All of lore.kernel.org
 help / color / mirror / Atom feed
From: Andriy Gapon <avg@FreeBSD.org>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] in_asm substitute for accel=kvm:tcg
Date: Tue, 17 Sep 2013 14:37:17 +0300	[thread overview]
Message-ID: <52383EED.6080602@FreeBSD.org> (raw)


It seems that when qemu is run with accel=kvm:tcg then -d in_asm does not
produce anything.  At least, with the qemu and kvm that I have access to.
Is there any way to obtain equivalent logging in such a configuration?
A note: a host and a guest are both amd64 (x86_64).

Some background.  I am trying to debug a problem with booting a FreeBSD VM.  If
acceleration is not used then the VM boots just fine.  But with acceleration the
boot process hangs somewhere in FreeBSD boot loader, judging from what I see on
a screen.
I suspect that there could be a problem with jumping from real to protected mode
or some such "exotic" environment.  To narrow down the possibilities I would
like to examine execution trace and see where execution goes into the weeds.

Thank you very much in advance.
-- 
Andriy Gapon

             reply	other threads:[~2013-09-17 11:38 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-09-17 11:37 Andriy Gapon [this message]
2013-09-17 12:32 ` [Qemu-devel] in_asm substitute for accel=kvm:tcg Andreas Färber
2013-09-17 14:33   ` Andriy Gapon
2013-09-17 18:49     ` Gleb Natapov
2013-09-19 14:36       ` Andriy Gapon
2013-09-19 16:53         ` Paolo Bonzini
2013-09-19 17:18           ` Andriy Gapon
2013-09-19 17:26             ` Paolo Bonzini
2013-09-19 18:05               ` Andriy Gapon
2013-09-19 17:49           ` Andriy Gapon
2013-09-22  6:31             ` Gleb Natapov
2013-09-22  8:05               ` Andriy Gapon
2013-09-22  8:17                 ` Gleb Natapov
2013-09-22  9:41                   ` Andriy Gapon

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=52383EED.6080602@FreeBSD.org \
    --to=avg@freebsd.org \
    --cc=qemu-devel@nongnu.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.