|
From: | Avi Kivity |
Subject: | [Qemu-devel] Re: [RFC] Moving the kvm ioapic, pic, and pit back to userspace |
Date: | Thu, 10 Jun 2010 05:59:03 +0300 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100430 Fedora/3.0.4-3.fc13 Thunderbird/3.0.4 |
On 06/10/2010 05:37 AM, Dong, Eddie wrote:
Avi Kivity wrote:On 06/09/2010 06:59 PM, Dong, Eddie wrote:Besides VF IO interrupt and timer interrupt introduced performance overhead risk,VF usually uses MSITypo, I mean PV IO.
That also uses MSI these days.
A VF interrupt usually happens in 4-8KHZ. How about the virtio? I assume virtio will be widely used together w/ leagcy guest with INTx mode.
True, but in time it will be replaced by MSI.Note without vhost virtio is also in userspace, so there are lots of exits anyway for the status register.
-- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.
[Prev in Thread] | Current Thread | [Next in Thread] |