From: Hollis Blanchard <hollisb@us.ibm.com>
To: Anthony Liguori <aliguori@us.ibm.com>
Cc: Carsten Otte <cotte@de.ibm.com>,
Andrea Arcangeli <andrea@qumranet.com>,
kvm-devel@lists.sourceforge.net, Avi Kivity <avi@qumranet.com>,
Ben-Ami Yassour <benami@il.ibm.com>,
"Zhang, Xiantao" <xiantao.zhang@intel.com>
Subject: Re: [PATCH] Handle vma regions with no backing page (v2)
Date: Wed, 30 Apr 2008 10:11:31 -0500 [thread overview]
Message-ID: <200804301011.31411.hollisb@us.ibm.com> (raw)
In-Reply-To: <4817AB73.20703@us.ibm.com>
On Tuesday 29 April 2008 18:12:51 Anthony Liguori wrote:
> IIUC PPC correctly, all IO pages have corresponding struct pages. This
> means that get_user_pages() would succeed and you can reference count
> them? In this case, we would never take the VM_PFNMAP path.
>
> Is that correct?
I think Andrea's answered this, but for the record: I believe ioremap() will
get you struct pages on PPC, but they don't automatically exist.
--
Hollis Blanchard
IBM Linux Technology Center
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next prev parent reply other threads:[~2008-04-30 15:11 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-29 19:09 [PATCH] Handle vma regions with no backing page (v2) Anthony Liguori
2008-04-29 22:17 ` Avi Kivity
2008-04-29 22:25 ` Anthony Liguori
2008-04-29 22:42 ` Avi Kivity
2008-04-29 22:51 ` Anthony Liguori
2008-04-29 22:52 ` Avi Kivity
2008-04-29 22:57 ` Hollis Blanchard
2008-04-29 23:12 ` Anthony Liguori
2008-04-30 7:00 ` Andrea Arcangeli
2008-04-30 15:37 ` Anthony Liguori
2008-04-30 15:11 ` Hollis Blanchard [this message]
2008-04-30 7:59 ` Carsten Otte
2008-04-30 6:11 ` Muli Ben-Yehuda
2008-04-30 8:59 ` Avi Kivity
2008-04-30 9:13 ` Andrea Arcangeli
2008-04-30 9:15 ` Avi Kivity
2008-04-30 12:24 ` Anthony Liguori
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