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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
..
Kconfig powerpc/powernv: Enable POWER8 doorbell IPIs 2014-06-11 17:05:12 +10:00
Makefile powerpc/pseries/cpuidle: Move processor_idle.c to drivers/cpuidle. 2014-01-29 17:02:22 +11:00
cmm.c powerpc: Delete non-required instances of include <linux/init.h> 2014-01-15 13:46:44 +11:00
dlpar.c of: Make device nodes kobjects so they show up in sysfs 2014-03-11 20:48:26 +00:00
dtl.c powerpc: Delete non-required instances of include <linux/init.h> 2014-01-15 13:46:44 +11:00
eeh_pseries.c powerpc/eeh: Make the delay for PE reset unified 2014-04-28 17:34:48 +10:00
event_sources.c of/irq: simplify args to irq_create_of_mapping 2013-10-24 11:42:57 +01:00
firmware.c powerpc/pseries: Update CPU maps when device tree is updated 2013-04-26 16:08:23 +10:00
hotplug-cpu.c powerpc: Fix Oops in rtas_stop_self() 2014-04-28 13:08:47 +10:00
hotplug-memory.c powerpc: Allow ppc_md platform hook to override memory_block_size_bytes 2014-06-05 13:20:39 +10:00
hvCall.S powerpc/pseries: hcall functions are exported to modules, need _GLOBAL_TOC() 2014-06-05 13:21:28 +10:00
hvCall_inst.c new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
hvconsole.c pseries: Move plpar_wrapper.h to powerpc common include/asm location. 2013-08-27 14:43:05 +10:00
hvcserver.c powerpc/pseries/hvcserver: Fix strncpy buffer limit in location code 2013-03-05 16:56:27 +11:00
io_event_irq.c powerpc/le: Enable RTAS events support 2014-04-07 10:33:12 +10:00
iommu.c Revert "pseries/iommu: Remove DDW on kexec" 2014-01-15 13:46:45 +11:00
kexec.c pseries: Move plpar_wrapper.h to powerpc common include/asm location. 2013-08-27 14:43:05 +10:00
lpar.c powerpc/mm: Use HPTE constants when updating hpte bits 2013-12-09 11:40:27 +11:00
lparcfg.c powerpc/pseries: Fix endian issues in /proc/ppc64/lparcfg 2013-12-13 15:48:35 +11:00
mobility.c powerpc/pseries: Device tree should only be updated once after suspend/migrate 2014-03-07 15:54:49 +11:00
msi.c powerpc/pseries: Fix endian issues in MSI code 2013-12-13 15:48:38 +11:00
nvram.c powerpc: Convert last uses of __FUNCTION__ to __func__ 2014-04-09 12:53:32 +10:00
offline_states.h powerpc/smp: soft-replugged CPUs must go back to start_secondary 2011-04-01 15:37:09 +11:00
pci.c powerpc/pseries: Add Gen3 definitions for PCIE link speed 2014-02-17 11:19:35 +11:00
pci_dlpar.c powerpc/PCI: Use list_for_each_entry() for bus traversal 2014-02-14 11:20:51 -07:00
power.c [POWERPC] Fix warning in pseries/power.c 2008-02-20 13:33:37 +11:00
pseries.h powerpc: Allow ppc_md platform hook to override memory_block_size_bytes 2014-06-05 13:20:39 +10:00
pseries_energy.c powerpc: Fix a number of sparse warnings 2013-08-14 11:50:24 +10:00
ras.c powerpc/le: Enable RTAS events support 2014-04-07 10:33:12 +10:00
reconfig.c of: Make device nodes kobjects so they show up in sysfs 2014-03-11 20:48:26 +00:00
rng.c powerpc/pseries: Fix SMP=n build of rng.c 2013-11-21 10:33:45 +11:00
scanlog.c ppc: Clean up scanlog 2013-05-01 17:29:45 -04:00
setup.c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2014-06-10 18:54:22 -07:00
smp.c powerpc: Fix SMP issues with ppc64le ABIv2 2014-04-23 10:05:26 +10:00
suspend.c powerpc/pseries: Expose in kernel device tree update to drmgr 2014-03-07 15:54:50 +11:00