From: Samuel Sieb <samuel@sieb.net>
To: Joerg Roedel <jroedel@suse.de>, Bjorn Helgaas <bhelgaas@google.com>
Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
Daniel Drake <drake@endlessm.com>,
Alexander Deucher <Alexander.Deucher@amd.com>,
David Woodhouse <dwmw2@infradead.org>
Subject: Re: [PATCH v2] PCI: Add ATS-disable quirk for AMD Stoney GPUs
Date: Thu, 15 Jun 2017 10:01:53 -0700 [thread overview]
Message-ID: <6dd9dbac-9b65-bc7c-bb08-413a05d09fc8@sieb.net> (raw)
In-Reply-To: <20170615140421.GB25710@suse.de>
On 06/15/2017 07:04 AM, Joerg Roedel wrote:
> Hi Bjorn,
>
> On Fri, Apr 07, 2017 at 04:32:18PM +0200, Joerg Roedel wrote:
>> From: Joerg Roedel <jroedel@suse.de>
>>
>> ATS is broken on this hardware and causes IOMMU stalls and
>> system failure. Disable ATS on these devices to make them
>> usable again with IOMMU enabled.
>>
>> Note that the commit in the Fixes-tag is not buggy, it
>> just uncovers the problem in the hardware by increasing
>> the ATS-flush rate.
>>
>> Fixes: b1516a14657a ('iommu/amd: Implement flush queue')
>> Signed-off-by: Joerg Roedel <jroedel@suse.de>
>> ---
>> drivers/pci/quirks.c | 19 +++++++++++++++++++
>> 1 file changed, 19 insertions(+)
>
> Any more objections on this patch? Please let me know if you want to
> have something changed.
The other patch seems to fix this issue without disabling ATS. Isn't
that better?
next prev parent reply other threads:[~2017-06-15 17:02 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-07 14:32 Joerg Roedel
2017-04-07 16:46 ` Deucher, Alexander
2017-05-04 10:21 ` David Woodhouse
2017-05-04 14:41 ` Deucher, Alexander
2017-05-23 19:54 ` Deucher, Alexander
2017-05-24 8:44 ` Joerg Roedel
2017-05-24 10:38 ` David Woodhouse
2017-05-24 12:56 ` Deucher, Alexander
2017-05-26 6:48 ` Samuel Sieb
2017-05-26 11:57 ` Deucher, Alexander
2017-05-26 12:54 ` David Woodhouse
2017-05-26 15:59 ` Deucher, Alexander
2017-04-08 7:41 ` Lukas Wunner
2017-04-20 12:11 ` Joerg Roedel
2017-06-15 17:12 ` Bjorn Helgaas
2017-06-15 14:04 ` Joerg Roedel
2017-06-15 17:01 ` Samuel Sieb [this message]
2017-06-15 18:13 ` Deucher, Alexander
2017-06-15 19:15 ` Bjorn Helgaas
2017-06-16 16:29 ` Joerg Roedel
2017-07-10 16:53 ` Bjorn Helgaas
2017-07-11 11:49 ` Joerg Roedel
2017-07-11 19:08 ` Deucher, Alexander
2017-07-13 2:56 ` Bjorn Helgaas
2017-08-29 20:02 ` Samuel Sieb
2017-08-29 20:49 ` Bjorn Helgaas
2017-08-30 11:44 ` Joerg Roedel
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