s390/uaccess: introduce 'uaccesspt' kernel parameter
authorHeiko Carstens <heiko.carstens@de.ibm.com>
Mon, 27 Jan 2014 09:25:39 +0000 (10:25 +0100)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Fri, 21 Feb 2014 07:50:17 +0000 (08:50 +0100)
commit56f15e518cfdc732bd4e4da90e0c9cf2fc4e7c1b
treee86068ef02db989769aedb3e495d444e3f7d62eb
parent7385d0a550813c912094c5df22aeeb463712300e
s390/uaccess: introduce 'uaccesspt' kernel parameter

The uaccesspt kernel parameter allows to enforce using the uaccess page
table walk variant. This is mainly for debugging purposes, so this mode
can also be enabled on machines which support the mvcos instruction.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
arch/s390/lib/uaccess_mvcos.c