On 05.02.20 12:52, David Hildenbrand wrote: > On 03.02.20 14:19, Christian Borntraeger wrote: >> From: Janosch Frank <frankja@xxxxxxxxxxxxx> >> >> The SPX instruction is handled by the ulravisor. We do get a > > s/ulravisor/ultravisor/ ack > >> notification intercept, though. Let us update our internal view. >> >> In addition to that, when the guest prefix page is not secure, an >> intercept 112 (0x70) is indicated. To avoid this for the most common >> cases, we can make the guest prefix page protected whenever we pin it. >> We have to deal with 112 nevertheless, e.g. when some host code triggers >> an export (e.g. qemu dump guest memory). We can simply re-run the >> pinning logic by doing a no-op prefix change. >> >> Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx> > >
