linux-kernel - Re: [PATCH 0/3] xen: Fix oops when mapping/unmapping addr above 1Gb

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Date:	Mon, 31 Mar 2008 07:55:27 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Mark McLoughlin <markmc@...hat.com>, linux-kernel@...r.kernel.org,
	xen-devel@...ts.xensource.com,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH 0/3] xen: Fix oops when mapping/unmapping addr above 1Gb

Ingo Molnar wrote:
> * Mark McLoughlin <markmc@...hat.com> wrote:
>
>   
>>         In Fedora rawhide we're currently seeing oopses whenever a 
>> processes dlopen()s a library which prelink() has previously relocated 
>> above 1Gb. Some more details at:
>>
>>   https://bugzilla.redhat.com/436453
>>
>>         The issue seems to be that during xen_pgd_pin(), we only pin 
>> PTE pages, but xen's release_pmd() tries to unpin PMD pages too.
>>
>>         The following series of patches is against the latest x86 
>> tree.
>>     
>
> thanks, i've picked them up to get them tested - but it would be nice to 
> have an ack from Jeremy as well. This seems like v2.6.25 material as 
> well, right?

Didn't I reply?  Anyway, the patch looks good.  It's definitely 2.6.25 
material; its fallout from the changes I did to dynamically 
allocate/deallocate pmds rather than always do them with the pgd.

    J
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