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From: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
To: Joerg Roedel <joro@8bytes.org>
Cc: <bp@alien8.de>, <peterz@infradead.org>, <mingo@redhat.com>,
	<acme@kernel.org>, <andihartmann@freenet.de>,
	<linux-kernel@vger.kernel.org>,
	<iommu@lists.linux-foundation.org>
Subject: Re: [PATCH V4 0/6] perf/amd/iommu: Enable multi-IOMMU support
Date: Tue, 23 Feb 2016 18:27:42 +0700	[thread overview]
Message-ID: <56CC422E.7050905@amd.com> (raw)
In-Reply-To: <20160223110406.GA22747@8bytes.org>

Hi,

On 02/23/2016 06:04 PM, Joerg Roedel wrote:
> Hi Suravee,
>
> On Thu, Feb 11, 2016 at 04:15:21PM +0700, Suthikulpanit, Suravee wrote:
>> From: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
>>
>> This patch series modifies the existing perf_event_amd_iommu driver
>> to support systems with multiple IOMMUs. It introduces new AMD IOMMU APIs,
>> which are used by the AMD IOMMU Perf driver to access performance
>> counters in multiple IOMMUs.
>>
>> In addition, this series should also fix current AMD IOMMU PMU driver
>> initialization issue in some existing KV and CZ platform, where it fails
>> to write to IOMMU perf counter as reported by Andreas Hartmann here
>> (http://comments.gmane.org/gmane.linux.kernel.pci/49147).
>
> Since that problem also affects older kernels, we need a stand-alone
> fix for this initialization issue. We can't backport new features to fix
> bugs in old kernels.
>
>
> 	Joerg
>

OK, I am spliting V5 into two part. First would be just to fix the 
issue. Then the second part would be to add the multiple IOMMU support.

Suravee

  reply	other threads:[~2016-02-23 11:28 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-11  9:15 [PATCH V4 0/6] perf/amd/iommu: Enable multi-IOMMU support Suravee Suthikulpanit
2016-02-11  9:15 ` [PATCH V4 1/6] perf/amd/iommu: Consolidate and move perf_event_amd_iommu header Suravee Suthikulpanit
2016-02-11  9:15 ` [PATCH V4 2/6] perf/amd/iommu: Modify functions to query max banks and counters Suravee Suthikulpanit
2016-02-18 11:11   ` Borislav Petkov
2016-02-22  4:55     ` Suravee Suthikulpanit
2016-02-11  9:15 ` [PATCH V4 3/6] iommu/amd: Introduce amd_iommu_get_num_iommus() Suravee Suthikulpanit
2016-02-11  9:15 ` [PATCH V4 4/6] perf/amd/iommu: Introduce get_iommu_bnk_cnt_evt_idx Suravee Suthikulpanit
2016-02-18 11:45   ` Borislav Petkov
2016-02-11  9:15 ` [PATCH V4 5/6] perf/amd/iommu: Enable support for multiple IOMMUs Suravee Suthikulpanit
2016-02-18 13:18   ` Peter Zijlstra
2016-02-22  8:00     ` Suravee Suthikulpanit
2016-02-22 14:07       ` Peter Zijlstra
2016-02-23  5:12         ` Suravee Suthikulpanit
2016-02-23  5:24           ` Alex Williamson
2016-02-23  9:56             ` Suravee Suthikulpanit
2016-02-18 13:21   ` Borislav Petkov
2016-02-11  9:15 ` [PATCH V4 6/6] perf/amd/iommu: Clean up print messages pr_debug Suravee Suthikulpanit
2016-02-18 13:22   ` Borislav Petkov
2016-02-18  2:30 ` [PATCH V4 0/6] perf/amd/iommu: Enable multi-IOMMU support Suravee Suthikulpanit
2016-02-23 11:04 ` Joerg Roedel
2016-02-23 11:27   ` Suravee Suthikulpanit [this message]
2016-02-23 11:39     ` Suravee Suthikulpanit
2016-02-23 12:12       ` [PATCH] iommu/amd: Fix boot warning when device 00:00.0 is not iommu Joerg Roedel

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