On 01/19/2018 08:36 AM, Andrew Cooper wrote: > On 19/01/18 11:43, Jan Beulich wrote: > >>> @@ -99,6 +106,10 @@ UNLIKELY_END(realmode) >>> .Lvmx_vmentry_fail: >>> sti >>> SAVE_ALL >>> + >>> + SPEC_CTRL_ENTRY_FROM_PV /* Req: %rsp=regs/cpuinfo Clob: acd */ >> I think the use of the PV variant here requires a comment. > Oh. It used to have one... I'll try to find it.
I, in fact, meant to ask about this for a long time and always forgot. Perhaps your comment will say more than just why a PV variant is used here but in case it won't --- why do we have *any* mitigation here? We are never returning to the guest, do we? -boris _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
