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From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Jani Nikula <jani.nikula@linux.intel.com>,
	David Airlie <airlied@linux.ie>,
	nouveau@lists.freedesktop.org, intel-gfx@lists.freedesktop.org,
	Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
	Roland Scheidegger <sroland@vmware.com>,
	dri-devel@lists.freedesktop.org,
	virtualization@lists.linux-foundation.org, linux-mm@kvack.org,
	Huang Rui <ray.huang@amd.com>,
	VMware Graphics <linux-graphics-maintainer@vmware.com>,
	Gerd Hoffmann <kraxel@redhat.com>,
	Daniel Vetter <daniel@ffwll.ch>,
	Rodrigo Vivi <rodrigo.vivi@intel.com>,
	spice-devel@lists.freedesktop.org,
	Andrew Morton <akpm@linux-foundation.org>,
	Chris Wilson <chris@chris-wilson.co.uk>,
	Christian Koenig <christian.koenig@amd.com>,
	Zack Rusin <zackr@vmware.com>, Ben Skeggs <bskeggs@redhat.com>
Subject: [Nouveau] [patch 0/7] drm, highmem: Cleanup io/kmap_atomic*() usage
Date: Wed, 03 Mar 2021 14:20:23 +0100
Message-ID: <20210303132023.077167457@linutronix.de> (raw)

None of the DRM usage sites of temporary mappings requires the side
effects of io/kmap_atomic(), i.e. preemption and pagefault disable.

Replace them with the io/kmap_local() variants, simplify the
copy_to/from_user() error handling and remove the atomic variants.

Thanks,

	tglx
---
 Documentation/driver-api/io-mapping.rst             |   22 +++-------
 drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c      |    7 +--
 drivers/gpu/drm/i915/i915_gem.c                     |   40 ++++++-------------
 drivers/gpu/drm/i915/selftests/i915_gem.c           |    4 -
 drivers/gpu/drm/i915/selftests/i915_gem_gtt.c       |    8 +--
 drivers/gpu/drm/nouveau/nvkm/subdev/devinit/fbmem.h |    8 +--
 drivers/gpu/drm/qxl/qxl_image.c                     |   18 ++++----
 drivers/gpu/drm/qxl/qxl_ioctl.c                     |   27 ++++++------
 drivers/gpu/drm/qxl/qxl_object.c                    |   12 ++---
 drivers/gpu/drm/qxl/qxl_object.h                    |    4 -
 drivers/gpu/drm/qxl/qxl_release.c                   |    4 -
 drivers/gpu/drm/ttm/ttm_bo_util.c                   |   20 +++++----
 drivers/gpu/drm/vmwgfx/vmwgfx_blit.c                |   30 +++++---------
 include/linux/highmem-internal.h                    |   14 ------
 include/linux/io-mapping.h                          |   42 --------------------
 15 files changed, 93 insertions(+), 167 deletions(-)
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Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-03 13:20 Thomas Gleixner [this message]
2021-03-03 13:20 ` [Nouveau] [patch 1/7] drm/ttm: Replace kmap_atomic() usage Thomas Gleixner
2021-03-04 17:42   ` Christian König
2021-03-03 13:20 ` [Nouveau] [patch 2/7] drm/vmgfx: Replace kmap_atomic() Thomas Gleixner
2021-03-04 18:47   ` Zack Rusin
2021-03-05 15:35   ` Roland Scheidegger
2021-03-03 13:20 ` [Nouveau] [patch 3/7] highmem: Remove kmap_atomic_prot() Thomas Gleixner
2021-03-03 13:20 ` [Nouveau] [patch 4/7] drm/qxl: Replace io_mapping_map_atomic_wc() Thomas Gleixner
2021-03-03 13:20 ` [Nouveau] [patch 5/7] drm/nouveau/device: " Thomas Gleixner
2021-03-03 13:20 ` [Nouveau] [patch 6/7] drm/i915: " Thomas Gleixner
2021-03-03 13:20 ` [Nouveau] [patch 7/7] io-mapping: Remove io_mapping_map_atomic_wc() Thomas Gleixner

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