Date: Sat, 2 Oct 2010 15:43:58 +0200 (CEST) From: Juergen Lock <nox@jelal.kn-bremen.de> To: linimon@FreeBSD.org Cc: freebsd-xen@FreeBSD.org, freebsd-bugs@FreeBSD.org, jkim@FreeBSD.org, Yuriy Kohut <ykohut@onapp.com> Subject: Re: kern/148262: [xen] [panic] HYPERVISOR_update_va_mapping Message-ID: <201010021343.o92Dhw0p062168@triton8.kn-bremen.de> In-Reply-To: <201007031118.o63BIvvB062963@freefall.freebsd.org>
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[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.)
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