> From: Andrew Cooper [mailto:[email protected]] > Sent: Monday, October 28, 2019 11:02 PM > > At the time of fixing c/s 20f1976b44, no obvious errata had been published, > and BDF14 looked like the most obvious candidate. Subsequently, BDF93 > has > been published and it is obviously this. > > The erratum states that LER_TO_LIP is the only affected MSR. The > provisional > fix in Xen adjusted LER_FROM_LIP, but this is not correct. The FROM MSRs > are > intended to have TSX metadata, and for steppings with TSX enabled, it will > corrupt the value the guest sees, while for parts with TSX disabled, it is > redundant with FIXUP_TSX. Drop the LER_FROM_LIP adjustment. > > Replace BDF14 references with BDF93, drop the redundant 'bdw_erratum_' > prefix, > and use an Intel vendor check, as other vendors implement VT-x. > > Signed-off-by: Andrew Cooper <[email protected]>
Reviewed-by: Kevin Tian <[email protected]> _______________________________________________ Xen-devel mailing list [email protected] https://lists.xenproject.org/mailman/listinfo/xen-devel
