[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
Re: port-xen/52016: Mismatch between mem_clusters and pmap_enter bounds check
On Wed, Mar 01, 2017 at 09:00:01AM +0000, Martin Husemann wrote:
> The following reply was made to PR port-xen/52016; it has been noted by GNATS.
> From: Martin Husemann <martin%duskware.de@localhost>
> To: gnats-bugs%NetBSD.org@localhost
> Subject: Re: port-xen/52016: Mismatch between mem_clusters and pmap_enter
> bounds check
> Date: Wed, 1 Mar 2017 09:59:01 +0100
> On Wed, Mar 01, 2017 at 08:55:01AM +0000, Manuel Bouyer wrote:
> > This is used by X11 to access the video adapter.
> So how can we find the bounds that the hypervisor allows for that and
> deny access outside of that?
I don't know. Maybe we should change the pmap to gracefully handle failure
from mmu operations. But that's not trivial.
On a physical hardware how do you know if a physical address is accessible or
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
NetBSD: 26 ans d'experience feront toujours la difference
Main Index |
Thread Index |