From: Julian Seward <jseward@acm.org>
To: qemu-devel@nongnu.org
Cc: Paul Brook <paul@nowt.org>, Robert Reif <reif@earthlink.net>
Subject: Re: [Qemu-devel] [4799] Add instruction counter.
Date: Fri, 11 Jul 2008 18:59:29 +0200 [thread overview]
Message-ID: <200807111859.29718.jseward@acm.org> (raw)
In-Reply-To: <4876957D.9030502@earthlink.net>
On Friday 11 July 2008 01:04, Robert Reif wrote:
> running under valgrind produces this:
>
> valgrind --trace-children=yes qemu-system-sparc -kernel
> vmlinux-2.6.11+tcx -initrd linux.img -append "root=/dev/ram"
Minor side-note. When running qemu on valgrind, you should give
valgrind the --smc-check=all flag, so that it correctly handles
the situation where qemu generates new code into an area where
previously there was other code (iow, after the TB is flushed).
Otherwise all hell breaks loose (in Valgrind-land).
I have the impression that this became much more important after
Paul Brook's recent changes to support a deterministic time base,
since those cause qemu to much more frequently retranslate blocks
that contain I/O instructions. (Or something like that ...)
J
prev parent reply other threads:[~2008-07-11 17:07 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-29 1:03 [Qemu-devel] [4799] Add instruction counter Paul Brook
[not found] ` <6D074CEF-5086-4301-A19C-F1E76E6B313D@hotmail.com>
2008-06-29 4:44 ` C.W. Betts
2008-06-29 9:58 ` Laurent Desnogues
2008-06-29 11:57 ` J. Mayer
2008-06-29 12:28 ` Paul Brook
2008-06-29 13:12 ` J. Mayer
2008-06-29 18:44 ` Stuart Brady
2008-06-29 12:37 ` [Qemu-devel] " Jan Kiszka
2008-06-29 13:16 ` Paul Brook
2008-06-29 13:54 ` Jan Kiszka
2008-06-29 14:31 ` Paul Brook
2008-07-10 23:04 ` [Qemu-devel] " Robert Reif
2008-07-11 16:42 ` Blue Swirl
2008-07-11 16:59 ` Julian Seward [this message]
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