qemu-devel.nongnu.org archive mirror
 help / color / mirror / Atom feed
From: Jintack Lim <jintack@cs.columbia.edu>
To: QEMU Devel Mailing List <qemu-devel@nongnu.org>,
	KVM General <kvm@vger.kernel.org>
Subject: [Qemu-devel] How to check if Vt-d is capable of posted-interrupt?
Date: Mon, 30 Apr 2018 10:11:39 -0400	[thread overview]
Message-ID: <CAHyh4xgMqsxCUOH-_p=DWVWpp0stxfwdfFo2s2cn1nmR2v5Siw@mail.gmail.com> (raw)

Hi,

I wonder how to check if Vt-d is capable of posted-interrupt? I'm
using Intel E5-2630 v3.

I was once told that APICv and posted-interrupt capability always come
together. But it seems like my cpu support APICv
(/sys/module/kvm_intel/parameters/enable_apicv is Y), but
posted-interrupt capability is only shipped with the next generation
of the cpu (E5-2600 v4, which is Broadwell).

What would be an easy way to check this?

Thanks,
Jintack

             reply	other threads:[~2018-04-30 14:11 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-30 14:11 Jintack Lim [this message]
2018-04-30 17:44 ` [Qemu-devel] How to check if Vt-d is capable of posted-interrupt? Jintack Lim
2018-04-30 18:09   ` Alex Williamson
2018-04-30 18:13     ` Jintack Lim

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='CAHyh4xgMqsxCUOH-_p=DWVWpp0stxfwdfFo2s2cn1nmR2v5Siw@mail.gmail.com' \
    --to=jintack@cs.columbia.edu \
    --cc=kvm@vger.kernel.org \
    --cc=qemu-devel@nongnu.org \
    /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;
as well as URLs for NNTP newsgroup(s).