Re: AMD-Vi: Unable to write to IOMMU perf counter.

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From: Andreas Hartmann <andihartmann-KuiJ5kEpwI6ELgA04lAiVw@public.gmane.org>
To: Suravee Suthikulanit
	<suravee.suthikulpanit-5C7GfCeVMHo@public.gmane.org>,
	linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: Bjorn Helgaas <helgaas-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	iommu
	<iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.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: <56B37292.1000201-5C7GfCeVMHo@public.gmane.org>

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

WARNING: multiple messages have this Message-ID (diff)

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 17:53 UTC|newest]

Thread overview: 8+ 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
     [not found]   ` <56B37292.1000201-5C7GfCeVMHo@public.gmane.org>
2016-02-04 17:53     ` Andreas Hartmann [this message]
2016-02-04 17:53       ` Andreas Hartmann
2016-02-04 18:11       ` Suravee Suthikulanit
2016-02-04 18:11         ` Suravee Suthikulanit

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