linux-kernel - Re: remap allocator for per-CPU memory

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Message-ID: <87vdo5l0u6.fsf@basil.nowhere.org>
Date:	Wed, 13 May 2009 13:05:37 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Tejun Heo <teheo@...ell.com>
Cc:	Jan Beulich <JBeulich@...ell.com>, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org
Subject: Re: remap allocator for per-CPU memory

Tejun Heo <teheo@...ell.com> writes:
>
> Okay, just glanced over the pageattr code.  I don't think we need any
> special provisions for this as long as the TLB is fine with having
> overlapping PMD and PTE mappings with different attributes (please
> note that these two mappings aren't occupying the same linear
> addresses - they're aliases).  This is allowed, right?

Nope.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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