From: "Michael S. Tsirkin" <mst@redhat.com>
To: Avi Kivity <avi@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH RFC] kvm: enable irq injection from interrupt context
Date: Thu, 16 Sep 2010 11:53:10 +0200 [thread overview]
Message-ID: <20100916095310.GG20864@redhat.com> (raw)
In-Reply-To: <4C91E75B.6010704@redhat.com>
On Thu, Sep 16, 2010 at 11:46:03AM +0200, Avi Kivity wrote:
> On 09/16/2010 11:25 AM, Gleb Natapov wrote:
> >>
> >> MSI only appeared in rhel6, older guests still use level interrupts.
> >So they are already slow for other reasons.
> >
>
> Exactly, for example they need to exit to userspace to ack the
> interrupt. That's far slower than the workqueue.
Well, this is not exactly comparable: you might get
same irq asserted multiple times and only deasserted once.
> --
> error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2010-09-16 9:59 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-15 18:54 Michael S. Tsirkin
2010-09-16 9:02 ` Gleb Natapov
2010-09-16 9:10 ` Michael S. Tsirkin
2010-09-16 9:25 ` Gleb Natapov
2010-09-16 9:43 ` Michael S. Tsirkin
2010-09-16 9:46 ` Avi Kivity
2010-09-16 9:53 ` Michael S. Tsirkin [this message]
2010-09-16 10:13 ` Gleb Natapov
2010-09-16 10:13 ` Michael S. Tsirkin
2010-09-16 10:20 ` Gleb Natapov
2010-09-16 10:44 ` Michael S. Tsirkin
2010-09-16 10:54 ` Gleb Natapov
2010-09-16 10:53 ` Michael S. Tsirkin
2010-09-16 11:17 ` Gleb Natapov
2010-09-16 12:13 ` Michael S. Tsirkin
2010-09-16 12:33 ` Gleb Natapov
2010-09-16 12:57 ` Michael S. Tsirkin
2010-09-16 13:14 ` Avi Kivity
2010-09-16 13:38 ` Michael S. Tsirkin
2010-09-16 13:50 ` Avi Kivity
2010-09-16 13:55 ` Gleb Natapov
2010-09-16 13:18 ` Gleb Natapov
2010-09-16 13:51 ` Michael S. Tsirkin
2010-09-16 14:06 ` Gleb Natapov
2010-09-16 14:23 ` Michael S. Tsirkin
2010-09-16 14:51 ` Gleb Natapov
2010-09-16 15:24 ` Michael S. Tsirkin
2010-09-16 15:43 ` Gleb Natapov
2010-09-16 22:07 ` Michael S. Tsirkin
2010-09-17 7:59 ` Gleb Natapov
2010-09-19 10:45 ` Michael S. Tsirkin
2010-09-19 10:56 ` Avi Kivity
2010-09-19 10:55 ` Michael S. Tsirkin
2010-09-19 11:05 ` Avi Kivity
2010-09-19 11:23 ` Michael S. Tsirkin
2010-09-19 11:18 ` Gleb Natapov
2010-09-19 11:21 ` Michael S. Tsirkin
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