From: Avi Kivity <avi@redhat.com>
To: Gleb Natapov <gleb@redhat.com>
Cc: kvm@vger.kernel.org, mst@redhat.com
Subject: Re: [RFC PATCH 0/2] irq destination caching prototype
Date: Mon, 13 Aug 2012 12:43:50 +0300 [thread overview]
Message-ID: <5028CC56.5060809@redhat.com> (raw)
In-Reply-To: <1344849408-2697-1-git-send-email-gleb@redhat.com>
On 08/13/2012 12:16 PM, Gleb Natapov wrote:
> Here is a quick prototype of what we discussed yesterday. This one
> caches only MSI interrupts for now. The obvious problem is that not
> all interrupts (namely IPIs and MSIs using KVM_CAP_SIGNAL_MSI) use irq
> routing table, so they cannot be cached.
Missing: switch the uncached path to a work queue, so we don't have to
iterate over all vcpus in interrupt context.
That isn't trivial; for edge-triggered interrupts we need to ignore
zeros (if polarity=0) but for level-triggered interrupts we need them to
override the previous setting. But we don't know the trigger mode and
polarity at this point.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2012-08-13 9:43 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
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 [this message]
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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