From: Gleb Natapov <gleb@redhat.com>
To: "Binh Q. Pham" <binhpham@cs.rutgers.edu>
Cc: kvm@vger.kernel.org
Subject: Re: Performance counters in kvm?
Date: Thu, 14 Nov 2013 23:08:29 +0200 [thread overview]
Message-ID: <20131114210828.GD2088@redhat.com> (raw)
In-Reply-To: <52853305.5030109@cs.rutgers.edu>
On Thu, Nov 14, 2013 at 03:31:01PM -0500, Binh Q. Pham wrote:
> My host kernel version is 3.10.17
>
That one surely has PMU emulation, but your guest does not see it. I blame
QEMU. Can you compile QEMU from git?
> Binh
> On 11/14/2013 12:21 PM, Gleb Natapov wrote:
> >On Thu, Nov 14, 2013 at 12:04:50PM -0500, Binh Q. Pham wrote:
> >>cpuid output is attached.
> >PMU support is not advertised to the guest which means that either
> >QEMU is broken or your host kernel does not have PMU kvm support. What is
> >your host kernel version?
> >
> >>I didn't know that the kernel was not compiled with virtualization
> >>support as I was using a ready image from ubuntu website to install
> >>the VM. In the long run, are you suggesting me to recompile the
> >>kernel for the guest to make sure that it has virtualization
> >>support?
> >>
> >I am surprised ubuntu kernel does not have virtualiztion support
> >compiled in. May be they have separate kernel for that, but I am not
> >ubuntu user so cannot tell.
> >
> >
> >--
> > Gleb.
--
Gleb.
next prev parent reply other threads:[~2013-11-14 21:08 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-13 16:52 Performance counters in kvm? Binh Q. Pham
2013-11-13 17:54 ` Gleb Natapov
2013-11-14 3:22 ` Binh Q. Pham
2013-11-14 7:16 ` Gleb Natapov
2013-11-14 16:17 ` Binh Q. Pham
2013-11-14 16:46 ` Gleb Natapov
2013-11-14 17:04 ` Binh Q. Pham
2013-11-14 17:21 ` Gleb Natapov
2013-11-14 20:31 ` Binh Q. Pham
2013-11-14 21:08 ` Gleb Natapov [this message]
2013-12-09 18:59 ` Binh Q. Pham
2013-12-10 10:59 ` Gleb Natapov
2013-12-10 14:17 ` Binh Q. Pham
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