x86: numachip: Elide self-IPI ICR polling

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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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Daniel J Blueman 2014-11-04 16:29:42 +08:00 • committed by Thomas Gleixner

parent 00e7977dd1

commit 25e5a76bae

1 changed files with 1 additions and 1 deletions

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arch/x86/kernel/apic/apic_numachip.c

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