Re: port-xen/52016: Mismatch between mem_clusters and pmap_enter bounds check

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

The following reply was made to PR port-xen/52016; it has been noted by GNATS.

From: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
To: coypu%SDF.ORG@localhost
Cc: gnats-bugs%NetBSD.org@localhost, port-xen-maintainer%netbsd.org@localhost
Subject: Re: port-xen/52016: Mismatch between mem_clusters and pmap_enter
 bounds check
Date: Wed, 1 Mar 2017 12:13:10 +0100

 On Wed, Mar 01, 2017 at 09:55:40AM +0000, coypu%SDF.ORG@localhost wrote:
 > On Wed, Mar 01, 2017 at 09:35:01AM +0000, Manuel Bouyer wrote:
 > >  AFAIK X11 uses /dev/mem to access the hardware.
 > >  
 > 
 > Huh, so it does.
 > I guess X doesn't currently fail because it's already mapped
 > by the boot process, so no fault and no trip to pmap_enter?
 
 No, it works because the hypervisor allows mapping the video
 harware address. I don't know why it rejects the addresses used by dmidecode
 
 -- 
 Manuel Bouyer <bouyer%antioche.eu.org@localhost>
      NetBSD: 26 ans d'experience feront toujours la difference
 --