On Wed, 2025-02-26 at 11:00 -0600, Tom Lendacky wrote: > On 2/25/25 15:03, Borislav Petkov wrote: > > On Tue, Feb 25, 2025 at 09:38:03PM +0100, Borislav Petkov wrote: > > > On Tue, Feb 25, 2025 at 02:17:20PM -0500, Rik van Riel wrote: > > > > Who do we need to ask to confirm that reading? > > > > > > Lemme figure it out. > > > > Confirmed - that really is the case. > > Hmmm... since this is for host/hypervisor TLB handling, this makes me > think that we should always be setting the ASID valid bit with 0 for > the > ASID value in EDX[15:0] on all INVLPGB instructions in this series. > Otherwise we will also be flushing any guest ASID TLB entries that > match > the conditions, when that isn't intended. The ASID is always zero in this series. We only ever use the PCID for address space identification. -- All Rights Reversed.
