On 10/08/2018 05:01, Junaid Shahid wrote: > On 08/09/2018 09:58 AM, Paolo Bonzini wrote: >> On 09/08/2018 02:45, Junaid Shahid wrote: >>> kvm should not attempt to read guest PDPTEs when CR0.PG = 0 and >>> CR4.PAE = 1. >>> >>> Signed-off-by: Junaid Shahid <junaids@xxxxxxxxxx> >> Do you have a testcase? >> > I could write a test case to trigger this condition, but we would > need to add some type of trace statement to this path so that the > test can easily detect whether or not the extraneous reads have > occurred. Perhaps you can write a standalone test (not using kvm-unit-tests) you can place the PDPTEs in a place where the read will cause a vmentry failure? Paolo
