x86: Add NumaChip support
authorSteffen Persvold <sp@numascale.com>
Mon, 5 Dec 2011 16:07:26 +0000 (00:07 +0800)
committerIngo Molnar <mingo@elte.hu>
Mon, 5 Dec 2011 16:17:24 +0000 (17:17 +0100)
commit44b111b519160e33fdc41eadb39af86a24707edf
treec69d9b0022c410fbdb484c71181498bad9db2581
parent64be4c1c2428e148de6081af235e2418e6a66dda
x86: Add NumaChip support

Adds support for Numascale NumaChip large-SMP systems. It is
needed to enable the booting of more than ~168 cores.

v2:
 - [Steffen] enumerate only accessible northbridges
 - [Daniel] rediffed and validated against 3.1-rc10

v3:
 - [Daniel] use x86_init core numbering override
 - [Daniel] cleanups as per feedback

v4:
 - [Daniel] use updated x86_cpuinit override

v5:
 - drop disabling interrupts locally, as ISR write is atomic; drop delay
 - added read-mostly annotations where appropriate
 - require CONFIG_SMP, so drop conditional path

Workload tested on 96 cores/16 sockets.

Signed-off-by: Steffen Persvold <sp@numascale.com>
Signed-off-by: Daniel J Blueman <daniel@numascale-asia.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Link: http://lkml.kernel.org/r/1323101246-2400-1-git-send-email-daniel@numascale-asia.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/Kconfig
arch/x86/include/asm/numachip/numachip_csr.h [new file with mode: 0644]
arch/x86/kernel/apic/Makefile
arch/x86/kernel/apic/apic_numachip.c [new file with mode: 0644]