> From: Ross Lagerwall [mailto:ross.lagerw...@citrix.com] > Sent: Tuesday, May 30, 2017 10:05 PM > > Occasionally, on certain Broadwell CPUs MSR_IA32_LASTINTTOIP has been > observed to have the top three bits corrupted as though the MSR is using > the LBR_FORMAT_EIP_FLAGS_TSX format. This is incorrect and causes a > vmentry failure -- the MSR should contain an offset into the current > code segment. This is assumed to be erratum BDF14. Workaround the issue > by sign-extending into bits 48:63 for MSR_IA32_LASTINT{FROM,TO}IP. > > Signed-off-by: Ross Lagerwall <ross.lagerw...@citrix.com>
Reviewed-by: Kevin Tian <kevin.t...@intel.com> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
