On Tue, Oct 27, 2015 at 10:22 PM, Andy Lutomirski <[email protected]> wrote: > On Tue, Oct 27, 2015 at 6:39 PM, Paolo Bonzini <[email protected]> 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? --Andy
