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Re: [Qemu-devel] [PATCH 0/4] tcg: fix dirty bitmap race with MTTCG
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From: |
Paolo Bonzini |
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Subject: |
Re: [Qemu-devel] [PATCH 0/4] tcg: fix dirty bitmap race with MTTCG |
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Date: |
Tue, 30 Oct 2018 14:48:58 +0100 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.0 |
On 30/10/2018 13:21, Alex Bennée wrote:
>
> Paolo Bonzini <address@hidden> writes:
>
>> This is a race that can happen when migrating TCG guests under load.
>> It was introduced by the change to run vCPUs outside the big QEMU
>> lock.
>
> Did this ever get re-spun?
No, the issue is that *without MTTCG* all work items must come from the
same list, otherwise you get a deadlock. However the cleanup part of
the series was applied.
Paolo