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[Qemu-devel] Re: [PATCH] RFC: use logging count for individual regions
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From: |
Jan Kiszka |
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Subject: |
[Qemu-devel] Re: [PATCH] RFC: use logging count for individual regions |
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Date: |
Tue, 28 Jul 2009 09:01:18 +0200 |
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User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
Avi Kivity wrote:
> On 07/28/2009 09:50 AM, Jan Kiszka wrote:
>>
>>
>>> Unlike the qemu dirty byte-map, the kvm dirty log can only service one
>>> user. As we have multiple users (vga and migration), we need some way
>>> to fix this impedance mismatch. I think refcounts are the easiest.
>>>
>>
>> This case is already handled upstream. If we had more users, we would
>> need refcounts.
>>
>
> If we turn off logging on migration failure, then we'd introduce a bug
> in vga logging, no?
>
Nope.
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[Qemu-devel] Re: [PATCH] RFC: use logging count for individual regions, Anthony Liguori, 2009/07/27