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Date:   Fri, 23 Dec 2016 20:38:43 +0700
From:   Suravee Suthikulpanit <>
To:     <>, <>
CC:     <>, <>, <>,
        <>, Suravee Suthikulpanit <>
Subject: [PATCH V6 0/7] perf/amd/iommu: Enable multi-IOMMU support

From: Suravee Suthikulpanit <>

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

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

Git branch containing this patch series is available here:  perf-iommu-v6

Changes from V5 (
  * 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 |  15 ++-
 4 files changed, 209 insertions(+), 148 deletions(-)


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