Heiko Carstens fbbd7f1a51 s390: always save and restore all registers on context switch ... The switch_to() macro has an optimization to avoid saving and restoring register contents that aren't needed for kernel threads. There is however the possibility that a kernel thread execve's a user space program. In such a case the execve'd process can partially see the contents of the previous process, which shouldn't be allowed. To avoid this, simply always save and restore register contents on context switch. Cc: <stable@vger.kernel.org> # v2.6.37+ Fixes: fdb6d070ef ("switch_to: dont restore/save access & fpu regs for kernel threads") Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>		2017-12-05 07:51:08 +01:00
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asm	s390: always save and restore all registers on context switch	2017-12-05 07:51:08 +01:00
uapi/asm	s390/virtio: add BSD license to virtio-ccw	2017-12-05 07:51:07 +01:00