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Filename Latest commit message Latest commit date
Chris Wilson a0fec594b0 drm/i915: Filter wake_flags passed to default_wake_function 
commit 20612303a0b45de748d31331407e84300c38e497 upstream.

(NOTE: This is the minimal backportable fix, a full fix is being
developed at https://patchwork.freedesktop.org/patch/388048/)

The flags passed to the wait_entry.func are passed onwards to
try_to_wake_up(), which has a very particular interpretation for its
wake_flags. In particular, beyond the published WF_SYNC, it has a few
internal flags as well. Since we passed the fence->error down the chain
via the flags argument, these ended up in the default_wake_function
confusing the kernel/sched.

Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/2110
Fixes: ef46884975 ("drm/i915: Propagate fence errors")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: <stable@vger.kernel.org> # v5.4+
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200728152144.1100-1-chris@chris-wilson.co.uk
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
[Joonas: Rebased and reordered into drm-intel-gt-next branch]
[Joonas: Added a note and link about more complete fix]
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
(cherry picked from commit f4b3c395540aa3d4f5a6275c5bdd83ab89034806)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-23 12:40:43 +02:00
arch riscv: Add sfence.vma after early page table changes 2020-09-23 12:40:43 +02:00
block block: only call sched requeue_request() for scheduled requests 2020-09-23 12:40:37 +02:00
certs
crypto
Documentation affs: fix basic permission bits to actually work 2020-09-09 19:12:34 +02:00
drivers drm/i915: Filter wake_flags passed to default_wake_function 2020-09-23 12:40:43 +02:00
fs f2fs: Return EOF on unaligned end of file DIO read 2020-09-23 12:40:38 +02:00
include KVM: MIPS: Change the definition of kvm type 2020-09-23 12:40:38 +02:00
init
ipc
kernel gcov: add support for GCC 10.1 2020-09-17 13:47:56 +02:00
lib kobject: Restore old behaviour of kobject_del(NULL) 2020-09-17 13:47:52 +02:00
LICENSES
mm mm/khugepaged.c: fix khugepaged's request size in collapse_file 2020-09-09 19:12:37 +02:00
net SUNRPC: stop printk reading past end of string 2020-09-23 12:40:36 +02:00
samples
scripts checkpatch: fix the usage of capture group ( ... ) 2020-09-09 19:12:37 +02:00
security
sound ASoC: meson: axg-toddr: fix channel order on g12 platforms 2020-09-23 12:40:39 +02:00
tools perf test: Free formats for perf pmu parse test 2020-09-23 12:40:41 +02:00
usr
virt KVM: fix memory leak in kvm_io_bus_unregister_dev() 2020-09-17 13:47:54 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
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Kbuild
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MAINTAINERS
Makefile Linux 5.4.66 2020-09-17 13:47:56 +02:00
README

README 

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

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

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.