From: Joerg Roedel <joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
To: Suravee Suthikulpanit
<Suravee.Suthikulpanit-5C7GfCeVMHo@public.gmane.org>
Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
acme-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
andihartmann-KuiJ5kEpwI6ELgA04lAiVw@public.gmane.org,
mingo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org
Subject: Re: [PATCH V4 0/6] perf/amd/iommu: Enable multi-IOMMU support
Date: Tue, 23 Feb 2016 12:04:06 +0100 [thread overview]
Message-ID: <20160223110406.GA22747@8bytes.org> (raw)
In-Reply-To: <1455182127-17551-1-git-send-email-Suravee.Suthikulpanit-5C7GfCeVMHo@public.gmane.org>
Hi Suravee,
On Thu, Feb 11, 2016 at 04:15:21PM +0700, Suthikulpanit, Suravee wrote:
> From: Suravee Suthikulpanit <suravee.suthikulpanit-5C7GfCeVMHo@public.gmane.org>
>
> 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
next prev parent reply other threads:[~2016-02-23 11:04 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 3/6] iommu/amd: Introduce amd_iommu_get_num_iommus() Suravee Suthikulpanit
[not found] ` <1455182127-17551-1-git-send-email-Suravee.Suthikulpanit-5C7GfCeVMHo@public.gmane.org>
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
[not found] ` <20160218111116.GE3694-fF5Pk5pvG8Y@public.gmane.org>
2016-02-22 4:55 ` Suravee Suthikulpanit
2016-02-11 9:15 ` [PATCH V4 4/6] perf/amd/iommu: Introduce get_iommu_bnk_cnt_evt_idx Suravee Suthikulpanit
[not found] ` <1455182127-17551-5-git-send-email-Suravee.Suthikulpanit-5C7GfCeVMHo@public.gmane.org>
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
[not found] ` <20160218131853.GU6357-ndre7Fmf5hadTX5a5knrm8zTDFooKrT+cvkQGrU6aU0@public.gmane.org>
2016-02-22 8:00 ` Suravee Suthikulpanit
2016-02-22 14:07 ` Peter Zijlstra
[not found] ` <20160222140741.GH6357-ndre7Fmf5hadTX5a5knrm8zTDFooKrT+cvkQGrU6aU0@public.gmane.org>
2016-02-23 5:12 ` Suravee Suthikulpanit
[not found] ` <56CBEA4A.8070001-5C7GfCeVMHo@public.gmane.org>
2016-02-23 5:24 ` Alex Williamson
[not found] ` <20160222222457.2824f7e0-1yVPhWWZRC1BDLzU/O5InQ@public.gmane.org>
2016-02-23 9:56 ` Suravee Suthikulpanit
[not found] ` <1455182127-17551-6-git-send-email-Suravee.Suthikulpanit-5C7GfCeVMHo@public.gmane.org>
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
[not found] ` <1455182127-17551-7-git-send-email-Suravee.Suthikulpanit-5C7GfCeVMHo@public.gmane.org>
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 [this message]
[not found] ` <20160223110406.GA22747-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2016-02-23 11:27 ` Suravee Suthikulpanit
[not found] ` <56CC422E.7050905-5C7GfCeVMHo@public.gmane.org>
2016-02-23 11:39 ` Suravee Suthikulpanit
[not found] ` <56CC44D8.4080604-5C7GfCeVMHo@public.gmane.org>
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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