mirror of
https://github.com/torvalds/linux.git
synced 2026-07-31 11:37:06 +02:00
Linux kernel source tree
a33c9699e7
xe_exec_queue_kill can sleep, so we can't call it from under a spinlock.
We can instead move the queues to a separate list and then kill them all
after we release the spinlock.
Furthermore, xe_exec_queue_kill can take the VM lock so we can't call it
while holding the PXP mutex because the mutex is taken under VM lock at
queue creation time. Note that while it is safe to call the kill without
holding the mutex, we must call it after the PXP state has been updated,
otherwise an app might be able to create a queue between the
invalidation and the state update, which would break the state machine.
Since being in the list is used to track whether RPM cleanup is needed,
we can no longer defer that to queue_destroy, so we perform it
immediately instead.
v2: also avoid calling kill() under pxp->mutex.
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/intel-xe/34aaced9-4a9d-4e8c-900a-b8f73452e35c@stanley.mountain/
Fixes:
|
||
|---|---|---|
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .clippy.toml | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| 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 reStructuredText 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.