linux-kernel - Re: [PATCH] i386: fix vmalloc_sync

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Message-ID: <20080619122718.GI7640@elte.hu>
Date:	Thu, 19 Jun 2008 14:27:18 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Jan Beulich <jbeulich@...ell.com>
Cc:	Jeremy Fitzhardinge <jeremy@...p.org>, tglx@...utronix.de,
	linux-kernel@...r.kernel.org, hpa@...or.com
Subject: Re: [PATCH] i386: fix vmalloc_sync_all() for Xen


* Jan Beulich <jbeulich@...ell.com> wrote:

> >Given that the usermode PGDs will never need syncing, I think it would 
> >be better to use KERNEL_PGD_PTRS, and define
> >
> >#define sync_index(a) (((a) >> PMD_SHIFT) - KERNEL_PGD_BOUNDARY)
> >
> >for a massive 192 byte saving in bss.
> 
> I was considering that, too, but didn't do so for simplicity's sake. 
> If I'll have to re-spin the patch, I may as well do it.

you could do it as a second add-on patch as well - or as a respun patch. 
Jeremy, is it now Acked-by you?

	Ingo
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