fri, 02 Mar 2007 18:41:04 +0200 [thread overview]
Message-ID: <45E853A0.3080207@refactor.fi> (raw)
When a vcpu is migrated to another cpu, an unexpected difference in
current and previous cpu TSC values can cause a guest to wait
indefinitely. A known workaround has been to run kvm with taskset,
locking it to a single cpu. This patch series modifies the guest TSC
offset as needed to guarantee that the guest sees a monotonically
increasing TSC, adds a statistic for vcpu_migrated and updates kvm_stat
so the first column isn't truncated.
[1/3] Sync guest viewable TSC when vcpu migrated
[2/3] Add a vcpu_migrated statistic
[3/3] Widen key column in kvm_stat
-- Leonard
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next reply other threads:[~2007-03-02 16:41 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-02 16:41 Leonard Norrgard [this message]
[not found] ` <45E853A0.3080207-g2GXA8XeJSExHbG02/KK1g@public.gmane.org>
2007-03-02 16:48 ` [PATCH 1/3] Sync guest viewable TSC when vcpu migrated Leonard Norrgard
[not found] ` <45E85566.3010706-g2GXA8XeJSExHbG02/KK1g@public.gmane.org>
2007-03-02 16:55 ` Anthony Liguori
[not found] ` <45E85717.6030906-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2007-03-02 17:13 ` Leonard Norrgard
2007-03-03 8:47 ` Avi Kivity
2007-03-02 16:53 ` [PATCH 2/3] Add a vcpu_migrated statistic Leonard Norrgard
[not found] ` <45E8567C.6080704-g2GXA8XeJSExHbG02/KK1g@public.gmane.org>
2007-03-03 8:58 ` Avi Kivity
2007-03-02 16:55 ` [PATCH 3/3] Widen key column in kvm_stat Leonard Norrgard
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