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Re: [Qemu-devel] [PATCH] linux-user: always start with parallel_cpus set
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From: |
Laurent Vivier |
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Subject: |
Re: [Qemu-devel] [PATCH] linux-user: always start with parallel_cpus set to true |
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Date: |
Wed, 4 Jan 2017 21:22:39 +0100 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1 |
Le 04/01/2017 à 20:35, Richard Henderson a écrit :
> On 12/28/2016 09:37 AM, Laurent Vivier wrote:
>> the use case is
>>
>> mmap(...);
>> fork();
>
> While true, we can notice that mmap contains MAP_SHARED, and trigger it
> then. Similarly for shmat.
Yes, it's a good idea, but is it really expensive to always enable the
parallel_cpus flag?
Laurent