From: Glauber Costa <glommer@gmail.com>
To: Jan Kiszka <jan.kiszka@web.de>
Cc: Glauber Costa <glommer@redhat.com>,
aliguori@us.ibm.com, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Re: [PATCH 0/7] KVM SMP support, early version
Date: Mon, 30 Nov 2009 09:42:42 -0200 [thread overview]
Message-ID: <5d6222a80911300342x4d29653as6c23acac598dec64@mail.gmail.com> (raw)
In-Reply-To: <4B12B042.9020409@web.de>
On Sun, Nov 29, 2009 at 3:32 PM, Jan Kiszka <jan.kiszka@web.de> wrote:
> Glauber Costa wrote:
>> Hi guys,
>>
>> This is an early version of smp support in kvm that kinda works.
>> It has some known problems that I am still tracking. For example,
>> it does not reset very well. Also, initialization is a bit slow,
>> probably because of the number of remote ioctl calls involved.
>> But I believe Jan's patch to do a single ioctl can make it better.
>
> That approach has been buried, we decided to continue extending via new
> ioctls.
>
> But why do you need that many remote calls during init? Aren't the
> initial ioctls issued by the vcpu threads themselves?
Yes, but system_reset is called from the io-thread, and it fires a lot
of ioctls.
However, I have an already working version that does a much better job
than that.
Will post today with details
--
Glauber Costa.
"Free as in Freedom"
http://glommer.net
"The less confident you are, the more serious you have to act."
next prev parent reply other threads:[~2009-11-30 11:42 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-26 17:24 [Qemu-devel] [PATCH 0/7] KVM SMP support, early version Glauber Costa
2009-11-26 17:24 ` [Qemu-devel] [PATCH 1/7] Don't mess with halted state Glauber Costa
2009-11-26 17:24 ` [Qemu-devel] [PATCH 2/7] store thread-specific env information Glauber Costa
2009-11-26 17:24 ` [Qemu-devel] [PATCH 3/7] update halted state on mp_state sync Glauber Costa
2009-11-26 17:24 ` [Qemu-devel] [PATCH 4/7] qemu_flush_work for remote vcpu execution Glauber Costa
2009-11-26 17:24 ` [Qemu-devel] [PATCH 5/7] tell kernel about all registers instead of just mp_state Glauber Costa
2009-11-26 17:24 ` [Qemu-devel] [PATCH 6/7] Don't call kvm cpu reset on initialization Glauber Costa
2009-11-26 17:25 ` [Qemu-devel] [PATCH 7/7] remove smp restriction from kvm Glauber Costa
2009-11-29 15:32 ` [Qemu-devel] [PATCH 5/7] tell kernel about all registers instead of just mp_state Avi Kivity
2009-11-30 11:45 ` Glauber Costa
2009-11-30 12:04 ` Gleb Natapov
2009-11-30 12:05 ` Avi Kivity
2009-11-30 13:31 ` Glauber Costa
2009-11-30 13:32 ` Avi Kivity
2009-11-29 15:32 ` [Qemu-devel] [PATCH 4/7] qemu_flush_work for remote vcpu execution Avi Kivity
2009-11-30 11:44 ` Glauber Costa
2009-11-30 12:06 ` Avi Kivity
2009-11-30 11:48 ` [Qemu-devel] " Paolo Bonzini
2009-11-29 15:29 ` [Qemu-devel] [PATCH 2/7] store thread-specific env information Avi Kivity
2009-11-29 15:38 ` Andreas Färber
2009-11-29 15:42 ` Avi Kivity
2009-11-29 16:00 ` Andreas Färber
2009-11-29 22:29 ` Jamie Lokier
2009-11-30 11:36 ` [Qemu-devel] " Paolo Bonzini
2009-11-30 11:41 ` Glauber Costa
2009-11-30 11:49 ` Paolo Bonzini
2009-11-30 12:07 ` Avi Kivity
2009-11-29 17:32 ` [Qemu-devel] Re: [PATCH 0/7] KVM SMP support, early version Jan Kiszka
2009-11-30 11:42 ` Glauber Costa [this message]
2009-11-30 15:55 ` Glauber Costa
2009-11-30 16:40 ` Avi Kivity
2009-11-30 16:47 ` Glauber Costa
2009-11-30 17:30 ` Jan Kiszka
2009-12-01 12:10 ` Avi Kivity
2009-12-01 12:17 ` Jan Kiszka
2009-12-01 12:20 ` Glauber Costa
2009-12-01 12:33 ` Jan Kiszka
2009-11-30 16:50 ` Avi Kivity
2009-12-01 0:31 ` [Qemu-devel] " Ed Swierk
2009-12-01 0:42 ` Ed Swierk
2009-12-01 12:20 ` Alexander Graf
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