From: Avi Kivity <avi@redhat.com>
To: Alex Williamson <alex.williamson@redhat.com>
Cc: mst@redhat.com, gleb@redhat.com, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v11] kvm: Add resampling irqfds for level triggered interrupts
Date: Sun, 23 Sep 2012 13:50:28 +0200 [thread overview]
Message-ID: <505EF784.7060504@redhat.com> (raw)
In-Reply-To: <20120921175601.32604.63271.stgit@bling.home>
On 09/21/2012 08:58 PM, Alex Williamson wrote:
> To emulate level triggered interrupts, add a resample option to
> KVM_IRQFD. When specified, a new resamplefd is provided that notifies
> the user when the irqchip has been resampled by the VM. This may, for
> instance, indicate an EOI. Also in this mode, posting of an interrupt
> through an irqfd only asserts the interrupt. On resampling, the
> interrupt is automatically de-asserted prior to user notification.
> This enables level triggered interrupts to be posted and re-enabled
> from vfio with no userspace intervention.
>
> All resampling irqfds can make use of a single irq source ID, so we
> reserve a new one for this interface.
>
Thanks, applied.
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
prev parent reply other threads:[~2012-09-23 11:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-21 17:58 [PATCH v11] kvm: Add resampling irqfds for level triggered interrupts Alex Williamson
2012-09-23 11:50 ` Avi Kivity [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=505EF784.7060504@redhat.com \
--to=avi@redhat.com \
--cc=alex.williamson@redhat.com \
--cc=gleb@redhat.com \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mst@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.