K 10
svn:author
V 6
tychon
K 8
svn:date
V 27
2018-03-09T19:39:08.033188Z
K 7
svn:log
V 403
MFC r328011,329162

r328011:

Provide some mitigation against CVE-2017-5715 by clearing registers
upon returning from the guest which aren't immediately clobbered by
the host.  This eradicates any remaining guest contents limiting their
usefulness in an exploit gadget.

r329162:

Provide further mitigation against CVE-2017-5715 by flushing the
return stack buffer (RSB) upon returning from the guest.

END