From: Avi Kivity <avi@redhat.com>
To: Jan Kiszka <jan.kiszka@web.de>
Cc: qemu-devel@nongnu.org, Craig Brozefsky <craig@red-bean.com>
Subject: Re: [Qemu-devel] Re: software breakpoints disappearing/reappearing in KVM/qemu
Date: Sun, 10 Apr 2011 17:01:00 +0300 [thread overview]
Message-ID: <4DA1B81C.8000506@redhat.com> (raw)
In-Reply-To: <4D9F7597.7020604@web.de>
On 04/08/2011 11:52 PM, Jan Kiszka wrote:
> QEMU's gdbstub in KVM mode is simply not designed to account for guests
> swapping out code pages that contain breakpoints. Due to the fact that
> the Linux kernel does not do these weird things to its own code,
It actually happily patches its own code at certain circumstances. If
you debug early boot or suspend/resume or cpu hotplug you're likely to
encounter them.
> at
> least I never seriously thought about potential workarounds. As your
> approach indicates, those might become fairly guest-specific - if they
> can be implemented reliably at all.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2011-04-10 14:01 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-08 18:50 [Qemu-devel] software breakpoints disappearing/reappearing in KVM/qemu Craig Brozefsky
2011-04-08 20:16 ` Blue Swirl
2011-04-08 20:37 ` Craig Brozefsky
2011-04-08 20:52 ` [Qemu-devel] " Jan Kiszka
2011-04-10 14:01 ` Avi Kivity [this message]
2011-04-10 14:23 ` Jan Kiszka
2011-04-10 14:41 ` Avi Kivity
2011-04-10 15:16 ` Jan Kiszka
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=4DA1B81C.8000506@redhat.com \
--to=avi@redhat.com \
--cc=craig@red-bean.com \
--cc=jan.kiszka@web.de \
--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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).