From: Alex Williamson <alex.williamson@redhat.com>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Jan Kiszka <jan.kiszka@siemens.com>,
Richard Weinberger <richard@nod.at>,
kvm@vger.kernel.org, avi@redhat.com,
Marcelo Tosatti <mtosatti@redhat.com>,
Bjorn Helgaas <bhelgaas@google.com>,
"Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: [PATCH 2/2] Device assignment: Fix MSI IRQ affinity setting
Date: Thu, 24 May 2012 17:23:48 -0600 [thread overview]
Message-ID: <1337901828.4714.82.camel@ul30vt> (raw)
In-Reply-To: <alpine.LFD.2.02.1205250018550.3231@ionos>
On Fri, 2012-05-25 at 01:01 +0200, Thomas Gleixner wrote:
> So the proper fix is that qemu tells the guest that mask bit is
> supported and catches the mask bit toggling before writing it out to
> the hardware for those devices which do not support it.
We can't necessarily do that, we have to work with the config space
we're give. Using the smallest possible MSI capability always works.
Adding mask bits may not fit in with the existing capabilities of the
physical device. Thanks,
Alex
next prev parent reply other threads:[~2012-05-24 23:24 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-24 17:02 [PATCH 1/2] Remove kvm_commit_irq_routes from error messages Richard Weinberger
2012-05-24 17:02 ` [PATCH 2/2] Device assignment: Fix MSI IRQ affinity setting Richard Weinberger
2012-05-24 18:20 ` Alex Williamson
[not found] ` <CAEMbtc+ycsC6u=CZ_Yg6C=WV=VqjA2uEDM5KWPM_7n3sZh_9Pw@mail.gmail.com>
2012-05-24 19:27 ` Richard Weinberger
2012-05-24 21:39 ` Thomas Gleixner
2012-05-24 21:53 ` Jan Kiszka
2012-05-24 22:11 ` Alex Williamson
2012-05-24 23:01 ` Thomas Gleixner
2012-05-24 23:23 ` Alex Williamson [this message]
2012-05-24 23:56 ` Thomas Gleixner
2012-05-25 2:37 ` Jan Kiszka
2012-05-24 22:17 ` Michael S. Tsirkin
2012-05-24 23:06 ` Thomas Gleixner
2012-05-24 23:19 ` Thomas Gleixner
2012-05-24 22:05 ` Alex Williamson
2012-05-24 20:47 ` Jan Kiszka
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=1337901828.4714.82.camel@ul30vt \
--to=alex.williamson@redhat.com \
--cc=avi@redhat.com \
--cc=bhelgaas@google.com \
--cc=jan.kiszka@siemens.com \
--cc=kvm@vger.kernel.org \
--cc=mst@redhat.com \
--cc=mtosatti@redhat.com \
--cc=richard@nod.at \
--cc=tglx@linutronix.de \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox