Hello! > > 1. Is there any real need to distinguish between KVM_EXIT_MSR_WRITE and > KVM_EXIT_MSR_AFTER_WRITE ? IMHO from userland's point of view these are the > same. > > Indeed. Perhaps the kernel can set .handled to true to let userspace > know it already took care of it, instead of introducing yet another > exit_reason. The field would need to be marked in/out, then.
I'm not sure that you need even this. Anyway, particular MSRs are function-specific, and if you're emulating an MSR in userspace, then, i believe, you know the function behind it. And it's IMHO safe to just know that SynIC MSRs have some extra handling in kernel. And i believe this has no direct impact on userland's behavior. But, you better know the details. Kind regards, Pavel Fedin Expert Engineer Samsung Electronics Research center Russia -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html