From: Jan Kiszka <jan.kiszka@siemens.com>
To: Alexander Graf <agraf@suse.de>
Cc: Anthony Liguori <aliguori@us.ibm.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
Avi Kivity <avi@redhat.com>,
kvm@vger.kernel.org, qemu-devel@nongnu.org
Subject: [Qemu-devel] Re: [PATCH 10/12] kvm: enable smp > 1
Date: Fri, 14 May 2010 17:54:08 +0200 [thread overview]
Message-ID: <4BED7220.9060203@siemens.com> (raw)
In-Reply-To: <679AB14D-A9CC-437E-932F-AC13CAC26BA5@suse.de>
Alexander Graf wrote:
> On 14.05.2010, at 17:48, Avi Kivity wrote:
>
>> On 05/14/2010 05:06 PM, Alexander Graf wrote:
>>> On 12.05.2010, at 23:25, Marcelo Tosatti wrote:
>>>
>>>
>>>> Process INIT/SIPI requests and enable -smp> 1.
>>>>
>>> Does this enable real SMP or does it still only allow one vcpu to run at a time?
>>>
>>>
>> The realest ever. Still doesn't use in-kernel irqchip (qemu-kvm does "real" smp with -no-kvm-irqchip as well).
>
> That's odd. On S390 I only get at most 100% cpu usage no matter how much -smp I pass.
--enable-io-thread?
If you had it disabled, it would also answer my question if -smp works
without problems without that feature.
Jan
--
Siemens AG, Corporate Technology, CT T DE IT 1
Corporate Competence Center Embedded Linux
next prev parent reply other threads:[~2010-05-14 15:54 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-12 21:24 [Qemu-devel] [PATCH 00/12] [PULL] qemu-kvm.git uq/master queue Marcelo Tosatti
2010-05-12 21:24 ` [Qemu-devel] [PATCH 01/12] Fix -mem-path with hugetlbfs Marcelo Tosatti
2010-05-12 21:24 ` [Qemu-devel] [PATCH 02/12] kvm: set cpu_single_env around KVM_RUN ioctl Marcelo Tosatti
2010-05-12 21:24 ` [Qemu-devel] [PATCH 03/12] make SIG_IPI to tcg vcpu thread reliable Marcelo Tosatti
2010-05-12 21:24 ` [Qemu-devel] [PATCH 04/12] standardize on qemu_cpu_kick for signalling cpu thread(s) Marcelo Tosatti
2010-05-12 21:24 ` [Qemu-devel] [PATCH 05/12] port qemu-kvm's on_vcpu code Marcelo Tosatti
2010-05-12 21:25 ` [Qemu-devel] [PATCH 06/12] kvm: synchronize state from cpu context Marcelo Tosatti
2010-05-12 21:25 ` [Qemu-devel] [PATCH 07/12] add cpu_is_stopped helper Marcelo Tosatti
2010-05-12 21:25 ` [Qemu-devel] [PATCH 08/12] move stop/stopped CPU_COMMON fields after area zeroed by reset Marcelo Tosatti
2010-05-12 21:25 ` [Qemu-devel] [PATCH 09/12] kvm: validate context for kvm cpu get/put operations Marcelo Tosatti
2010-05-12 21:25 ` [Qemu-devel] [PATCH 10/12] kvm: enable smp > 1 Marcelo Tosatti
2010-05-14 14:06 ` [Qemu-devel] " Alexander Graf
2010-05-14 15:48 ` Avi Kivity
2010-05-14 15:49 ` Alexander Graf
2010-05-14 15:54 ` Jan Kiszka [this message]
2010-05-14 15:58 ` Alexander Graf
2010-05-19 9:57 ` Udo Lembke
2010-05-19 16:21 ` Avi Kivity
2010-05-19 20:02 ` Udo Lembke
2010-05-20 6:12 ` Avi Kivity
2010-05-20 7:01 ` Udo Lembke
2010-05-12 21:25 ` [Qemu-devel] [PATCH 11/12] Do not stop VM if emulation failed in userspace Marcelo Tosatti
2010-05-12 21:25 ` [Qemu-devel] [PATCH 12/12] kvm: fix 80000001.EDX supported bit filtering Marcelo Tosatti
2010-05-17 18:10 ` [Qemu-devel] [PATCH 00/12] [PULL] qemu-kvm.git uq/master queue Anthony Liguori
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