From: Gleb Natapov <gleb@redhat.com>
To: Avi Kivity <avi@redhat.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>,
Jan Kiszka <jan.kiszka@web.de>,
qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Re: [PATCH 0/8] kvm: Fixes, cleanups and live migration
Date: Sun, 3 May 2009 10:56:46 +0300 [thread overview]
Message-ID: <20090503075646.GJ9795@redhat.com> (raw)
In-Reply-To: <49FD4CB4.3070008@redhat.com>
On Sun, May 03, 2009 at 10:50:12AM +0300, Avi Kivity wrote:
> Gleb Natapov wrote:
>
>
>
>>> Maybe we should unexecute the software interrupt instruction on Intel
>>> and get the same effect.
>>>
>>>
>> We don't need to unexecute anything. We get exit with RIP pointing to
>> the offending instruction. The right thing on VMX to do is to inject
>> software interrupt with correct instruction length. Processor will do
>> the rest. Remind me please why do we try to find problems where there is
>> none? We will do right thing and fix migration code to do right thing.
>>
>>
>
> I don't want the migration protocol to encode vendor specific
> information. The architectural state is complicated enough, we don't
> want microarchitectural state as well.
Then I don't see how migration can work correctly. How do you expect
migration to work if you don't migrate part of a processor state? Why
not drop non migratable state immediately after exit then? (that is
essentially what happens if we don't migrate it).
--
Gleb.
next prev parent reply other threads:[~2009-05-03 7:56 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-01 21:17 [Qemu-devel] [PATCH 0/8] kvm: Fixes, cleanups and live migration Jan Kiszka
2009-05-01 21:17 ` [Qemu-devel] [PATCH 1/8] kvm: Conditionally apply workaround for KVM slot handling bug Jan Kiszka
2009-05-01 21:17 ` [Qemu-devel] [PATCH 4/8] kvm: Rework dirty bitmap synchronization Jan Kiszka
2009-05-03 10:05 ` [Qemu-devel] " Avi Kivity
2009-05-04 8:52 ` Jan Kiszka
2009-05-01 21:17 ` [Qemu-devel] [PATCH 5/8] kvm: Add missing bits to support live migration Jan Kiszka
2009-05-01 21:17 ` [Qemu-devel] [PATCH 6/8] kvm: Fix framebuffer dirty log sync Jan Kiszka
2009-05-01 21:17 ` [Qemu-devel] [PATCH 3/8] kvm: Fix dirty log temporary buffer size Jan Kiszka
2009-05-01 21:17 ` [Qemu-devel] [PATCH 2/8] kvm: Introduce kvm_set_migration_log Jan Kiszka
2009-05-01 21:17 ` [Qemu-devel] [PATCH 8/8] kvm: Rework VCPU reset Jan Kiszka
2009-05-03 15:58 ` [Qemu-devel] " Avi Kivity
2009-05-04 8:54 ` Jan Kiszka
2009-05-04 9:12 ` Avi Kivity
2009-05-04 9:29 ` Jan Kiszka
2009-05-04 10:01 ` Avi Kivity
2009-05-01 21:17 ` [Qemu-devel] [PATCH 7/8] Introduce reset notifier order Jan Kiszka
2009-05-01 23:52 ` Paul Brook
2009-05-02 0:05 ` [Qemu-devel] " Jan Kiszka
2009-05-02 0:34 ` Paul Brook
2009-05-04 7:45 ` Jan Kiszka
2009-05-01 22:30 ` [Qemu-devel] Re: [PATCH 0/8] kvm: Fixes, cleanups and live migration Anthony Liguori
2009-05-01 22:49 ` Anthony Liguori
2009-05-01 22:49 ` Jan Kiszka
2009-05-01 22:40 ` Anthony Liguori
2009-05-01 22:56 ` Jan Kiszka
2009-05-02 8:07 ` Avi Kivity
2009-05-02 7:40 ` Gleb Natapov
2009-05-02 13:50 ` Anthony Liguori
2009-05-02 17:23 ` Gleb Natapov
2009-05-02 19:12 ` Avi Kivity
2009-05-02 20:07 ` Gleb Natapov
2009-05-02 20:09 ` [Qemu-devel] Re: [PATCH 0/8] kvm: Fixes, cleanups and livemigration Anthony Liguori
2009-05-03 5:25 ` Gleb Natapov
2009-05-03 5:57 ` [Qemu-devel] Re: [PATCH 0/8] kvm: Fixes, cleanups and live migration Avi Kivity
2009-05-03 6:05 ` Gleb Natapov
2009-05-03 7:36 ` Avi Kivity
2009-05-03 7:46 ` Gleb Natapov
2009-05-03 7:50 ` Avi Kivity
2009-05-03 7:56 ` Gleb Natapov [this message]
2009-05-03 8:01 ` Avi Kivity
2009-05-03 8:35 ` Gleb Natapov
2009-05-01 22:49 ` [Qemu-devel] [PATCH 9/8] kvm: Save/restore TSC counter Jan Kiszka
2009-05-01 22:51 ` [Qemu-devel] " Anthony Liguori
2009-05-01 22:58 ` Jan Kiszka
2009-05-01 23:09 ` Jan Kiszka
2009-05-01 23:18 ` Anthony Liguori
2009-05-02 0:08 ` [Qemu-devel] [PATCH 9/8] kvm: x86: Save/restore KVM-specific CPU states Jan Kiszka
2009-05-02 0:20 ` [Qemu-devel] [PATCH 9/8 v2] " Jan Kiszka
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