Re: -cpu core2duo still has no SSE4 support?

Sasha Levin
2011-09-15T09:27:38Z

On Thu, 2011-09-15 at 17:14 +0800, 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?

SSE4 doesn't come built in with all core2duos. See
http://download.intel.com/design/mobile/datashts/31674505.pdf for
example.

--

Sasha.