On Tue, Aug 16, 2005 at 05:06:18PM -0700, Chris Wright wrote:
> * 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
Nothing checks them in user space.
Also how would you handle them anyways? It just doesn't make sense.
-Andi
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