On Mon, Feb 01, 2021, Paolo Bonzini wrote: > On 01/02/21 09:46, Paolo Bonzini wrote: > > > > > > This comment be updated to call out the new TSX_CTRL behavior. > > > > > > /* > > > * On TAA affected systems: > > > * - nothing to do if TSX is disabled on the host. > > > * - we emulate TSX_CTRL if present on the host. > > > * This lets the guest use VERW to clear CPU buffers. > > > */ > > > > Ok. > > Hmm, but the comment is even more accurate now than before, isn't it? It > said nothing about hiding TSX_CTRL, so now it matches the code below.
Ha, that is technically true. But it says "nothing to do..." and then clears a flag. The other interpretation of "nothing to do... at runtime" is also wrong as KVM emulates the MSR as a nop. I guess I just find the whole comment more confusing than the code itself.
