From: Paolo Bonzini <pbonzini@redhat.com>
To: Gleb Natapov <gleb@minantech.com>
Cc: Avi Kivity <avi@cloudius-systems.com>,
"Huangweidong (C)" <weidong.huang@huawei.com>,
Gleb Natapov <gleb@redhat.com>, KVM <kvm@vger.kernel.org>,
"Michael S. Tsirkin" <mst@redhat.com>,
"Zhanghaoyu (A)" <haoyu.zhang@huawei.com>,
Luonengjun <luonengjun@huawei.com>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
Zanghongyong <zanghongyong@huawei.com>,
Avi Kivity <avi.kivity@gmail.com>,
"Jinxin (F)" <jinxin712@huawei.com>
Subject: Re: [Qemu-devel] [RFC] create a single workqueue for each vm to update vm irq routing table
Date: Thu, 28 Nov 2013 12:31:29 +0100 [thread overview]
Message-ID: <52972991.1050407@redhat.com> (raw)
In-Reply-To: <20131128112348.GF5822@minantech.com>
Il 28/11/2013 12:23, Gleb Natapov ha scritto:
>>> > > Unless what ? :) Unless reader is scheduled out?
>> >
>> > Yes. Or unless my brain is scheduled out in the middle of a sentence.
>> >
> So we will have to disable preemption in a reader to prevent big latencies for
> a writer, no?
I don't think that's necessary. The writer itself could also be
scheduled out, and the reader critical sections are really small. Let's
wait for Zhang to try SRCU and report back.
Paolo
next prev parent reply other threads:[~2013-11-28 11:31 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-26 12:40 [Qemu-devel] [RFC] create a single workqueue for each vm to update vm irq routing table Zhanghaoyu (A)
2013-11-26 12:47 ` Paolo Bonzini
2013-11-26 12:56 ` Gleb Natapov
2013-11-26 13:13 ` Paolo Bonzini
2013-11-28 3:46 ` Zhanghaoyu (A)
2013-11-26 16:05 ` Michael S. Tsirkin
2013-11-26 16:14 ` Gleb Natapov
2013-11-26 16:24 ` Michael S. Tsirkin
2013-11-30 2:46 ` Zhanghaoyu (A)
2013-11-26 13:18 ` Avi Kivity
2013-11-26 13:47 ` Paolo Bonzini
2013-11-26 14:36 ` Avi Kivity
2013-11-26 14:46 ` Paolo Bonzini
2013-11-26 14:54 ` Avi Kivity
2013-11-26 15:03 ` Gleb Natapov
2013-11-26 15:20 ` Paolo Bonzini
2013-11-26 15:25 ` Avi Kivity
2013-11-26 15:28 ` Paolo Bonzini
2013-11-26 15:35 ` Avi Kivity
2013-11-26 15:58 ` Paolo Bonzini
2013-11-26 16:06 ` Avi Kivity
2013-11-26 16:11 ` Michael S. Tsirkin
2013-11-26 16:21 ` Avi Kivity
2013-11-26 16:42 ` Paolo Bonzini
2013-11-26 16:08 ` Michael S. Tsirkin
2013-11-26 16:24 ` Gleb Natapov
2013-11-26 16:27 ` Avi Kivity
2013-11-26 16:38 ` Gleb Natapov
2013-11-26 16:28 ` Paolo Bonzini
2013-11-26 16:29 ` Avi Kivity
2013-11-26 16:37 ` Gleb Natapov
2013-11-28 6:27 ` Zhanghaoyu (A)
2013-11-28 8:55 ` Paolo Bonzini
2013-11-28 9:19 ` Gleb Natapov
2013-11-28 9:29 ` Paolo Bonzini
2013-11-28 9:43 ` Gleb Natapov
2013-11-28 9:49 ` Avi Kivity
2013-11-28 9:53 ` Paolo Bonzini
2013-11-28 10:16 ` Avi Kivity
2013-11-28 10:40 ` Paolo Bonzini
2013-11-28 10:47 ` Avi Kivity
2013-11-28 11:09 ` Gleb Natapov
2013-11-28 11:10 ` Paolo Bonzini
2013-11-28 11:16 ` Avi Kivity
2013-11-28 11:23 ` Gleb Natapov
2013-11-28 11:31 ` Paolo Bonzini [this message]
2013-11-28 11:33 ` Avi Kivity
2013-11-28 10:11 ` Gleb Natapov
2013-11-28 10:12 ` Avi Kivity
2013-11-28 11:02 ` Gleb Natapov
2013-11-28 11:18 ` Avi Kivity
2013-11-28 11:22 ` Gleb Natapov
2013-11-28 11:30 ` Avi Kivity
2013-11-28 11:33 ` Michael S. Tsirkin
2013-11-28 11:33 ` Gleb Natapov
2013-11-26 15:24 ` Avi Kivity
2013-11-28 9:14 ` Zhanghaoyu (A)
2013-11-28 9:20 ` Gleb Natapov
2013-11-26 12:48 ` Gleb Natapov
2013-11-26 12:50 ` Gleb Natapov
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