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From: Anthony Liguori <anthony@codemonkey.ws>
To: Marcelo Tosatti <mtosatti@redhat.com>
Cc: john cooper <john.cooper@third-harmonic.com>,
	kvm@vger.kernel.org, john.cooper@redhat.com
Subject: Re: patch: qemu + hugetlbfs..
Date: Wed, 09 Jul 2008 12:11:50 -0500	[thread overview]
Message-ID: <4874F156.2010708@codemonkey.ws> (raw)
In-Reply-To: <20080709170301.GA11439@dmt.cnet>

Marcelo Tosatti wrote:
> On Tue, Jul 08, 2008 at 08:08:22PM -0500, Anthony Liguori wrote:
>   
>> john cooper wrote:
>>     
>>> I like it even less.  MAP_POPULATE does not fault in physical
>>> hpages to the map.  Again this was a qemu-side interim bandaid.
>>>       
>> Really?  That would seem like a bug in hugetlbfs to me.
>>     
>
> This is Linux's behaviour for all filesystems. There is no error
> checking on MAP_POPULATE's attempt to prefault pages.
>   

I thought that mmap() will fail with hugetlbfs if enough large pages 
can't be reserved?

Regards,

Anthony Liguori


  reply	other threads:[~2008-07-09 17:12 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-07-08 22:02 patch: qemu + hugetlbfs john cooper
2008-07-08 23:09 ` Anthony Liguori
2008-07-09  0:23   ` john cooper
2008-07-09  1:08     ` Anthony Liguori
2008-07-09 17:03       ` Marcelo Tosatti
2008-07-09 17:11         ` Anthony Liguori [this message]
2008-07-10 16:40           ` john cooper
2008-07-10 17:58             ` Anthony Liguori
2008-07-10 20:16               ` john cooper
2008-07-10 20:47                 ` Anthony Liguori
2008-07-10 21:12                   ` john cooper
2008-07-10 21:38                     ` Anthony Liguori
2008-08-25 23:05                       ` Resend: " john cooper
2008-08-26  8:11                         ` Avi Kivity
2008-08-27  4:13                           ` john cooper
2009-01-16  2:19                         ` john cooper
2009-01-20 10:29                           ` Avi Kivity
2009-01-23 21:21                             ` john cooper
2009-02-05 15:42                               ` Avi Kivity
2009-02-05 16:12                                 ` Marcelo Tosatti
2009-02-05 16:15                                   ` Avi Kivity

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