On Wed, Mar 29, 2023, Xiaoyao Li wrote: > On 3/28/2023 11:07 PM, Sean Christopherson wrote: > > On Tue, Mar 28, 2023, Xiaoyao Li wrote: > > > On 3/28/2023 1:02 PM, Sean Christopherson wrote: > > > > Add a define for PRED_CMD_IBPB and use it to replace the open coded '1' in > > > > the nVMX library. > > > > > > What does nVMX mean here? > > > > Nested VMX. From KUT's perspective, the testing exists to validate KVM's nested > > VMX implementation. If it's at all confusing, I'll drop the 'n' And we've already > > established that KUT can be used on bare metal, even if that's not the primary use > > case. > > So vmexit.flat is supposed to be ran in L1 VM? Not all of the tests can be run on bare metal, e.g. I can't imagine the VMware backdoor test works either. > I'm confused and interested in how KUT is used on bare metal. I haven't used KUT on bare metal myself, but the idea is pretty much the same as running under QEMU/KVM: boot into the KUT "kernel" after getting through firmwrae instead of transferring control to an actual OS. I assume the biggest challenges are getting the image loaded, and getting info out of KUT, e.g. having a serial port with something on the backend to capture/display output.
