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xen/tools
Andrew Cooper c0de5d3b48 x86/spec-ctrl: Enumeration for IBPB_RET
The IBPB_RET bit indicates that the CPU's implementation of MSR_PRED_CMD.IBPB
does flush the RSB/RAS too.

This is part of XSA-422 / CVE-2022-23824.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
(cherry picked from commit 24496558e6)
2022-11-04 13:24:37 +00:00
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