s390: scrub registers on kernel entry and KVM exit

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[ Upstream commit 7041d28115 ]

Clear all user space registers on entry to the kernel and all KVM guest
registers on KVM guest exit if the register does not contain either a
parameter or a result value.

Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Martin Schwidefsky 2018-04-27 07:36:28 +02:00 • committed by Greg Kroah-Hartman

parent ea5566fecd

commit 2ae8b68382

1 changed files with 47 additions and 0 deletions

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arch/s390/kernel/entry.S

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