On 6/26/19 6:28 AM, Christian Borntraeger wrote:
On 26.06.19 11:45, David Hildenbrand wrote:
BTW. there is currently no mechanism to fake absence of diag318. Should
we have one? (in contrast, for CMMA we have, which is also a CPU feature)
Yes, we want to be able to disable diag318 via a CPU model feature. That actually
means that the kernel must not answer this if we disable it.
Correct. If the guest specifies diag318=off, then the instruction
shouldn't be executed (it is fenced off in the kernel by checking the
Read SCP Info bit).
