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Zhenyu Wang 5ad59bf096 drm/i915/gvt: Fix PTE write flush for taking runtime pm properly 
Make sure to take runtime pm when write PTE flush which ensure to
write to hw properly. This fixes warning during mdev/vgpu creation
which will do ggtt reset.

------------[ cut here ]------------
WARNING: CPU: 1 PID: 9375 at drivers/gpu/drm/i915/intel_drv.h:1748 fwtable_write32+0x1c2/0x1e0 [i915]
 RPM wakelock ref not held during HW access
Call Trace:
  ? dump_stack+0x5c/0x81
  ? __warn+0xbe/0xe0
  ? warn_slowpath_fmt+0x5a/0x80
  ? wake_up_klogd+0x37/0x40
  ? vprintk_emit+0x2ef/0x370
  ? fwtable_write32+0x1c2/0x1e0 [i915]
  ? gtt_set_entry64+0xbb/0xd0 [i915]
  ? intel_vgpu_reset_ggtt+0x88/0xf0 [i915]
  ? intel_vgpu_init_gtt+0xa5/0x4f0 [i915]
  ? intel_gvt_create_vgpu+0x1b5/0x250 [i915]
  ? kobject_put+0x1b/0x50
  ? intel_vgpu_create+0x4e/0x130 [kvmgt]
  ? mdev_device_create+0x186/0x2a0 [mdev]
  ? create_store+0xba/0xe0 [mdev]
  ? create_store+0xba/0xe0 [mdev]
  ? kernfs_fop_write+0x109/0x1a0
  ? kernfs_fop_write+0x109/0x1a0
  ? __vfs_write+0x33/0x160
  ? __fput+0x161/0x1d0
  ? vfs_write+0xb0/0x190
  ? SyS_write+0x52/0xc0
  ? exit_to_usermode_loop+0x7a/0xa0
  ? entry_SYSCALL_64_fastpath+0x1e/0xad

v2: remove unrelated oops info

v3: change to take runtime pm for ggtt reset instead of get/put for
    each pte write flush

Fixes: d650ac0602 ("drm/i915/gvt: reset the GGTT entry when vGPU created")
Cc: Ping Gao <ping.a.gao@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2017-04-13 14:02:44 +08:00
arch Linux 4.11-rc4 2017-03-28 17:34:19 +10:00
block blk-mq: don't complete un-started request in timeout handler 2017-03-22 08:03:35 -06:00
certs certs: Add a secondary system keyring that can be added to dynamically 2016-04-11 22:48:09 +01:00
crypto net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
Documentation Linux 4.11-rc4 2017-03-28 17:34:19 +10:00
drivers drm/i915/gvt: Fix PTE write flush for taking runtime pm properly 2017-04-13 14:02:44 +08:00
firmware WHENCE: use https://linuxtv.org for LinuxTV URLs 2015-12-04 10:35:11 -02:00
fs driver core fix for 4.11-rc4 2017-03-26 11:05:42 -07:00
include Linux 4.11-rc4 2017-03-28 17:34:19 +10:00
init Change get_random_{int,log} to use the CRNG used by /dev/urandom and 2017-03-11 09:08:47 -08:00
ipc Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
kernel Linux 4.11-rc4 2017-03-28 17:34:19 +10:00
lib mm: convert generic code to 5-level paging 2017-03-09 11:48:47 -08:00
mm mm, swap: Remove WARN_ON_ONCE() in free_swap_slot() 2017-03-21 14:13:19 -07:00
net A fix for a writeback deadlock caused by a GFP_KERNEL allocation on the 2017-03-24 14:35:39 -07:00
samples Merge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2017-03-03 11:38:56 -08:00
scripts Linux 4.11-rc3 2017-03-23 12:05:13 +10:00
security Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
sound ALSA: hda - Adding a group of pin definition to fix headset problem 2017-03-23 09:39:55 +01:00
tools Linux 4.11-rc4 2017-03-28 17:34:19 +10:00
usr kbuild: initramfs cleanup, set target from Kconfig 2017-01-05 09:40:16 -08:00
virt KVM: arm/arm64: VGIC: Fix command handling while ITS being disabled 2017-03-07 15:44:08 +00:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore
.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2016-08-02 16:48:52 -04:00
.mailmap mailmap: add codeaurora.org names for nameless email commits 2017-01-10 18:31:55 -08:00
COPYING
CREDITS MAINTAINERS: Remove old e-mail address 2017-02-13 12:24:56 -05:00
Kbuild scripts/gdb: provide linux constants 2016-05-23 17:04:14 -07:00
Kconfig
MAINTAINERS Linux 4.11-rc4 2017-03-28 17:34:19 +10:00
Makefile Linux 4.11-rc4 2017-03-26 14:15:16 -07:00
README README: add a new README file, pointing to the Documentation/ 2016-10-24 08:12:35 -02:00

README 

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.