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xen-devel
[Xen-devel] Re: [RFC PATCH 0/4] (Take 2): transcendent memory ("tmem") f
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To: |
Anthony Liguori <anthony@xxxxxxxxxxxxx> |
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Subject: |
[Xen-devel] Re: [RFC PATCH 0/4] (Take 2): transcendent memory ("tmem") for Linux |
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From: |
Avi Kivity <avi@xxxxxxxxxx> |
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Date: |
Sun, 26 Jul 2009 18:00:38 +0300 |
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Cc: |
npiggin@xxxxxxx, akpm@xxxxxxxx, Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, tmem-devel@xxxxxxxxxxxxxx, kurt.hackel@xxxxxxxxxx, Rusty Russell <rusty@xxxxxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, sunil.mushran@xxxxxxxxxx, alan@xxxxxxxxxxxxxxxxxxx, jeremy@xxxxxxxx, Schwidefsky <schwidefsky@xxxxxxxxxx>, dave.mccracken@xxxxxxxxxx, Marcelo Tosatti <mtosatti@xxxxxxxxxx>, Chris Mason <chris.mason@xxxxxxxxxx>, Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx> |
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Sun, 26 Jul 2009 07:56:48 -0700 |
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On 07/14/2009 12:17 AM, Anthony Liguori wrote:
Chris Mason wrote:
On Mon, Jul 13, 2009 at 03:38:45PM -0500, Anthony Liguori wrote:
I'll definitely grant that caching with writethough adds more caching,
but it does need trim support before it is similar to tmem.
I think trim is somewhat orthogonal but even if you do need it, the
nice thing about implementing ATA trim support verses a
paravirtualization is that it works with a wide variety of guests.
From the perspective of the VMM, it seems like a good thing.
trim is also lovely in that images will no longer grow monotonously even
though guest disk usage is constant or is even reduced.
--
error compiling committee.c: too many arguments to function
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