linux-kernel - Re: [PATCH 0/4 v2] Implement access checks in iommu page fault paths

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Message-ID: <564CA3C4.60609@virtuousgeek.org>
Date:	Wed, 18 Nov 2015 08:13:56 -0800
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	Joerg Roedel <joro@...tes.org>, iommu@...ts.linux-foundation.org
Cc:	Oded Gabbay <oded.gabbay@...il.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/4 v2] Implement access checks in iommu page fault paths

On 11/17/2015 07:11 AM, Joerg Roedel wrote:
> Hi,
> 
> here is the second version of the patch-set to implement
> proper access checks into the io-page-fault handlers of the
> AMD IOMMU and Intel VT-d drivers.
> 
> Two additional patches clean up the AMD part a bit further.
> Since I can't test this this code myself due to lack of
> hardware or software that utilizes it, I'd appreciate some
> external testing.
> 
> It took me a while to get these out, mostly because I tried
> to setup my own HSA test environment to at least test the
> AMD changes myself. That failed, so I am sending this out
> with another request for testing.
> 
> Oded, Jesse, would you two please test these patches and
> report back? Thanks a lot!

I might be able to find time later this week or next; I have to update
my tree to David's latest bits and rebase my i915 code on top along with
these patches.  Then I can run some of my tests and expand them to try
r/w tests w/o mapping the buffer with the right access mode.

Jesse

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