Martin Schwidefsky d768bd892f s390: add options to change branch prediction behaviour for the kernel ... Add the PPA instruction to the system entry and exit path to switch the kernel to a different branch prediction behaviour. The instructions are added via CPU alternatives and can be disabled with the "nospec" or the "nobp=0" kernel parameter. If the default behaviour selected with CONFIG_KERNEL_NOBP is set to "n" then the "nobp=1" parameter can be used to enable the changed kernel branch prediction. Acked-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>		2018-02-05 13:49:17 +01:00
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asm	s390: add options to change branch prediction behaviour for the kernel	2018-02-05 13:49:17 +01:00
uapi/asm	s390/runtime instrumentation: provide uapi header file	2018-02-02 10:47:15 +01:00