From: Jan Kiszka <jan.kiszka@siemens.com>
To: qemu-devel <qemu-devel@nongnu.org>
Subject: [Qemu-devel] smp broken in tcg mode with --enable-io-thread?
Date: Fri, 18 Jun 2010 18:37:08 +0200 [thread overview]
Message-ID: <4C1BA0B4.2010803@siemens.com> (raw)
Hi,
looks like SMP in emulation mode is broken once --enable-io-thread is
turned on. Linux SMP guests lock up early during boot, often the whole
QEMU process becomes uncontrollable after a while. That's at least the
case here with x86 targets. The problem disappears when using
-enable-kvm or building without --enable-io-thread.
It's not on my critical path (ie. no time to go into details), I just
stumbled over it and wanted to drop a note.
Jan
--
Siemens AG, Corporate Technology, CT T DE IT 1
Corporate Competence Center Embedded Linux
next reply other threads:[~2010-06-18 16:37 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-18 16:37 Jan Kiszka [this message]
2010-06-18 19:53 ` [Qemu-devel] smp broken in tcg mode with --enable-io-thread? Anthony Liguori
2010-06-21 19:31 ` [Qemu-devel] [PATCH] fix smp with tcg mode and --enable-io-thread Marcelo Tosatti
2010-06-21 20:25 ` [Qemu-devel] " Jan Kiszka
2010-06-21 20:58 ` Jan Kiszka
2010-06-21 23:06 ` Marcelo Tosatti
2010-06-22 8:06 ` Jan Kiszka
2010-06-23 7:42 ` Jan Kiszka
2010-06-23 16:19 ` Anthony Liguori
2010-06-21 22:13 ` Jan Kiszka
2010-06-21 22:25 ` Alexander Graf
2010-06-22 7:59 ` Jan Kiszka
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