Avi,
On Fri, Jul 13, 2007 at 09:53:36AM +0300, Avi Kivity wrote:
Stephane Eranian wrote:
Avi,
A couple of months back, we had a discussion about PMU virtualization
and the difficulty I encountered trying to catch the PMU interrupt
vector in kvm on VM-exit. KVM does not set
Avi,
A couple of months back, we had a discussion about PMU virtualization
and the difficulty I encountered trying to catch the PMU interrupt
vector in kvm on VM-exit. KVM does not set ack_intr_on_intr. Would
you mind reminding me of the reason for this?
On the topic of scheduler hooks for use
Eddie,
On Fri, Jul 13, 2007 at 08:46:06AM +0800, Dong, Eddie wrote:
[EMAIL PROTECTED] wrote:
Avi,
A couple of months back, we had a discussion about PMU virtualization
and the difficulty I encountered trying to catch the PMU interrupt
vector in kvm on VM-exit. KVM does not set
Avi,
On Fri, Jun 15, 2007 at 01:49:06PM +0300, Avi Kivity wrote:
Magicboiz wrote:
a little bit better. It Opps'ed again, but this time, my laptop is still
usable:
sudo /usr/local/kvm/bin/qemu -hda /tmp/disco-qemu -m 128 -boot d
-cdrom /tmp/debian-40r0-i386-businesscard.iso -vnc :3
Hello,
Looking at kvm-26, it seems that the CPUID values as seen by the guest OS
are still hardcoded for i386/x86-64 at least.
For performance counter virtualization, the guest needs to see the *actual*
family/model information in order to correctly program the counters.
It would be fairly
Avi,
On Thu, May 31, 2007 at 02:35:44PM +0300, Avi Kivity wrote:
In the case of heterogeneous migration, clearly performance counters
will not work well, especially for unmodified guests.
Right.
But I can also
see problems when migrating from Intel Core to older P4 for
Avi,
On Thu, May 31, 2007 at 02:52:05PM +0300, Avi Kivity wrote:
Stephane Eranian wrote:
If the guest cpuid is set to a least common denominator, it should work.
There is no common denominator between a P4 and Intel Core 2 Duo for the
performance counters. So you cannot simply use
Casey,
On Tue, Apr 03, 2007 at 10:46:38PM -0400, Casey Jeffery wrote:
Stephane,
I'm glad you found this; I thought I was going to have to repost while
actually remembering to change the subject line.
Someone else pointed me to your message. The title was indeed misleading.
On Wed, Mar
Casey,
On Wed, Mar 28, 2007 at 01:02:47PM -0400, Casey Jeffery wrote:
I was messing around with using the perf counters a couple weeks ago
as a way to get deterministic exits in the instruction stream of the
guest. I used the h/w msr save/restore area to disable the counters
and save the
Avi,
On Tue, Mar 27, 2007 at 07:10:58PM +0200, Avi Kivity wrote:
The Performance counters (PMU) cannot be fully virtualized, they need to
run on the actual MSR registers. The PMU interrupt is controlled by the
local APIC. To get overflow-based sampling to work in a guest, we need to
Hi Avi,
Shobha Ranganathan wrote:
I am trying to capture in vmx.c the hardware
performance counter(PMU) interrupt of a i386 Linux
kernel running with perfmon on a Core 2 Duo machine
running with kvm-15. host is running kvm with VT-x in
x86-64 mode.
The PMU interrupt is programmed
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