From: Avi Kivity <avi@redhat.com>
To: liu ping fan <qemulist@gmail.com>
Cc: kvm@vger.kernel.org, Stefan Hajnoczi <stefanha@gmail.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
qemu-devel@nongnu.org, Anthony Liguori <anthony@codemonkey.ws>,
Jan Kiszka <jan.kiszka@siemens.com>,
Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [Qemu-devel] [PATCH 1/5] qom: adopt rwlock to protect accessing dev from removing it
Date: Thu, 26 Jul 2012 16:15:46 +0300 [thread overview]
Message-ID: <50114302.5050509@redhat.com> (raw)
In-Reply-To: <CAJnKYQ=VK-zPTboRfPwj87Nuunn_KL1GHgDwm=+Aj7STC1oYxQ@mail.gmail.com>
On 07/26/2012 04:14 PM, liu ping fan wrote:
>>
>> From the description above, I don't see why it can't be a mutex.
>>
> Searching in the device tree (or MemoryRegion view) can be often in
> parallel, especially in mmio-dispatch code path
In mmio dispatch we have a pointer to the object, we don't need to
search anything. Is device tree search a hot path?
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2012-07-26 13:16 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-25 3:31 [Qemu-devel] [PATCH 0/5] prepare unplug out of protection of global lock Liu Ping Fan
2012-07-25 3:31 ` [Qemu-devel] [PATCH 1/5] qom: adopt rwlock to protect accessing dev from removing it Liu Ping Fan
2012-07-25 9:08 ` Paolo Bonzini
2012-07-26 12:56 ` liu ping fan
2012-07-26 13:00 ` Avi Kivity
2012-07-26 13:14 ` liu ping fan
2012-07-26 13:15 ` Avi Kivity [this message]
2012-07-26 13:21 ` liu ping fan
2012-07-26 13:46 ` Avi Kivity
2012-07-25 3:31 ` [Qemu-devel] [PATCH 2/5] exec.c: use refcnt to protect device during dispatching Liu Ping Fan
2012-07-25 7:43 ` Stefan Hajnoczi
2012-07-25 8:12 ` liu ping fan
2012-07-25 9:18 ` Paolo Bonzini
2012-07-26 13:00 ` liu ping fan
2012-07-25 10:58 ` Avi Kivity
2012-07-25 12:27 ` Avi Kivity
2012-07-26 13:06 ` liu ping fan
2012-07-26 13:13 ` Avi Kivity
2012-07-25 3:31 ` [Qemu-devel] [PATCH 3/5] hotplug: introduce qdev_unplug_ack() to remove device from views Liu Ping Fan
2012-07-25 10:58 ` Avi Kivity
2012-07-25 3:31 ` [Qemu-devel] [PATCH 4/5] qom: delay DeviceState's reclaim to main-loop Liu Ping Fan
2012-07-25 7:03 ` Stefan Hajnoczi
2012-07-25 7:37 ` Paolo Bonzini
2012-07-25 8:16 ` liu ping fan
2012-07-25 8:22 ` Paolo Bonzini
2012-07-25 8:17 ` liu ping fan
2012-07-25 3:31 ` [Qemu-devel] [PATCH 5/5] e1000: using new interface--unmap to unplug Liu Ping Fan
2012-07-25 7:12 ` Stefan Hajnoczi
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