linux-kernel - Re: [PATCH] xen: pin correct PGD on suspend

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Date:	Sun, 23 Nov 2008 13:32:41 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	Ian Campbell <Ian.Campbell@...rix.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] xen: pin correct PGD on suspend


* Jeremy Fitzhardinge <jeremy@...p.org> wrote:

> Ian Campbell wrote:
>> commit eefb47f6a1e855653d275cb90592a3587ea93a09 ("xen: use
>> spin_lock_nest_lock when pinning a pagetable") changed xen_pgd_walk to
>> walk over mm->pgd rather than taking pgd as an argument.
>>
>> This breaks xen_mm_(un)pin_all() because it makes init_mm.pgd readonly
>> instead of the pgd we are interested in and therefore the pin subsequently
>> fails.
>>   
>
> Oh, yeah, that was a bit dense.  This is needed for .28.
>
> Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>

applied to tip/x86/urgent, thanks guys!

	Ingo
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