x86: allow easier disabling of BTI mitigations
authorJan Beulich <jbeulich@suse.com>
Fri, 2 Feb 2018 10:56:08 +0000 (11:56 +0100)
committerJan Beulich <jbeulich@suse.com>
Fri, 2 Feb 2018 10:56:08 +0000 (11:56 +0100)
commit37f02a06b9d2f9d965b747a6752301314e935571
tree2377937a2e4c7617d992f8be3927196e6dc5ac06
parent52ba201362aab4b09d44bcca67967c1053721ac2
x86: allow easier disabling of BTI mitigations

Support both a "disable everything" and a "disable all RSB overwriting"
sub-option.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
docs/misc/xen-command-line.markdown
xen/arch/x86/spec_ctrl.c