]> git.baikalelectronics.ru Git - kernel.git/commit
projects / kernel.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 65ed3af) | patch
s390: use 64-bit lctlg to load task pid to cr4 on context switch
authorMartin Schwidefsky <schwidefsky@de.ibm.com>
Mon, 3 Apr 2017 11:30:23 +0000 (13:30 +0200)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Wed, 5 Apr 2017 05:35:14 +0000 (07:35 +0200)
commit364f1614f5c213985ef3915c93e6b770789c8510
tree35160f929d3067f977ec2f7bc700a019792b23d5tree | snapshot
parent65ed3aff6f1c6770274323337a0d57d18a59e592commit | diff
s390: use 64-bit lctlg to load task pid to cr4 on context switch

The 32-bit lctl instruction is quite a bit slower than the 64-bit
counter part lctlg. Use the faster instruction.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
arch/s390/kernel/entry.S diff | blob | history
Linux Kernel Source Tree.