David Herrmann acb4652703 drm: verify vma access in TTM+GEM drivers ... GEM does already a good job in tracking access to gem buffers via handles and drm_vma access management. However, TTM drivers currently do not verify this during mmap(). TTM provides the verify_access() callback to test this. So fix all drivers to actually call into gem+vma to verify access instead of always returning 0. All drivers assume that user-space can only get access to TTM buffers via GEM handles. So whenever the verify_access() callback is called from ttm_bo_mmap(), the buffer must have a valid embedded gem object. This is true for all TTM+GEM drivers. But that's why this patch doesn't touch pure TTM drivers (ie, vmwgfx). v2: Switch to drm_vma_node_verify_access() to correctly return -EACCES if access was denied. Cc: Dave Airlie <airlied@redhat.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Ben Skeggs <bskeggs@redhat.com> Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com> Cc: Jerome Glisse <jglisse@redhat.com> Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>		2013-08-27 11:54:58 +10:00
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ast_dram_tables.h
ast_drv.c	drm: rip out drm_core_has_MTRR checks	2013-08-19 14:11:44 +10:00
ast_drv.h	drm/gem: create drm_gem_dumb_destroy	2013-08-07 09:59:24 +10:00
ast_fb.c	drm/ast: do not attempt to acquire a reservation while in an interrupt handler	2013-06-28 11:56:39 +10:00
ast_main.c	drm/gem: create drm_gem_dumb_destroy	2013-08-07 09:59:24 +10:00
ast_mode.c
ast_post.c
ast_tables.h
ast_ttm.c	drm: verify vma access in TTM+GEM drivers	2013-08-27 11:54:58 +10:00
Kconfig
Makefile