From: Gerd Hoffmann <kraxel@redhat.com>
To: dri-devel@lists.freedesktop.org
Cc: Thomas Zimmermann <tzimmermann@suse.de>,
Daniel Vetter <daniel.vetter@ffwll.ch>,
Gerd Hoffmann <kraxel@redhat.com>,
Christian Koenig <christian.koenig@amd.com>,
Huang Rui <ray.huang@amd.com>, David Airlie <airlied@linux.ie>,
Daniel Vetter <daniel@ffwll.ch>,
linux-kernel@vger.kernel.org (open list)
Subject: [PATCH v2 07/11] drm/ttm: drop VM_DONTDUMP
Date: Tue, 17 Sep 2019 11:24:00 +0200 [thread overview]
Message-ID: <20190917092404.9982-8-kraxel@redhat.com> (raw)
In-Reply-To: <20190917092404.9982-1-kraxel@redhat.com>
Not obvious why this is needed. According to Deniel Vetter this is most
likely a historic artefact dating back to the days where drm drivers
exposed hardware registers as mmap'able gem objects, to avoid dumping
touching those registers.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
drivers/gpu/drm/ttm/ttm_bo_vm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c
index 7c0e85c10e0e..4dc77a66aaf6 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_vm.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c
@@ -445,7 +445,7 @@ void ttm_bo_mmap_vma_setup(struct ttm_buffer_object *bo, struct vm_area_struct *
* VM_MIXEDMAP on all mappings. See freedesktop.org bug #75719
*/
vma->vm_flags |= VM_MIXEDMAP;
- vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
+ vma->vm_flags |= VM_IO | VM_DONTEXPAND;
}
EXPORT_SYMBOL(ttm_bo_mmap_vma_setup);
--
2.18.1
next prev parent reply other threads:[~2019-09-17 9:24 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190917092404.9982-1-kraxel@redhat.com>
2019-09-17 9:23 ` [PATCH v2 01/11] drm: add mmap() to drm_gem_object_funcs Gerd Hoffmann
2019-09-17 9:23 ` [PATCH v2 02/11] drm/shmem: switch shmem helper to &drm_gem_object_funcs.mmap Gerd Hoffmann
2019-09-23 13:29 ` Steven Price
2019-09-17 9:23 ` [PATCH v2 03/11] drm/shmem: drop VM_DONTDUMP Gerd Hoffmann
2019-09-23 13:32 ` Steven Price
2019-09-17 9:23 ` [PATCH v2 04/11] drm/shmem: drop VM_IO Gerd Hoffmann
2019-09-23 13:32 ` Steven Price
2019-09-17 9:23 ` [PATCH v2 05/11] drm/shmem: drop DEFINE_DRM_GEM_SHMEM_FOPS Gerd Hoffmann
2019-09-17 9:23 ` [PATCH v2 06/11] drm/ttm: factor out ttm_bo_mmap_vma_setup Gerd Hoffmann
2019-09-17 9:24 ` Gerd Hoffmann [this message]
2019-09-17 11:22 ` [PATCH v2 07/11] drm/ttm: drop VM_DONTDUMP Koenig, Christian
2019-09-17 11:40 ` Gerd Hoffmann
2019-09-17 9:24 ` [PATCH v2 08/11] drm/ttm: add drm_gem_ttm_mmap() Gerd Hoffmann
2019-09-17 9:24 ` [PATCH v2 09/11] drm/vram: switch vram helper to &drm_gem_object_funcs.mmap() Gerd Hoffmann
2019-09-17 9:24 ` [PATCH v2 10/11] drm/vram: drop verify_access Gerd Hoffmann
2019-09-17 9:24 ` [PATCH v2 11/11] drm/vram: drop DRM_VRAM_MM_FILE_OPERATIONS Gerd Hoffmann
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