From: Andi Kleen <ak@suse.de>
To: patches@x86-64.org
Cc: Hugh Dickins <hugh@veritas.com>,
Jan Beulich <jbeulich@novell.com>,
linux-kernel@vger.kernel.org
Subject: Re: [patches] Re: [PATCH] x86-64: adjust pmd_bad()
Date: Wed, 15 Nov 2006 18:23:20 +0100 [thread overview]
Message-ID: <200611151823.20520.ak@suse.de> (raw)
In-Reply-To: <Pine.LNX.4.64.0611151658520.24160@blonde.wat.veritas.com>
On Wednesday 15 November 2006 18:01, Hugh Dickins wrote:
> On Wed, 15 Nov 2006, Jan Beulich wrote:
>
> > Make pmd_bad() symmetrical to pgd_bad() and pud_bad(). At once,
> > simplify them all.
>
> Symmetrical and simpler, yes, but you're weakening the pmd_bad() test:
> no longer requires that all those _KERNPG_TABLE bits be set. Wouldn't
> it be better to go the other way and strengthen pgd_bad, pud_bad?
That's a good point. Yes that would be better. If it works :)
They can't be completely the same because we don't set large page bits on
PGDs (on PUDs we will eventually with 1GB pages)
-Andi
prev parent reply other threads:[~2006-11-15 17:23 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-15 15:06 [PATCH] x86-64: adjust pmd_bad() Jan Beulich
2006-11-15 16:31 ` [patches] " Andi Kleen
2006-11-15 17:01 ` Hugh Dickins
2006-11-15 17:12 ` Jan Beulich
2006-11-15 17:23 ` Andi Kleen [this message]
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