linux/arch/powerpc/platforms
Michael Neuling d4e58e5928 powerpc/powernv: Enable POWER8 doorbell IPIs
This patch enables POWER8 doorbell IPIs on powernv.

Since doorbells can only IPI within a core, we test to see when we can use
doorbells and if not we fall back to XICS.  This also enables hypervisor
doorbells to wakeup us up from nap/sleep via the LPCR PECEDH bit.

Based on tests by Anton, the best case IPI latency between two threads dropped
from 894ns to 512ns.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-06-11 17:05:12 +10:00
..
8xx
40x
44x ppc476: Enable a linker work around for IBM errata #46 2014-05-01 08:26:34 +10:00
52xx of/fdt: update of_get_flat_dt_prop in prep for libfdt 2014-04-30 00:59:15 -05:00
82xx
83xx powerpc: Delete non-required instances of include <linux/init.h> 2014-01-15 13:46:44 +11:00
85xx powerpc/mpc85xx: Add BSC9132 QDS Support 2014-05-22 18:08:32 -05:00
86xx
512x
amigaone
cell powerpc/spufs: Remove duplicate SPUFS_CNTL_MAP_SIZE define 2014-06-11 17:03:32 +10:00
chrp of/fdt: update of_get_flat_dt_prop in prep for libfdt 2014-04-30 00:59:15 -05:00
embedded6xx powerpc/legacy_serial: Support MVME5100 UARTS with shifted registers 2014-04-28 17:36:25 +10:00
maple
pasemi powerpc: No need to use dot symbols when branching to a function 2014-04-23 10:05:16 +10:00
powermac powerpc: Delete non-required instances of include <linux/init.h> 2014-01-15 13:46:44 +11:00
powernv powerpc/powernv: Enable POWER8 doorbell IPIs 2014-06-11 17:05:12 +10:00
ps3 Merge branch 'powernv-cpuidle' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2014-04-02 13:47:29 -07:00
pseries powerpc/powernv: Enable POWER8 doorbell IPIs 2014-06-11 17:05:12 +10:00
fsl_uli1575.c
Kconfig powerpc: Remove platforms/wsp and associated pieces 2014-06-11 16:35:38 +10:00
Kconfig.cputype powerpc: Remove platforms/wsp and associated pieces 2014-06-11 16:35:38 +10:00
Makefile powerpc: Remove platforms/wsp and associated pieces 2014-06-11 16:35:38 +10:00