* -cpu core2duo still has no SSE4 support? @ 2011-09-15 9:04 Jun Koi 2011-09-15 9:05 ` Sasha Levin 0 siblings, 1 reply; 5+ messages in thread From: Jun Koi @ 2011-09-15 9:04 UTC (permalink / raw) To: kvm 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? (i am on kvm-0.12.3 on Ubuntu 10.04) thanks, Jun ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: -cpu core2duo still has no SSE4 support? 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 0 siblings, 1 reply; 5+ messages in thread From: Sasha Levin @ 2011-09-15 9:05 UTC (permalink / raw) To: Jun Koi; +Cc: kvm 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'? -- Sasha. ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: -cpu core2duo still has no SSE4 support? 2011-09-15 9:05 ` Sasha Levin @ 2011-09-15 9:14 ` Jun Koi 2011-09-15 9:19 ` Dor Laor 2011-09-15 9:27 ` Sasha Levin 0 siblings, 2 replies; 5+ messages in thread From: Jun Koi @ 2011-09-15 9:14 UTC (permalink / raw) To: Sasha Levin; +Cc: kvm 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? thanks, Jun ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: -cpu core2duo still has no SSE4 support? 2011-09-15 9:14 ` Jun Koi @ 2011-09-15 9:19 ` Dor Laor 2011-09-15 9:27 ` Sasha Levin 1 sibling, 0 replies; 5+ messages in thread From: Dor Laor @ 2011-09-15 9:19 UTC (permalink / raw) To: Jun Koi; +Cc: Sasha Levin, kvm, Eduardo Habkost 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 > -- > To unsubscribe from this list: send the line "unsubscribe kvm" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: -cpu core2duo still has no SSE4 support? 2011-09-15 9:14 ` Jun Koi 2011-09-15 9:19 ` Dor Laor @ 2011-09-15 9:27 ` Sasha Levin 1 sibling, 0 replies; 5+ messages in thread From: Sasha Levin @ 2011-09-15 9:27 UTC (permalink / raw) To: Jun Koi; +Cc: kvm 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. ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2011-09-15 9:27 UTC | newest] Thread overview: 5+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 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 2011-09-15 9:27 ` Sasha Levin
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