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Re: [Qemu-devel] [PATCH v3 00/11] Reduce lock contention on TCG hot-path
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From: |
Alex Bennée |
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Subject: |
Re: [Qemu-devel] [PATCH v3 00/11] Reduce lock contention on TCG hot-path |
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Date: |
Thu, 14 Jul 2016 14:13:40 +0100 |
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User-agent: |
mu4e 0.9.17; emacs 25.0.95.9 |
Paolo Bonzini <address@hidden> writes:
> On 14/07/2016 14:02, Alex Bennée wrote:
>> Looking at the perf data it looks like the hotest part of the code now
>> is cpu_get_tb_cpu_state which is required to get the initial hash to
>> search for the next tb.
>
> It should be possible to keep the flags up-to-date in a separate field
> of CPUARMState, similar to what x86 does.
Possibly, there is a tension between lazy and always upto date version
of the flags. But this is work for another day I think ;-)
>
> Paolo
--
Alex Bennée
- [Qemu-devel] [PATCH v3 10/11] tcg: Avoid bouncing tb_lock between tb_gen_code() and tb_add_jump(), (continued)