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mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-23 12:43:55 +08:00
linux-next/drivers/gpu/drm
Linus Torvalds fc8744adc8 Stop playing silly games with the VM_ACCOUNT flag
The mmap_region() code would temporarily set the VM_ACCOUNT flag for
anonymous shared mappings just to inform shmem_zero_setup() that it
should enable accounting for the resulting shm object.  It would then
clear the flag after calling ->mmap (for the /dev/zero case) or doing
shmem_zero_setup() (for the MAP_ANON case).

This just resulted in vma merge issues, but also made for just
unnecessary confusion.  Use the already-existing VM_NORESERVE flag for
this instead, and let shmem_{zero|file}_setup() just figure it out from
that.

This also happens to make it obvious that the new DRI2 GEM layer uses a
non-reserving backing store for its object allocation - which is quite
possibly not intentional.  But since I didn't want to change semantics
in this patch, I left it alone, and just updated the caller to use the
new flag semantics.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-31 15:08:56 -08:00
..
i810 drm: reorganise drm tree to be more future proof. 2008-07-14 10:45:01 +10:00
i830 drm: reorganise drm tree to be more future proof. 2008-07-14 10:45:01 +10:00
i915 drivers/gpu/drm/i915/intel_lvds.c: fix locking snafu 2009-01-29 18:04:45 -08:00
mga drm: move drm vblank initialization/cleanup to driver load/unload 2008-11-25 09:49:03 +10:00
r128 drm: move drm vblank initialization/cleanup to driver load/unload 2008-11-25 09:49:03 +10:00
radeon drm/radeon: use locked rmmap to remove sarea mapping. 2008-12-29 17:47:24 +10:00
savage drm: reorganise drm tree to be more future proof. 2008-07-14 10:45:01 +10:00
sis SiS DRM: fix a pointer cast warning 2008-10-18 07:10:10 +10:00
tdfx drm: reorganise drm tree to be more future proof. 2008-07-14 10:45:01 +10:00
via drm: move drm vblank initialization/cleanup to driver load/unload 2008-11-25 09:49:03 +10:00
ati_pcigart.c drm: reorganise drm tree to be more future proof. 2008-07-14 10:45:01 +10:00
drm_agpsupport.c drm: stash AGP include under the do-we-have-AGP ifdef 2009-01-22 22:27:11 +10:00
drm_auth.c drm: move to kref per-master structures. 2008-12-29 17:47:22 +10:00
drm_bufs.c drm/radeon: use locked rmmap to remove sarea mapping. 2008-12-29 17:47:24 +10:00
drm_cache.c drm: wbinvd is cache coherent. 2008-10-18 07:10:53 +10:00
drm_context.c drm: move to kref per-master structures. 2008-12-29 17:47:22 +10:00
drm_crtc_helper.c drm: handle depth & bpp changes correctly 2009-01-16 18:40:57 +10:00
drm_crtc.c drm: create mode_config idr lock 2009-01-22 17:53:05 +10:00
drm_dma.c drm: reorganise drm tree to be more future proof. 2008-07-14 10:45:01 +10:00
drm_drawable.c drm: Avoid oops in DRM_IOCTL_RM_DRAW if a bad handle is supplied. 2008-10-23 13:46:54 +10:00
drm_drv.c drm: fix leak of device mappings since multi-master changes. 2009-01-19 17:17:58 +10:00
drm_edid.c drm: don't whine about not reading EDID data 2009-01-22 22:23:53 +10:00
drm_fops.c Check fops_get() return value 2009-01-06 15:59:11 -08:00
drm_gem.c Stop playing silly games with the VM_ACCOUNT flag 2009-01-31 15:08:56 -08:00
drm_hashtab.c drm: GEM mmap support 2008-12-29 17:47:22 +10:00
drm_ioc32.c drm: Add 32-bit compatibility for DRM_IOCTL_UPDATE_DRAW. 2008-10-23 13:46:33 +10:00
drm_ioctl.c drm: fix leak of uninitialized data to userspace 2008-12-29 17:47:22 +10:00
drm_irq.c drm: Rip out the racy, unused vblank signal code. 2009-01-28 07:50:14 -08:00
drm_lock.c drm: move to kref per-master structures. 2008-12-29 17:47:22 +10:00
drm_memory.c drm: Add GEM ("graphics execution manager") to i915 driver. 2008-10-18 07:10:12 +10:00
drm_mm.c DRM: add mode setting support 2008-12-29 17:47:23 +10:00
drm_modes.c DRM: add mode setting support 2008-12-29 17:47:23 +10:00
drm_pci.c drm: reorganise drm tree to be more future proof. 2008-07-14 10:45:01 +10:00
drm_proc.c drm: Add a debug node for vblank state. 2008-12-29 17:47:27 +10:00
drm_scatter.c drm: reorganise drm tree to be more future proof. 2008-07-14 10:45:01 +10:00
drm_sman.c drm: reorganise drm tree to be more future proof. 2008-07-14 10:45:01 +10:00
drm_stub.c drm: fix leak of device mappings since multi-master changes. 2009-01-19 17:17:58 +10:00
drm_sysfs.c gpu: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:41 -08:00
drm_vm.c drm: GEM mmap support 2008-12-29 17:47:22 +10:00
Kconfig drm: kconfig have drm core select i2c for kms 2008-12-29 17:47:24 +10:00
Makefile DRM: add mode setting support 2008-12-29 17:47:23 +10:00
README.drm drm: reorganise drm tree to be more future proof. 2008-07-14 10:45:01 +10:00

************************************************************
* For the very latest on DRI development, please see:      *
*     http://dri.freedesktop.org/                          *
************************************************************

The Direct Rendering Manager (drm) is a device-independent kernel-level
device driver that provides support for the XFree86 Direct Rendering
Infrastructure (DRI).

The DRM supports the Direct Rendering Infrastructure (DRI) in four major
ways:

    1. The DRM provides synchronized access to the graphics hardware via
       the use of an optimized two-tiered lock.

    2. The DRM enforces the DRI security policy for access to the graphics
       hardware by only allowing authenticated X11 clients access to
       restricted regions of memory.

    3. The DRM provides a generic DMA engine, complete with multiple
       queues and the ability to detect the need for an OpenGL context
       switch.

    4. The DRM is extensible via the use of small device-specific modules
       that rely extensively on the API exported by the DRM module.


Documentation on the DRI is available from:
    http://dri.freedesktop.org/wiki/Documentation
    http://sourceforge.net/project/showfiles.php?group_id=387
    http://dri.sourceforge.net/doc/

For specific information about kernel-level support, see:

    The Direct Rendering Manager, Kernel Support for the Direct Rendering
    Infrastructure
    http://dri.sourceforge.net/doc/drm_low_level.html

    Hardware Locking for the Direct Rendering Infrastructure
    http://dri.sourceforge.net/doc/hardware_locking_low_level.html

    A Security Analysis of the Direct Rendering Infrastructure
    http://dri.sourceforge.net/doc/security_low_level.html