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Re: [Xen-devel] Re: ATI radeon fails with "iommu=soft swiotlb=force" (se

from [Boris Derzhavets] [Permanent Link][Original]
To: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: Re: [Xen-devel] Re: ATI radeon fails with "iommu=soft swiotlb=force" (seen on RV730/RV740 and RS780/RS800)
From: Boris Derzhavets <bderzhavets@xxxxxxxxx>
Date: Fri, 2 Oct 2009 10:23:59 -0700 (PDT)
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx, JBeulich@xxxxxxxxxx, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Delivery-date: Fri, 02 Oct 2009 10:24:25 -0700
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Jeremy,
Please,  be aware of bugzilla.xensource.com [1519]  the most recent entries :-

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1519

Boris.

--- On Fri, 10/2/09, Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:

From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: Re: [Xen-devel] Re: ATI radeon fails with "iommu=soft swiotlb=force" (seen on RV730/RV740 and RS780/RS800)
To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx, JBeulich@xxxxxxxxxx, "Konrad Rzeszutek Wilk" <konrad.wilk@xxxxxxxxxx>
Date: Friday, October 2, 2009, 1:18 PM

On 10/01/09 23:58, Boris Derzhavets wrote:
> Dmesg report attached:-
>
> [   18.088588] mtrr: type mismatch for d0000000,10000000 old:
> write-back new: write-combining
> [   18.088653] mtrr: type mismatch for d0000000,10000000 old:
> write-back new: write-combining
> [   18.338143] mtrr: type mismatch for d0000000,10000000 old:
> write-back new: write-combining
> [   18.338214] mtrr: type mismatch for d0000000,10000000 old:
> write-back new: write-combining
> [   18.338270] mtrr: type mismatch for d0000000,10000000 old:
> write-back new: write-combining
> [   18.378688] ------------[ cut here ]------------
> [   18.378696] kernel BUG at mm/slab.c:521!
>

OK, I have a fix for this.  I'll commit it shortly.

    J

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