From: Andreas Hartmann <andihartmann@freenet.de>
To: Suravee Suthikulanit <suravee.suthikulpanit@amd.com>,
linux-pci@vger.kernel.org
Cc: Joerg Roedel <joro@8bytes.org>,
Bjorn Helgaas <helgaas@kernel.org>,
iommu <iommu@lists.linux-foundation.org>
Subject: Re: AMD-Vi: Unable to write to IOMMU perf counter.
Date: Thu, 4 Feb 2016 18:53:13 +0100 [thread overview]
Message-ID: <56B39009.90401@maya.org> (raw)
In-Reply-To: <56B37292.1000201@amd.com>
On 02/04/2016 at 04:47 PM, Suravee Suthikulanit wrote:
> Hi Andreas,
>
> On 2/4/2016 8:53 AM, Andreas Hartmann wrote:
>> Hello!
>>
>> The following happens with Linux 4.4.1 during boot on an MSI A78M-E35
>> board. Additionally, I attached the complete dmesg.
>
> I was working on upstreaming changes to the AMD IOMMU Perf to fix some
> of the similar issue I saw on a different platform. Would you please
> check to see if this patch series would fix this?
>
> https://lkml.org/lkml/2016/1/1/141
This patchset seems to fix the problem.
[ 1.264639] AMD-Vi: IOMMU performance counters supported
But there seems to be a problem with the location of
perf_event_amd_iommu.h in the patch - I had to fix the complete
perf_event_amd_iommu.h related patches to get them applied to 4.4. and
finally compiled.
Thanks,
Andreas
next prev parent reply other threads:[~2016-02-04 18:06 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-04 14:53 AMD-Vi: Unable to write to IOMMU perf counter Andreas Hartmann
2016-02-04 15:23 ` Bjorn Helgaas
2016-02-05 6:37 ` Andreas Hartmann
2016-02-04 15:47 ` Suravee Suthikulanit
2016-02-04 17:53 ` Andreas Hartmann [this message]
2016-02-04 18:11 ` Suravee Suthikulanit
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