From: Avi Kivity <avi@redhat.com>
To: Sheng Yang <sheng@linux.intel.com>
Cc: kvm@vger.kernel.org, "Hao, Xudong" <xudong.hao@intel.com>
Subject: Re: KVM Test report, kernel e6a9246... qemu 94f964d...
Date: Tue, 07 Sep 2010 16:23:29 +0300 [thread overview]
Message-ID: <4C863CD1.7020501@redhat.com> (raw)
In-Reply-To: <4C8630A2.9040706@redhat.com>
On 09/07/2010 03:31 PM, Avi Kivity wrote:
> On 09/07/2010 03:04 PM, Avi Kivity wrote:
>> On 09/07/2010 02:27 PM, Avi Kivity wrote:
>>> On 09/07/2010 11:54 AM, Sheng Yang wrote:
>>>>
>>>> BTW: the bad commit is: c94c3ba901f87115cf574044e7faabfb1d0251fb
>>>> "KVM: Don't
>>>> save/restore MSR_IA32_PERF_STATUS", but I haven't figured out the
>>>> reason yet.
>>>
>>> Confirmed. Strange!
>>>
>>
>> It's incredibly slow. Did we disable the cpu cache somehow? Maybe
>> through the page tables?
>>
>
> PAT = 0.
>
Patch posted - qemu didn't reset PAT correctly, but this worked before
c94c3ba90 since setting MSR_IA32_PERF_STATUS failed (and qemu didn't
check the error code).
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2010-09-07 13:23 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-06 3:05 KVM Test report, kernel e6a9246... qemu 94f964d Hao, Xudong
2010-09-06 6:55 ` Avi Kivity
2010-09-06 6:59 ` Hao, Xudong
2010-09-06 8:04 ` Avi Kivity
2010-09-06 8:08 ` Hao, Xudong
2010-09-06 8:56 ` Avi Kivity
2010-09-07 0:51 ` Hao, Xudong
2010-09-07 7:22 ` Hao, Xudong
2010-09-07 8:15 ` Avi Kivity
2010-09-07 8:54 ` Sheng Yang
2010-09-07 11:27 ` Avi Kivity
2010-09-07 12:04 ` Avi Kivity
2010-09-07 12:31 ` Avi Kivity
2010-09-07 13:23 ` Avi Kivity [this message]
2010-09-08 0:35 ` Sheng Yang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4C863CD1.7020501@redhat.com \
--to=avi@redhat.com \
--cc=kvm@vger.kernel.org \
--cc=sheng@linux.intel.com \
--cc=xudong.hao@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox