From: Avi Kivity <avi@redhat.com>
To: Michael Crawford <mdcrawford@gmail.com>
Cc: kvm@vger.kernel.org
Subject: Re: How to debug a triple fault at startup?
Date: Mon, 22 Jun 2009 11:35:05 +0300 [thread overview]
Message-ID: <4A3F4239.7060103@redhat.com> (raw)
In-Reply-To: <dc9f86e80906211858g54fd1920rb701a80d435eca34@mail.gmail.com>
On 06/22/2009 04:58 AM, Michael Crawford wrote:
> I'm not completely certain, but I think I get a GPF whenever trying to
> output text to the screen once interrupts have been enabled.
>
> That is, before calling int 0x19, I can use printf from within
> rombios.c, and my messages appear. But from anywhere within the int19
> code, they don't.
>
> I definitely don't see the "Booting from hard drive message".
>
Try to hack the reset code to vm_stop(0) instead of resetting. You'll
then be able to examine guest registers with 'info registers' though the
monitor (or debugger), and perhaps see what went wrong.
--
error compiling committee.c: too many arguments to function
prev parent reply other threads:[~2009-06-22 8:34 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-21 16:02 How to debug a triple fault at startup? Michael Crawford
2009-06-21 20:02 ` Michael Crawford
2009-06-22 1:58 ` Michael Crawford
2009-06-22 8:05 ` Alexander Graf
2009-06-22 8:35 ` Avi Kivity [this message]
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