[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH 2/2] x86/svm: Add checks for nested HW features
On Fri, Dec 22, 2017 at 03:15:48PM +0000, Andrew Cooper wrote: > Unfortunately, nestedhvm_enabled() is guaranteed to be false at the > point that construct_vmcb() is called (due the order in which > information appears while constructing the VM), which means we will > never enable these optimisations. > > Combined with the observation of EFER in the pipeline, the logic to > enable/disable these optimisations needs to be in > svm_update_guest_efer(), and need to trigger when EFER.SVME changes. > > ~Andrew Sorry for the late reply. I tired working this before vacation but it turned out to be a little bit longer than that... I have a set of patches that _should_ work, but there are other issues. Turns out there are interrupt issues with nestted SVM HVM and I'm trying to hunt those down and fix them so I can properly test the patches I've done. Oddly enough you can at least get a system booted on 17h family systems even if it's fragile but 15h just fails to even boot. Not sure how it even worked when I tested previous patches on the 15h system. -- Brian Woods _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
|
Lists.xenproject.org is hosted with RackSpace, monitoring our |