2015-03-12 15:17-0500, Joel Schopp: > There isn't really a valid reason for kvm to intercept cr* reads > on svm hardware. The current kvm code just ends up returning > the register
There is no need to intercept CR* if the value that the guest should see is equal to what we set there, but that is not always the case: - CR0 might differ from what the guest should see because of lazy fpu - CR3 isn't intercepted with nested paging and it should differ otherwise - CR4 contains PAE bit when run without nested paging CR2 and CR8 already aren't intercepted, so it looks like only CR0 and CR4 could use some optimizations. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
