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(parent: cc5b9a4) | patch
s390: add support to start the kernel in 64 bit mode.
authorMartin Schwidefsky <schwidefsky@de.ibm.com>
Thu, 23 Aug 2012 14:18:09 +0000 (16:18 +0200)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Tue, 9 Oct 2012 12:16:58 +0000 (14:16 +0200)
commit51eee033dca3d6dc81febc5a69f30b964f3bddf3
tree5f5a7b981e2febf38671cb5808e4acddde0005d3tree
parentcc5b9a45184e90037e6d5353279ec358e57965fdcommit | diff
s390: add support to start the kernel in 64 bit mode.

Do the switch to z/Architecture (alias 64 bit) mode early in head.S.
If the machine is already running in 64 bit mode the sigp turns into
a nop. With this change it doesn't matter in which mode the kernel
is started.

Reviewd-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
arch/s390/kernel/head.S diff | blob | blame | history
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