On 10.08.2017 16:23, Radim Krčmář wrote: > 2017-08-10 15:35+0200, David Hildenbrand: >> I also have a patch that allows VMX and nVMX to use the UC (unchached) >> memory type. >> . >> However I am not sure if we have to take care of anything special in that >> case? Any insights? > > We're modifying the EPT structure through cache in root mode and I think > the cache would have to be manually flushed before entering non-root > mode. > > And UC accesses are going to be slower, so I don't see the benefits for > VMX. We can allow UC in nVMX as it will make no difference. > That would mean, even fake it's existence but always create EPTP with WB for nVMX? -- Thanks, David
