On 09/10/2015 16:53, Roman Kagan wrote: >> > Why is this exit necessary? > The guest writes to synic-related MSRs and that should take "immediate" > effect. > > E.g. it may decide to disable or relocate the message page by writing to > SIMP MSR. The host is then supposed to stop accessing the old message > page before the vCPU proceeds to the next instruction. Hence the exit, > to allow the userspace to react accordingly before reentering the guest.
Ok, thanks! Paolo _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization