linux-kernel - [PATCH v7 0/7] perf/amd/iommu: Enable multi-IOMMU support

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Date:   Mon, 9 Jan 2017 21:33:40 -0600
From:   Suravee Suthikulpanit <Suravee.Suthikulpanit@....com>
To:     <linux-kernel@...r.kernel.org>, <iommu@...ts.linux-foundation.org>
CC:     <joro@...tes.org>, <bp@...en8.de>, <peterz@...radead.org>,
        <mingo@...hat.com>,
        Suravee Suthikulpanit <suravee.suthikulpanit@....com>
Subject: [PATCH v7 0/7] perf/amd/iommu: Enable multi-IOMMU support

From: Suravee Suthikulpanit <suravee.suthikulpanit@....com>

This patch series modifies the existing IOMMU and Perf drivers to support
systems with multiple IOMMUs by allocating an amd_iommu PMU per IOMMU instance.
This allows users to specify performance events and filters separately for each
IOMMU.

This has been tested on the new family17h-based server w/ multiple IOMMUs.

Git branch containing this patch series is available here:

    https://github.com/ssuthiku/linux.git  perf-iommu-v7

Changes from V6 (https://lkml.org/lkml/2016/12/23/134)
  * Renamed function parameters from devid to idx (per Joerg).
  * Removed unnecessary function declarations from amd_iommu_proto.h
    (per Joerg).

Changes from V5 (https://lkml.org/lkml/2016/2/23/370)
  * Rebased onto v4.9.
  * Remove the patch which consolidates function delclarations since
    we have not yet agreed on the appropriate place for the new header file.


Suravee Suthikulpanit (7):
  perf/amd/iommu: Misc fix up perf_iommu_read
  perf/amd/iommu: Modify functions to query max banks and counters
  perf/amd/iommu: Modify IOMMU API to allow specifying IOMMU index
  perf/amd/iommu: Declare pr_fmt and remove unnecessary pr_debug
  perf/amd/iommu: Clean up perf_iommu_enable_event
  iommu/amd: Introduce amd_iommu_get_num_iommus()
  perf/amd/iommu: Enable support for multiple IOMMUs

 arch/x86/events/amd/iommu.c     | 206 ++++++++++++++++++++--------------------
 arch/x86/events/amd/iommu.h     |  17 ++--
 drivers/iommu/amd_iommu_init.c  | 119 ++++++++++++++++-------
 drivers/iommu/amd_iommu_proto.h |   9 +-
 4 files changed, 201 insertions(+), 150 deletions(-)

-- 
1.8.3.1