From: Daniel J Blueman <daniel@numascale.com>
Date: Tue, 4 Nov 2014 08:29:42 +0000 (+0800)
Subject: x86: numachip: Elide self-IPI ICR polling
X-Git-Tag: omap-for-v3.19/fixes-rc1~155^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=25e5a76bae106e1673887db09e22b19cb1a86c45;p=pandora-kernel.git

x86: numachip: Elide self-IPI ICR polling

The default self-IPI path polls the ICR to delay sending the IPI until
there is no IPI in progress. This is redundant on x86-86 APICs, since
IPIs are queued. See the AMD64 Architecture Programmer's Manual, vol 2,
p525.

Signed-off-by: Daniel J Blueman <daniel@numascale.com>
Cc: Steffen Persvold <sp@numascale.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Link: http://lkml.kernel.org/r/1415089784-28779-2-git-send-email-daniel@numascale.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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