mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: Roger Pau Monne <roger.pau@citrix.com>
To: <linux-kernel@vger.kernel.org>
Cc: Roger Pau Monne <roger.pau@citrix.com>
Subject: [PATCH 0/2] xen/x86: use extended destination mode if available
Date: Thu, 20 Jan 2022 16:25:25 +0100	[thread overview]
Message-ID: <20220120152527.7524-1-roger.pau@citrix.com> (raw)

Hello,

Following two patches enable the usage of the extended destination ID if
supported by Xen. This is the same feature already supported by QEMU/KVM
and HyperV.

First patch can probably go in regardless of whether Xen ends up
implementing the extended destination ID, there's no reason to prevent a
VM from using x2APIC mode.

Thanks, Roger.

Roger Pau Monne (2):
  xen/x2apic: enable x2apic mode when supported
  xen/x86: detect support for extended destination ID

 arch/x86/include/asm/xen/cpuid.h | 7 +++++++
 arch/x86/xen/enlighten_hvm.c     | 9 ++++++++-
 2 files changed, 15 insertions(+), 1 deletion(-)

-- 
2.34.1


             reply	other threads:[~2022-01-20 15:32 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-20 15:25 Roger Pau Monne [this message]
2022-01-20 15:25 ` [PATCH 1/2] xen/x2apic: enable x2apic mode when supported Roger Pau Monne
2022-01-21  1:01   ` Boris Ostrovsky
2022-01-21  9:01     ` [PATCH] xen/x2apic: enable x2apic mode when supported for HVM Roger Pau Monne
2022-01-21 20:30       ` Boris Ostrovsky
2022-02-03  6:50       ` Juergen Gross
2022-01-20 15:25 ` [PATCH 2/2] xen/x86: detect support for extended destination ID Roger Pau Monne
2022-02-07  9:03   ` Juergen Gross

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=20220120152527.7524-1-roger.pau@citrix.com \
    --to=roger.pau@citrix.com \
    --cc=linux-kernel@vger.kernel.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
Powered by JetHome