On 05/02/21 09:16, Xu, Like wrote:
Hi Paolo, I am wondering if it is acceptable for you to review the minor Architecture LBR patch set without XSAVES for v5.12 ?As far as I know, the guest Arch LBR can still work without XSAVES support.
I dopn't think it can work. You could have two guests on the same physical CPU and the MSRs would be corrupted if the guests write to the MSR but they do not enable the LBRs.
Paolo
