Re: [Qemu-devel] [PATCH 0/4] tcg: fix dirty bitmap race with MTTCG

[Alex Bennée]

Paolo Bonzini <address@hidden> writes:

> 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.

I say there was:

  commit a8efa60633575a2ee4dbf807a71cb44d44b0e0f8
  Author: Paolo Bonzini <address@hidden>
  Date:   Wed Nov 14 12:36:57 2018 +0100

      cpus: run work items for all vCPUs if single-threaded

Was this an effort to fix this problem?

--
Alex Bennée