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[Qemu-devel] smp broken in tcg mode with --enable-io-thread?
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From: |
Jan Kiszka |
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Subject: |
[Qemu-devel] smp broken in tcg mode with --enable-io-thread? |
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Date: |
Fri, 18 Jun 2010 18:37:08 +0200 |
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User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
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
- [Qemu-devel] smp broken in tcg mode with --enable-io-thread?,
Jan Kiszka <=
- Re: [Qemu-devel] smp broken in tcg mode with --enable-io-thread?, Anthony Liguori, 2010/06/18
- [Qemu-devel] [PATCH] fix smp with tcg mode and --enable-io-thread, Marcelo Tosatti, 2010/06/21
- [Qemu-devel] Re: [PATCH] fix smp with tcg mode and --enable-io-thread, Jan Kiszka, 2010/06/21
- [Qemu-devel] Re: [PATCH] fix smp with tcg mode and --enable-io-thread, Jan Kiszka, 2010/06/21
- [Qemu-devel] Re: [PATCH] fix smp with tcg mode and --enable-io-thread, Marcelo Tosatti, 2010/06/21
- [Qemu-devel] Re: [PATCH] fix smp with tcg mode and --enable-io-thread, Jan Kiszka, 2010/06/22
- [Qemu-devel] Re: [PATCH] fix smp with tcg mode and --enable-io-thread, Jan Kiszka, 2010/06/23
- Re: [Qemu-devel] Re: [PATCH] fix smp with tcg mode and --enable-io-thread, Anthony Liguori, 2010/06/23
- [Qemu-devel] Re: [PATCH] fix smp with tcg mode and --enable-io-thread, Jan Kiszka, 2010/06/21
- Re: [Qemu-devel] Re: [PATCH] fix smp with tcg mode and --enable-io-thread, Alexander Graf, 2010/06/21