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Re: [Qemu-devel] [PATCH v7 00/16] cpu-exec: Safe work in quiescent state


From: Richard Henderson
Subject: Re: [Qemu-devel] [PATCH v7 00/16] cpu-exec: Safe work in quiescent state
Date: Wed, 14 Sep 2016 10:16:23 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0

On 09/12/2016 04:12 AM, Paolo Bonzini wrote:
> In addition to fixing some of the issues found by Alex, safe work items
> need not run anymore with a mutex taken.  Of course, cpu_exec_start/end
> and start_exclusive/end_exclusive are essentially the read and write
> side of a specialized rwlock, so there is still a lock in disguise looming
> to cause deadlocks; however, it does removes worries about recursive
> locking from CPU list manipulations.
> 
> The new patches are 8, 12 and 13.  Patch 12 of v6 has been split
> across patch 10 and patch 16.
> 
> Paolo
> 
> v6->v7: Do not separate qemu_work_item and SafeWorkItem
>         More cleanups/optimizations of exclusive section logic

What tree is this based on?
The patch set doesn't apply cleanly to master or v2.7.0.


r~



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