Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
parisc: Fix CONFIG_TLB_PTLOCK to work with lightweight spinlock checks
commit 7a894c8 upstream. For the TLB_PTLOCK checks we used an optimization to store the spc register into the spinlock to unlock it. This optimization works as long as the lightweight spinlock checks (CONFIG_LIGHTWEIGHT_SPINLOCK_CHECK) aren't enabled, because they really check if the lock word is zero or __ARCH_SPIN_LOCK_UNLOCKED_VAL and abort with a kernel crash ("Spinlock was trashed") otherwise. Drop that optimization to make it possible to activate both checks at the same time. Noticed-by: Sam James <sam@gentoo.org> Signed-off-by: Helge Deller <deller@gmx.de> Tested-by: Sam James <sam@gentoo.org> Cc: stable@vger.kernel.org # v6.4+ Fixes: 15e64ef ("parisc: Add lightweight spinlock checks") Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
- Loading branch information
Showing
1 changed file
with
23 additions
and
24 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters