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s390: scrub registers on kernel entry and KVM exit
authorMartin Schwidefsky <schwidefsky@de.ibm.com>
Fri, 27 Apr 2018 05:36:28 +0000 (07:36 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 29 Apr 2018 09:33:14 +0000 (11:33 +0200)
commit2ae8b68382ce0c5e911090b502e0fda14191c730
tree1baf738c4c2bbc2926cb74dc65c96fd311f7ea78tree | snapshot
parentea5566fecd035bc5d84d8bd341b655238134deb8commit | diff
s390: scrub registers on kernel entry and KVM exit

[ Upstream commit 7041d28115e91f2144f811ffe8a195c696b1e1d0 ]

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>
arch/s390/kernel/entry.S diff | blob | history
Domain: System / Kernel;