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cd9f040df6
linux_dsm_epyc7002/drivers/gpu/drm
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Linus Torvalds cd9f040df6 drm/i915: add 'reclaimable' to i915 self-reclaimable page allocations 
The hibernate issues that got fixed in commit 985b823b91 ("drm/i915:
fix hibernation since i915 self-reclaim fixes") turn out to have been
incomplete.  Vefa Bicakci tested lots of hibernate cycles, and without
the __GFP_RECLAIMABLE flag the system eventually fails to resume.

With the flag added, Vefa can apparently hibernate forever (or until he
gets bored running his automated scripts, whichever comes first).

The reclaimable flag was there originally, and was one of the flags that
were dropped (unintentionally) by commit 4bdadb9785 ("drm/i915:
Selectively enable self-reclaim") that introduced all these problems,
but I didn't want to just blindly add back all the flags in commit
985b823b91, and it looked like __GFP_RECLAIM wasn't necessary.  It
clearly was.

I still suspect that there is some subtle reason we're missing that
causes the problems, but __GFP_RECLAIMABLE is certainly not wrong to use
in this context, and is what the code historically used.  And we have no
idea what the causes the corruption without it.

Reported-and-tested-by: M. Vefa Bicakci <bicave@superonline.com>
Cc: Dave Airlie <airlied@gmail.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-07-18 09:44:37 -07:00
..
i2c drm/i2c/ch7006: Fix load detection false positives right after system init. 2009-12-16 17:04:45 +10:00
i810 include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
i830 include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
i915 drm/i915: add 'reclaimable' to i915 self-reclaimable page allocations 2010-07-18 09:44:37 -07:00
mga drm: convert drm_ioctl to unlocked_ioctl 2009-12-18 11:22:31 +10:00
nouveau drm/nv50: fix iommu errors caused by device reading from address 0 2010-06-08 11:03:45 +10:00
r128 include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
radeon drm/radeon/kms: fix shared ddc handling 2010-07-07 14:21:38 +10:00
savage drivers/gpu/drm: Use kzalloc 2010-05-18 15:57:05 +10:00
sis drm: convert drm_ioctl to unlocked_ioctl 2009-12-18 11:22:31 +10:00
tdfx drm: convert drm_ioctl to unlocked_ioctl 2009-12-18 11:22:31 +10:00
ttm drm/ttm: Allocate the page pool manager in the heap. 2010-07-07 12:14:11 +10:00
via Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2010-05-04 19:08:12 -07:00
vmwgfx drm/vmwgfx: return -EFAULT for copy_to_user errors 2010-06-08 09:33:41 +10:00
ati_pcigart.c ati_pcigart: fix printk format warning 2010-02-05 11:46:48 +10:00
drm_agpsupport.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
drm_auth.c drivers/gpu/drm: Use kzalloc 2010-05-18 15:57:05 +10:00
drm_buffer.c drm: Add generic multipart buffer. 2010-02-23 09:46:20 +10:00
drm_bufs.c Merge branch 'master' into for-next 2010-04-23 02:08:44 +02:00
drm_cache.c
drm_context.c
drm_crtc_helper.c drm/kms: disable/enable poll around switcheroo on/off 2010-06-01 10:36:02 +10:00
drm_crtc.c drm/drm_crtc: return -EFAULT on copy_to_user errors 2010-06-08 09:33:35 +10:00
drm_debugfs.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
drm_dma.c drivers/gpu/drm: Use kzalloc 2010-05-18 15:57:05 +10:00
drm_dp_i2c_helper.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
drm_drawable.c
drm_drv.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
drm_edid.c drm/edid: Allow non-fatal checksum errors in CEA blocks 2010-05-26 10:29:58 +10:00
drm_encoder_slave.c
drm_fb_helper.c drm: correctly update connector DPMS status in drm_fb_helper 2010-07-07 14:21:39 +10:00
drm_fops.c drivers/gpu/drm: Use kzalloc 2010-05-18 15:57:05 +10:00
drm_gem.c drm: free core gem object from driver callbacks 2010-04-20 13:19:33 +10:00
drm_hashtab.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
drm_info.c
drm_ioc32.c drm: convert drm_ioctl to unlocked_ioctl 2009-12-18 11:22:31 +10:00
drm_ioctl.c
drm_irq.c Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2010-04-27 08:22:50 -07:00
drm_lock.c
drm_memory.c drivers/gpu/drm/drm_memory.c: fix check for end of loop 2010-04-28 18:41:51 +10:00
drm_mm.c drm: Fix a bug in the range manager. 2010-02-15 11:19:14 +10:00
drm_modes.c drm/edid: Fix sync polarity for secondary GTF curve 2010-04-09 10:05:40 +10:00
drm_pci.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
drm_proc.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
drm_scatter.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
drm_sman.c
drm_stub.c Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2010-04-20 09:20:11 -07:00
drm_sysfs.c Merge branch 'drm-for-2.6.35' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2010-05-21 11:14:52 -07:00
drm_vm.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
Kconfig drm/radeon: fix power supply kconfig interaction. 2010-05-21 15:41:20 +10:00
Makefile drm: Add generic multipart buffer. 2010-02-23 09:46:20 +10:00
README.drm

README.drm 

************************************************************
* 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