From: Marcelo Tosatti <mtosatti@redhat.com>
To: Michael Tokarev <mjt@tls.msk.ru>
Cc: Avi Kivity <avi@redhat.com>,
kvm@vger.kernel.org,
Benjamin Serebrin <benjamin.serebrin@amd.com>
Subject: Re: [patch 0/3] synchronized TSC between vcpu's on SMP guests
Date: Tue, 9 Dec 2008 11:47:44 +0100 [thread overview]
Message-ID: <20081209104744.GA8611@dmt.cnet> (raw)
In-Reply-To: <493E58A0.8080109@msgid.tls.msk.ru>
On Tue, Dec 09, 2008 at 02:38:08PM +0300, Michael Tokarev wrote:
> Marcelo Tosatti wrote:
> > Most Intel hosts are supposed to have their TSC's synchronized. This
> > patchset attempts to fix the sites which overwrite the TSC making them
> > appear unsynchronized to the guest.
>
> By the way, phenoms are also supposed to have synced TSCs, at least
> the host reports TSC syncronization works. But guests still thinks
> TSC is unstable, even on uniprocessor guests using kvm_clock...
On uniprocessor guests? Perhaps, if the guest uses the vmmouse for
example. In such case, is the TSC reported unstable right after boot?
> Is it related to the area you're patching?
>
> Thanks!
>
> /mjt
>
> --
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next prev parent reply other threads:[~2008-12-09 13:50 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-09 1:12 [patch 0/3] synchronized TSC between vcpu's on SMP guests Marcelo Tosatti
2008-12-09 1:12 ` [patch 1/3] QEMU/KVM: x86: separate TSC load from kvm_arch_load_regs Marcelo Tosatti
2008-12-10 10:10 ` Avi Kivity
2008-12-09 1:12 ` [patch 2/3] QEMU/KVM: BIOS: revert TSC zeroing Marcelo Tosatti
2008-12-09 1:12 ` [patch 3/3] KVM: VMX: initialize TSC offset relative to vm creation time Marcelo Tosatti
2008-12-10 10:19 ` Avi Kivity
2008-12-10 16:53 ` Marcelo Tosatti
2008-12-11 17:38 ` Avi Kivity
2008-12-11 19:45 ` Marcelo Tosatti
2008-12-28 9:26 ` Avi Kivity
2008-12-09 11:38 ` [patch 0/3] synchronized TSC between vcpu's on SMP guests Michael Tokarev
2008-12-09 10:47 ` Marcelo Tosatti [this message]
2008-12-09 22:48 ` Michael Tokarev
2008-12-22 23:16 ` David S. Ahern
2008-12-28 9:33 ` Avi Kivity
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