linux-kernel - Re: [Xen-devel] [PATCH 2/2] swiotlb-xen: pass dev_addr to swiotlb_tbl_unmap

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Message-ID: <54C64379.7070001@suse.cz>
Date:	Mon, 26 Jan 2015 14:39:05 +0100
From:	Jiri Slaby <jslaby@...e.cz>
To:	Ian Campbell <Ian.Campbell@...rix.com>,
	Stefano Stabellini <stefano.stabellini@...citrix.com>
CC:	xen-devel@...ts.xensource.com, linux-kernel@...r.kernel.org,
	david.vrabel@...rix.com, stable@...r.kernel.org,
	Luis Henriques <luis.henriques@...onical.com>
Subject: Re: [Xen-devel] [PATCH 2/2] swiotlb-xen: pass dev_addr to swiotlb_tbl_unmap_single

On 01/26/2015, 11:53 AM, Ian Campbell wrote:
> On Fri, 2014-11-21 at 17:00 +0000, Stefano Stabellini wrote:
>> Need to pass the pointer within the swiotlb internal buffer to the
>> swiotlb library, that in the case of xen_unmap_single is dev_addr, not
>> paddr.
>>
>> Signed-off-by: Stefano Stabellini <stefano.stabellini@...citrix.com>
>> CC: konrad.wilk@...cle.com
>> CC: stable@...r.kernel.org
> 
> This went into mainline as 2c3fc8d26dd0 "swiotlb-xen: pass dev_addr to
> swiotlb_tbl_unmap_single" but was reverted in dbdd74763f1f.
> 
> However it seems that 2c3fc8d26dd0 has made it into at least some stable
> kernel trees:
>         v3.18.3 as 2129c43d41e9
>         v3.16.7-ckt4 as 94ab279b0c9a
>         v3.14.29 as 3394691d34fc
>         v3.10.65 as 81cb80b578c5
> so it should be reverted there too. This is causing issues in the field
> such as https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=776237.
> 
> v3.17, v3.15, v3.13.11-ckt14, v3.12.x, v3.11.x appear clean, I stopped

Hi, dropped from the 3.12 queue.

thanks,
-- 
js
suse labs
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