From: Huang Ying <ying.huang@intel.com>
To: Avi Kivity <avi@redhat.com>
Cc: Anthony Liguori <aliguori@linux.vnet.ibm.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
Anthony Liguori <aliguori@us.ibm.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
Andi Kleen <andi@firstfloor.org>,
Dean Nelson <dnelson@redhat.com>,
Luiz Capitulino <lcapitulino@redhat.com>
Subject: Re: [PATCH -v2] Monitor command: pfa2hva, translate guest physical address to host virtual address
Date: Wed, 10 Nov 2010 15:41:52 +0800 [thread overview]
Message-ID: <1289374912.8719.65.camel@yhuang-dev> (raw)
In-Reply-To: <4CDA42B4.5060201@redhat.com>
On Wed, 2010-11-10 at 14:59 +0800, Avi Kivity wrote:
> On 11/10/2010 08:56 AM, Avi Kivity wrote:
> > On 11/08/2010 05:39 AM, Anthony Liguori wrote:
> >>> Yes. The main usage of the interface is automated testing.
> >>
> >> That's precisely what the command should not be used for.
> >>
> >> You can't assume a gpa -> hva mapping is consistent in an external
> >> application. If you want to implement an interface for testing, you
> >> have to push more of the logic into QEMU to avoid the race.
> >
> > An alternative is to use -mempath. Does poisoning work for tmpfs?
> >
> Or hugetlbfs - I think it does?
The QEMU support for hugetlbfs has some issues now. Because it is hard
for QEMU to deal with 2M poisoned page reported by host OS. Although it
is possible for QEMU to relay 2M poisoned page as MCE to guest OS, the
guest OS may not work properly for this kind of MCE.
Best Regards,
Huang Ying
next prev parent reply other threads:[~2010-11-10 7:41 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-26 2:39 [PATCH -v2] Monitor command: pfa2hva, translate guest physical address to host virtual address Huang Ying
2010-11-01 16:09 ` Marcelo Tosatti
2010-11-01 18:49 ` Anthony Liguori
2010-11-01 19:20 ` Huang Ying
2010-11-01 19:22 ` Anthony Liguori
2010-11-04 16:53 ` Luiz Capitulino
2010-11-06 16:24 ` Avi Kivity
2010-11-08 1:29 ` Huang Ying
2010-11-08 3:39 ` Anthony Liguori
2010-11-08 20:46 ` Huang Ying
2010-11-09 3:06 ` Huang Ying
2010-11-10 6:56 ` Avi Kivity
2010-11-10 6:59 ` Avi Kivity
2010-11-10 7:41 ` Huang Ying [this message]
2010-11-10 8:28 ` Avi Kivity
2010-11-10 8:38 ` Huang Ying
2010-11-10 8:48 ` Avi Kivity
2010-11-10 16:42 ` Andi Kleen
2010-11-10 17:08 ` Avi Kivity
2010-11-10 17:44 ` Andi Kleen
2010-11-10 17:47 ` Avi Kivity
2010-11-10 19:16 ` Andi Kleen
2010-11-10 20:58 ` Avi Kivity
2010-11-10 8:21 ` Huang Ying
2010-11-10 8:34 ` Avi Kivity
2010-11-10 16:49 ` Anthony Liguori
2010-11-11 0:56 ` Huang Ying
2010-11-11 9:39 ` Avi Kivity
2010-11-12 1:16 ` Huang Ying
2010-11-14 11:08 ` Avi Kivity
2010-11-14 11:09 ` Avi Kivity
2010-11-15 1:46 ` Huang Ying
2010-11-15 10:02 ` Andi Kleen
2010-11-08 3:37 ` Anthony Liguori
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