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  1. 03 10月, 2012 1 次提交
  3. 26 9月, 2012 1 次提交
  5. 13 9月, 2012 1 次提交
  7. 07 9月, 2012 2 次提交
  9. 22 8月, 2012 1 次提交
  11. 25 7月, 2012 1 次提交
    • I
      drm: track dev_mapping in more robust and flexible way · 949c4a34
      由 Ilija Hadzic 提交于 
      Setting dev_mapping (pointer to the address_space structure
used for memory mappings) to the address_space of the first
opener's inode and then failing if other openers come in
through a different inode has a few restrictions that are
eliminated by this patch.

If we already have valid dev_mapping and we spot an opener
with different i_node, we force its i_mapping pointer to the
already established address_space structure (first opener's
inode). This will make all mappings from drm device hang off
the same address_space object.

Some benefits (things that now work and didn't work
before) of this patch are:

 * user space can mknod and use any number of device
   nodes and they will all work fine as long as the major
   device number is that of the drm module.
 * user space can even remove the first opener's device
   nodes and mknod the new one and the applications and
   windowing system will still work.
 * GPU drivers can safely assume that dev->dev_mapping is
   correct address_space and just blindly copy it
   into their (private) bdev.dev_mapping

For reference, some discussion that lead to this patch can
be found here:

http://lists.freedesktop.org/archives/dri-devel/2012-April/022283.htmlSigned-off-by: NIlija Hadzic <ihadzic@research.bell-labs.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>
      949c4a34
  13. 20 7月, 2012 1 次提交
  15. 02 6月, 2012 1 次提交
  17. 23 5月, 2012 1 次提交
  19. 22 5月, 2012 1 次提交
  21. 20 3月, 2012 1 次提交
  23. 17 2月, 2012 1 次提交
    • D
      drm: move pci bus master enable into driver. · 466e69b8
      由 Dave Airlie 提交于 
      The current enabling of bus mastering in the drm midlayer allows a large
race condition under kexec. When a kexec'ed kernel re-enables bus mastering
for the GPU, previously setup dma blocks may cause writes to random pieces
of memory. On radeon the writeback mechanism can cause these sorts of issues.

This patch doesn't fix the problem, but it moves the bus master enable under
the individual drivers control so they can move enabling it until later in
their load cycle and close the race.

Fix for radeon kms driver will be in a follow-up patch.
Signed-off-by: NDave Airlie <airlied@redhat.com>
      466e69b8
  25. 13 2月, 2012 9 次提交
  27. 09 2月, 2012 1 次提交
  29. 06 2月, 2012 1 次提交
  31. 30 1月, 2012 1 次提交
    • R
      vmwgfx: Fix assignment in vmw_framebuffer_create_handle · bf9c05d5
      由 Ryan Mallon 提交于 
      The assignment of handle in vmw_framebuffer_create_handle doesn't actually do anything useful and is incorrectly assigning an integer value to a pointer argument. It appears that this is a typo and should be dereferencing handle rather than assigning to it directly. This fixes a bug where an undefined handle value is potentially returned to user-space.
Signed-off-by: NRyan Mallon <rmallon@gmail.com>
Reviewed-by: Jakob Bornecrantz<jakob@vmware.com>
Cc: stable@vger.kernel.org
Signed-off-by: NDave Airlie <airlied@redhat.com>
      bf9c05d5
  33. 22 12月, 2011 1 次提交
    • X
      vmwgfx: fix incorrect VRAM size check in vmw_kms_fb_create() · 8a783896
      由 Xi Wang 提交于 
      Commit e133e737 didn't correctly fix the integer overflow issue.

-	unsigned int required_size;
+	u64 required_size;
	...
	required_size = mode_cmd->pitch * mode_cmd->height;
-	if (unlikely(required_size > dev_priv->vram_size)) {
+	if (unlikely(required_size > (u64) dev_priv->vram_size)) {

Note that both pitch and height are u32.  Their product is still u32 and
would overflow before being assigned to required_size.  A correct way is
to convert pitch and height to u64 before the multiplication.

	required_size = (u64)mode_cmd->pitch * (u64)mode_cmd->height;

This patch calls the existing vmw_kms_validate_mode_vram() for
validation.
Signed-off-by: NXi Wang <xi.wang@gmail.com>
Reviewed-and-tested-by: NThomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>
      8a783896
  35. 20 12月, 2011 1 次提交
  37. 19 12月, 2011 8 次提交
  39. 07 12月, 2011 1 次提交
  41. 06 12月, 2011 4 次提交