qemu-devel
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] [PATCH] i386: Allow monitor / mwait cpuid override


From: Paolo Bonzini
Subject: Re: [Qemu-devel] [PATCH] i386: Allow monitor / mwait cpuid override
Date: Wed, 28 Feb 2018 12:50:33 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0

On 28/02/2018 00:55, Alexander Graf wrote:
> 
> 
> On 27.02.18 10:52, Gonglei (Arei) wrote:
>> Hi all,
>>
>> Guests could achive good performance in 'Message Passing Workloads' 
>> scenarios when knowing the X86_FEATURE_MWAIT feature which is presented by 
>> qemu. 
>> the reason is that after knowing that feature, 
>> the guest could use mwait method, which saves VMEXIT, 
>> to do idle, and achives high performace in latency-sensitive scenario.
>>
>> Is there any plan for this patch? 
>>
>> Or May I send a updated version based on yours? @Alex?
> 
> Oh, did I drop the ball on this one? If that's the case, sure, go ahead.

Hi, it is probably best to implement this feature based on the
HINT_DEDICATED cpuid bit that Wanpeng Li is adding.

Paolo



reply via email to

[Prev in Thread] Current Thread [Next in Thread]