Heiko Carstens e991c24d68 s390/ctl_reg: make __ctl_load a full memory barrier ... We have quite a lot of code that depends on the order of the __ctl_load inline assemby and subsequent memory accesses, like e.g. disabling lowcore protection and the writing to lowcore. Since the __ctl_load macro does not have memory barrier semantics, nor any other dependencies the compiler is, theoretically, free to shuffle code around. Or in other words: storing to lowcore could happen before lowcore protection is disabled. In order to avoid this class of potential bugs simply add a full memory barrier to the __ctl_load macro. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>		2017-01-16 07:27:48 +01:00
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asm	s390/ctl_reg: make __ctl_load a full memory barrier	2017-01-16 07:27:48 +01:00
uapi/asm	s390/zcrypt: Introduce new zcrypt device status API	2016-12-14 16:33:38 +01:00