]> git.baikalelectronics.ru Git - kernel.git/commit
projects / kernel.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: d26f0c0) | patch
parisc: Fix extraction of hash lock bits in syscall.S
authorJohn David Anglin <dave.anglin@bell.net>
Fri, 19 Nov 2021 21:18:47 +0000 (22:18 +0100)
committerHelge Deller <deller@gmx.de>
Mon, 22 Nov 2021 06:37:31 +0000 (07:37 +0100)
commit95f2eeb092c6b15be2eafe1004aa056d5356785f
treec60a4592b2f2ae3cb7f4d11cb7877a485db517ectree | snapshot
parentd26f0c01aebf6b6c706c5d2d1b14a949c9d503d8commit | diff
parisc: Fix extraction of hash lock bits in syscall.S

The extru instruction leaves the most significant 32 bits of the target
register in an undefined state on PA 2.0 systems. If any of these bits
are nonzero, this will break the calculation of the lock pointer.

Fix by using extrd,u instruction via extru_safe macro on 64-bit kernels.

Signed-off-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>
arch/parisc/kernel/syscall.S diff | blob | history
Linux Kernel Source Tree.