From: "Michael S. Tsirkin" <mst@redhat.com>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Gleb Natapov <gleb@redhat.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"avi@redhat.com" <avi@redhat.com>,
"mtosatti@redhat.com" <mtosatti@redhat.com>
Subject: Re: [PATCHv3] KVM: optimize apic interrupt delivery
Date: Sun, 16 Sep 2012 13:56:55 +0300 [thread overview]
Message-ID: <20120916105655.GA25288@redhat.com> (raw)
In-Reply-To: <5051B72E.8040105@siemens.com>
On Thu, Sep 13, 2012 at 12:36:30PM +0200, Jan Kiszka wrote:
> On 2012-09-13 12:33, Gleb Natapov wrote:
> >>
> >> So, this can be the foundation for direct MSI delivery as well, right?
> >>
> > What do you mean by "direct MSI delivery"? kvm_irq_delivery_to_apic() is
> > called by MSI. If you mean delivery from irq context, then yes, mst
> > plans to do so.
>
> Yes, that's what I was aiming at.
>
> Jan
Avi, I've been debating with self whether it's still worth it
to bounce interrupts that don't get optimized such as
broadcasts, out to thread? Maybe we can just do direct delivery
unconditionally? Guests don't seem to use broadcasts at all widely ...
> --
> Siemens AG, Corporate Technology, CT RTC ITP SDP-DE
> Corporate Competence Center Embedded Linux
next prev parent reply other threads:[~2012-09-16 10:55 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-13 9:00 [PATCHv3] KVM: optimize apic interrupt delivery Gleb Natapov
2012-09-13 9:15 ` Avi Kivity
2012-09-13 10:29 ` Jan Kiszka
2012-09-13 10:33 ` Gleb Natapov
2012-09-13 10:36 ` Jan Kiszka
2012-09-16 10:56 ` Michael S. Tsirkin [this message]
2012-09-16 11:04 ` Avi Kivity
2012-09-13 11:51 ` Michael S. Tsirkin
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