From: Avi Kivity <avi@redhat.com>
To: Gleb Natapov <gleb@redhat.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>,
kvm@vger.kernel.org, Jan Kiszka <jan.kiszka@web.de>
Subject: Re: [RFC PATCH 0/2] irq destination caching prototype
Date: Mon, 13 Aug 2012 14:03:51 +0300 [thread overview]
Message-ID: <5028DF17.2050008@redhat.com> (raw)
In-Reply-To: <20120813110108.GX3341@redhat.com>
On 08/13/2012 02:01 PM, Gleb Natapov wrote:
>>
>> Actually this is overkill. Suppose we do an apicid->vcpu translation
>> cache? Then we retain O(1) behaviour, no need for a huge cache.
>>
> Not sure I follow.
Unicast MSIs and IPIs can be speeded up by looking up the vcpu using the
apic id, using a static lookup table (only changed when the guest
updates apicid or a vcpu is inserted).
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2012-08-13 11:03 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-13 9:16 [RFC PATCH 0/2] irq destination caching prototype Gleb Natapov
2012-08-13 9:16 ` [RFC PATCH 1/2] Call irq_rt callback under rcu_read_lock() Gleb Natapov
2012-08-13 9:16 ` [RFC PATCH 2/2] Cache msi irq destination Gleb Natapov
2012-08-13 9:32 ` Avi Kivity
2012-08-13 9:34 ` Gleb Natapov
2012-08-13 9:34 ` [RFC PATCH 0/2] irq destination caching prototype Michael S. Tsirkin
2012-08-13 9:36 ` Gleb Natapov
2012-08-13 9:46 ` Michael S. Tsirkin
2012-08-13 9:48 ` Gleb Natapov
2012-08-13 9:36 ` Avi Kivity
2012-08-13 10:12 ` Michael S. Tsirkin
2012-08-13 10:16 ` Gleb Natapov
2012-08-13 10:21 ` Avi Kivity
2012-08-13 10:24 ` Gleb Natapov
2012-08-13 10:31 ` Avi Kivity
2012-08-13 10:35 ` Gleb Natapov
2012-08-13 10:38 ` Michael S. Tsirkin
2012-08-13 10:58 ` Avi Kivity
2012-08-13 11:01 ` Gleb Natapov
2012-08-13 11:03 ` Avi Kivity [this message]
2012-08-13 11:12 ` Gleb Natapov
2012-08-13 11:22 ` Michael S. Tsirkin
2012-08-13 11:29 ` Gleb Natapov
2012-08-13 11:43 ` Gleb Natapov
2012-08-13 12:14 ` Avi Kivity
2012-08-13 11:30 ` Avi Kivity
2012-08-13 11:41 ` Gleb Natapov
2012-08-13 12:13 ` Avi Kivity
2012-08-13 12:59 ` Michael S. Tsirkin
2012-08-13 11:19 ` Michael S. Tsirkin
2012-08-13 9:43 ` Avi Kivity
2012-08-13 9:51 ` Michael S. Tsirkin
2012-08-13 9:53 ` Gleb Natapov
2012-08-13 10:33 ` Gleb Natapov
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