Re: [Xen-devel] Xen 4.2 TODO / Release

[Roger Pau Monne <roger.pau@xxxxxxxxxx>]

Stefano Stabellini wrote:
> On Fri, 1 Jun 2012, Roger Pau Monne wrote:
> > * qemu-upstream for NetBSD: I'm currently working on this. It compiles
> > but VGA memory mapping seems to be wrong, and qemu gets a segfault when
> > trying to write to it.
> You might have to check the implementation of xc_domain_add_to_physmap
> on NetBSD. On the QEMU side xen_add_to_physmap is the relevant function.
> However I cannot see how it would be different from
> qemu-xen-traditional.
Well my description was not completely accurate, when the memory address 
is retrieved for the first time (vga.c:2225), qemu can write to it, but 
after some point (don't know exactly yet), the userspace process looses 
access to that memory region, and gets a segfault.
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