On 14/03/2016 20:23, Andy Lutomirski wrote: > On Tue, Oct 27, 2015 at 10:22 PM, Andy Lutomirski <luto@xxxxxxxxxxxxxx> wrote: >> On Tue, Oct 27, 2015 at 6:39 PM, Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote: >>> x86 always calls user_enter and user_exit with interrupt disabled. >>> Therefore, it is not necessary to check for exceptions, nor to >>> save/restore the IRQ state, when context tracking functions are >>> called by guest_enter and guest_exit. >>> >>> Use the previously introduced __context_tracking_entry and >>> __context_tracking_exit. >> >> x86 isn't ready for this yet. We could do a quick-and-dirty fix with >> explicit IRQs-on-and-off much protected by the static key, or we could >> just wait until I finish the syscall cleanup. I favor the latter, but >> you're all welcome to do the former and I'll review it. >> > > Once Linus pulls tip:x86/asm, x86 should be ready for this. Want to try again? Yup, it's on my todo list. :) Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
