kern/148262: [xen] [panic] HYPERVISOR_update_va_mapping

[Yuriy Kohut]

I have built new FreeBSD XEN kernel based the RELENG_8_1

The problem still exists.

The kernel config file /sys/i386/conf/XEN version is:
$FreeBSD: src/sys/i386/conf/XEN,v 1.9.2.1.4.1 2010/06/14 02:09:06 kensmith Exp $


The problem is still on RELENG_8 too.
---
Yura

On Oct 2, 2010, at 4:43 PM, Juergen Lock wrote:

> [kern/149853 is a duplicate of this]
> 
> I don't use xen myself here but I helped someone on irc troubleshoot
> the same crash (before I saw these PRs), and found out the reason it
> didn't happen on 8.0 is the x86bios code is new in 8.1 and xen doesn't
> like this call in x86bios_map_mem():
> 
> 	x86bios_ivt = pmap_mapbios(X86BIOS_IVT_BASE, X86BIOS_IVT_SIZE);
> 
> see:
> 
> 	http://fxr.watson.org/fxr/source/compat/x86bios/x86bios.c?v=FREEBSD8#L498
> 
> It seems the only consumers of x86bios are atkbd(4), dpms(4), and
> vesa(4), and indeed removing atkbd(4) from the xen kernel got his
> domU running.
> 
> (And now that I just looked at /sys/i386/conf/XEN in svn I see this
> was already fixed in r204157, it only never got MFCd.)