From: Avi Kivity <avi@qumranet.com>
To: Beth Kon <eak@us.ibm.com>
Cc: kvm@vger.kernel.org
Subject: Re: Need help with windows debug tools - HPET problems on win2k864
Date: Sat, 13 Sep 2008 07:50:09 +0300 [thread overview]
Message-ID: <48CB4681.9060403@qumranet.com> (raw)
In-Reply-To: <1221182870.29525.25.camel@beth-ubuntu>
Beth Kon wrote:
> I ran into trouble trying to get the hpet working with win2k864. It
> hangs very early on (black screen with "Windows is loading Files" at the
> bottom). My guess is there are problems with our acpi/bios changes,
> since they introduce some ACPI 2.0 structures and QEMU/KVM supports ACPI
> 1.0. We may not have enough 2.0 infrastructure to get it working right
> for 64 bit. Win2k832 does work with the hpet, but 64 doesn't.
>
> So! I need to figure out how to debug Windows and Anthony suggested that
> there may be some people with experience here.
>
Something that's worked for me is to enable memory dump triggered by
ctrl-ctrl-scroll-lock. There's some registry key you set, and on the
next hang you can generate a memory dump, which you can then analyze
with windbg.
Of course, your hang might well occur earlier than disk driver
initialization, so this is not bulletproof.
--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.
next prev parent reply other threads:[~2008-09-13 4:52 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-12 1:27 Need help with windows debug tools - HPET problems on win2k864 Beth Kon
2008-09-12 18:40 ` Sebastian Herbszt
2008-09-13 4:50 ` Avi Kivity [this message]
2008-09-14 19:00 ` Beth Kon
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