From: Dor Laor <dlaor@redhat.com>
To: Jun Koi <junkoi2004@gmail.com>
Cc: Sasha Levin <levinsasha928@gmail.com>,
kvm@vger.kernel.org, Eduardo Habkost <ehabkost@redhat.com>
Subject: Re: -cpu core2duo still has no SSE4 support?
Date: Thu, 15 Sep 2011 12:19:14 +0300 [thread overview]
Message-ID: <4E71C312.1020908@redhat.com> (raw)
In-Reply-To: <CA+g7VZ0eLSHcOE1XCJCebW-UxQLqhwKKnSTLTow8-H0oSheVbw@mail.gmail.com>
On 09/15/2011 12:14 PM, Jun Koi wrote:
> On Thu, Sep 15, 2011 at 5:05 PM, Sasha Levin<levinsasha928@gmail.com> wrote:
>> On Thu, 2011-09-15 at 17:04 +0800, Jun Koi wrote:
>>> hi,
>>>
>>> i run kvm with "-cpu core2duo" option, but /proc/cpuinfo only shows
>>> SSE and SSE2.
>>> my host is Core i7, so i suppose that i should have SSE4 with this
>>> option, but it seems not?
>>>
>>> is there any way to get SSE4?
>>
>> How about just running it with '-cpu host'?
>
> hah, that works, thanks!
>
> but then there are 2 problems:
>
> - "-cpu host" should be exposed in the doc. "kvm -cpu ?" reports no
> such option, so i missed it.
> - "-cpu core2duo" should enable SSE4, but it doesnt. a bug?
If this model should have contain it, yes.
According to sysconfigs/target/target-x86_64.conf it shouldn't be in
core2duo but does appear in newer ones.
>
> thanks,
> Jun
> --
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next prev parent reply other threads:[~2011-09-15 9:19 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-15 9:04 -cpu core2duo still has no SSE4 support? Jun Koi
2011-09-15 9:05 ` Sasha Levin
2011-09-15 9:14 ` Jun Koi
2011-09-15 9:19 ` Dor Laor [this message]
2011-09-15 9:27 ` Sasha Levin
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