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Message-ID: <20241028213146.238941-1-robdclark@gmail.com>
Date: Mon, 28 Oct 2024 14:31:36 -0700
From: Rob Clark <robdclark@...il.com>
To: iommu@...ts.linux.dev
Cc: linux-arm-msm@...r.kernel.org,
freedreno@...ts.freedesktop.org,
Will Deacon <will@...nel.org>,
Robin Murphy <robin.murphy@....com>,
Mostafa Saleh <smostafa@...gle.com>,
Rob Clark <robdclark@...omium.org>,
Boris Brezillon <boris.brezillon@...labora.com>,
dri-devel@...ts.freedesktop.org (open list:DRM DRIVER for Qualcomm Adreno GPUs),
Jason Gunthorpe <jgg@...pe.ca>,
Joao Martins <joao.m.martins@...cle.com>,
Joerg Roedel <jroedel@...e.de>,
Konrad Dybcio <konradybcio@...nel.org>,
linux-arm-kernel@...ts.infradead.org (moderated list:ARM SMMU DRIVERS),
linux-kernel@...r.kernel.org (open list),
linux-pm@...r.kernel.org (open list:POWER MANAGEMENT CORE),
Marijn Suijten <marijn.suijten@...ainline.org>,
"Rafael J. Wysocki" <rafael@...nel.org>,
Sean Paul <sean@...rly.run>,
Steven Price <steven.price@....com>
Subject: [PATCH v10 0/4] io-pgtable-arm + drm/msm: Extend iova fault debugging
From: Rob Clark <robdclark@...omium.org>
This series extends io-pgtable-arm with a method to retrieve the page
table entries traversed in the process of address translation, and then
beefs up drm/msm gpu devcore dump to include this (and additional info)
in the devcore dump.
This is a respin of https://patchwork.freedesktop.org/series/94968/
(minus a patch that was already merged)
v2: Fix an armv7/32b build error in the last patch
v3: Incorperate Will Deacon's suggestion to make the interface
callback based.
v4: Actually wire up the callback
v5: Drop the callback approach
v6: Make walk-data struct pgtable specific and rename
io_pgtable_walk_data to arm_lpae_io_pgtable_walk_data
v7: Re-use the pgtable walker added for arm_lpae_read_and_clear_dirty()
v8: Pass pte pointer to callback so it can modify the actual pte
v9: Fix selftests_running case
v10: Call visit cb for all nodes traversed, leave the decision about
whether to care about non-leaf nodes to the callback
Rob Clark (4):
iommu/io-pgtable-arm: Make pgtable walker more generic
iommu/io-pgtable-arm: Re-use the pgtable walk for iova_to_phys
iommu/io-pgtable-arm: Add way to debug pgtable walk
drm/msm: Extend gpu devcore dumps with pgtbl info
drivers/gpu/drm/msm/adreno/adreno_gpu.c | 10 ++
drivers/gpu/drm/msm/msm_gpu.c | 9 ++
drivers/gpu/drm/msm/msm_gpu.h | 8 ++
drivers/gpu/drm/msm/msm_iommu.c | 22 ++++
drivers/gpu/drm/msm/msm_mmu.h | 3 +-
drivers/iommu/io-pgtable-arm.c | 156 +++++++++++++++---------
include/linux/io-pgtable.h | 15 +++
7 files changed, 166 insertions(+), 57 deletions(-)
--
2.47.0
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