* Andi Kleen ([EMAIL PROTECTED]) wrote: > On Wed, Aug 10, 2005 at 09:52:51PM -0700, [EMAIL PROTECTED] wrote: > > Xen requires error returns from the hypercall to update LDT entries, > > and this generates completely equivalent code on native. > > I don't think that is something we want. Nothing in the callers will check > the errors anyways. If Xen has such a requirement it should kill > the guest when it is violated, otherwise they will be ignored.
In this case the callers do propagate the error (unless you mean userspace doesn't check return value from syscall, which is same problem if copy_from_user failed, for example). Xen has done some more wrapping of the hypercalls to be effectively synchronous exceptions on error. Keir, Ian, is that preferred method going forward? thanks, -chris - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
