From: Andi Kleen <andi@firstfloor.org>
To: Rik van Riel <riel@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Andi Kleen <ak@linux.intel.com>
Subject: Re: [PATCH] MM: Support more pagesizes for MAP_HUGETLB/SHM_HUGETLB v2
Date: Wed, 13 Jun 2012 22:31:03 +0200 [thread overview]
Message-ID: <20120613203103.GG11413@one.firstfloor.org> (raw)
In-Reply-To: <4FD8F70F.7080405@redhat.com>
On Wed, Jun 13, 2012 at 04:24:47PM -0400, Rik van Riel wrote:
> This would also be useful for emulators such as qemu-kvm,
> which want the guest memory to be 2MB aligned.
hugetlbfs does implicit align, so right now I mash
the two together and use up many of the remaining bits
If you want align different than page sizes you may need
to go 64bits with the flags.
Is there a use case for alignment independent of page sizes?
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
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next prev parent reply other threads:[~2012-06-13 20:31 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-12 23:13 Andi Kleen
2012-06-13 20:24 ` Rik van Riel
2012-06-13 20:31 ` Andi Kleen [this message]
2012-06-13 20:38 ` Rik van Riel
2012-06-15 10:35 ` Michal Hocko
2012-06-16 7:28 ` Kamezawa Hiroyuki
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