From mboxrd@z Thu Jan  1 00:00:00 1970
From: Avi Kivity <avi@redhat.com>
Subject: Re: [PATCH  -v2] Monitor command: pfa2hva, translate guest	physical
 address to host virtual address
Date: Wed, 10 Nov 2010 08:59:00 +0200
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Cc: Huang Ying <ying.huang@intel.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>
To: Anthony Liguori <aliguori@linux.vnet.ibm.com>
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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?

-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.