On 29.11.19 10:48, Janosch Frank wrote: > IO instruction data is routed through SIDAD for protected guests, so > adresses do not need to be checked, as this is kernel memory.
"do not need" - is it actually evil to check? I would have assumed the kernel checks and these checks are just superfluous but not dangerous? IOW, some overhead we can ignore for now easily. Same comment regarding doing the SIDAD access differently ... -- Thanks, David / dhildenb