On Tue, Jul 12, 2022, Maxim Levitsky wrote: > On Mon, 2022-07-11 at 23:27 +0000, Sean Christopherson wrote: > > Wait to mark the TSS as busy during LTR emulation until after all fault > > checks for the LTR have passed. Specifically, don't mark the TSS busy if > > the new TSS base is non-canonical. > > > Took me a while to notice it but I see the canonical check now, so the patch > makes sense, and so: > > Reviewed-by: Maxim Levitsky <mlevitsk@xxxxxxxxxx> > > Unrelated, but I do wonder why we use cmpxchg_emulated for setting the busy > bit, while we use write_segment_descriptor to set the accessed bit. 99% certain it's a historical KVM bug in how it updates the accessed bit.
