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From: Tejun Heo <tj@kernel.org>
To: Jan Beulich <JBeulich@novell.com>
Cc: Ingo Molnar <mingo@elte.hu>, linux-kernel@vger.kernel.org
Subject: Re: remap allocator for per-CPU memory
Date: Wed, 13 May 2009 00:43:26 +0900	[thread overview]
Message-ID: <4A09991E.9010903@kernel.org> (raw)
In-Reply-To: <4A09B23B02000078000007F1@vpn.id2.novell.com>

Jan Beulich wrote:
> Didn't the addition of this allocator introduce another case that
> needs special treatment in pageattr.c? Since large pages are used
> for mapping the allocated memory, but only part of the initially
> allocated large pages are actually retained, there's now the
> potential for TLB aliases with different cache attributes for those
> parts of these pages that get passed back through free_bootmem().

Hmmm.... yes, the large page mapping and the returned part of it would
alias each other.  What changes should be made for it?  Dunno much
about how pageattr works.

Thanks.

-- 
tejun

  reply	other threads:[~2009-05-12 15:43 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-05-12 15:30 remap allocator for per-CPU memory Jan Beulich
2009-05-12 15:43 ` Tejun Heo [this message]
2009-05-13 10:09   ` Tejun Heo
2009-05-13 11:05     ` Andi Kleen
2009-05-13 11:13       ` Tejun Heo
2009-05-13 11:29         ` Tejun Heo
2009-05-13 11:46           ` Andi Kleen
2009-05-13 12:51           ` Jan Beulich
     [not found]           ` <4A0ADE6A0200007800000BA7@novell.com>
2009-05-13 13:29             ` Tejun Heo
2009-05-13 13:44               ` Jan Beulich
2009-05-13 13:53                 ` Tejun Heo

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