From: Avi Kivity <avi@redhat.com>
To: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Jan Kiszka <jan.kiszka@web.de>,
qemu-devel <qemu-devel@nongnu.org>,
Liu Ping Fan <pingfank@linux.vnet.ibm.com>,
Alexander Graf <agraf@suse.de>,
Anthony Liguori <anthony@codemonkey.ws>,
kvm <kvm@vger.kernel.org>
Subject: Re: [PATCH] kvm: First step to push iothread lock out of inner run loop
Date: Wed, 27 Jun 2012 10:54:59 +0300 [thread overview]
Message-ID: <4FEABC53.6040007@redhat.com> (raw)
In-Reply-To: <20120626193420.GA19852@amt.cnet>
On 06/26/2012 10:34 PM, Marcelo Tosatti wrote:
>
> 1. read_lock(memmap_lock)
> 2. MemoryRegionSection mrs = lookup(addr)
> 3. qom_ref(mrs.mr->dev)
> 4. read_unlock(memmap_lock)
>
> 5. mutex_lock(dev->lock)
> 6. dispatch(&mrs, addr, data, size)
> 7. mutex_unlock(dev->lock)
>
> 8. qom_unref(mrs.mr->object)
The plan also includes eventually replacing read_lock() with rcu; so two
devices can be accessed in parallel with no cacheline bouncing.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2012-06-27 7:55 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4FE4F56D.1020201@web.de>
2012-06-22 22:55 ` [PATCH] kvm: First step to push iothread lock out of inner run loop Jan Kiszka
2012-06-23 0:22 ` Marcelo Tosatti
2012-06-23 9:06 ` Marcelo Tosatti
2012-06-23 11:45 ` Jan Kiszka
2012-06-24 8:49 ` Avi Kivity
2012-06-24 14:08 ` [Qemu-devel] " Jan Kiszka
2012-06-24 14:31 ` Avi Kivity
2012-07-06 17:16 ` Jan Kiszka
2012-07-06 18:06 ` Jan Kiszka
2012-07-08 7:49 ` Avi Kivity
2012-06-24 13:34 ` liu ping fan
2012-06-24 14:08 ` Jan Kiszka
2012-06-24 14:35 ` Avi Kivity
2012-06-24 14:40 ` Jan Kiszka
2012-06-24 14:46 ` Avi Kivity
2012-06-24 14:51 ` Jan Kiszka
2012-06-24 14:56 ` Avi Kivity
2012-06-24 14:58 ` Jan Kiszka
2012-06-24 14:59 ` Avi Kivity
2012-06-23 9:22 ` Jan Kiszka
2012-06-28 1:11 ` Marcelo Tosatti
2012-06-26 19:34 ` Marcelo Tosatti
2012-06-27 7:39 ` Stefan Hajnoczi
2012-06-27 7:41 ` [Qemu-devel] " Stefan Hajnoczi
2012-06-27 11:09 ` Marcelo Tosatti
2012-06-27 11:19 ` [Qemu-devel] " Marcelo Tosatti
2012-06-28 8:45 ` Stefan Hajnoczi
2012-06-27 7:54 ` Avi Kivity [this message]
2012-06-27 14:36 ` Jan Kiszka
2012-06-28 14:10 ` [Qemu-devel] " Anthony Liguori
2012-06-28 15:12 ` Avi Kivity
2012-06-29 1:29 ` Marcelo Tosatti
2012-06-29 1:45 ` [Qemu-devel] " Marcelo Tosatti
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