linux/arch/powerpc
Suresh Warrier 31639c77e0 powerpc/smp: Add smp_muxed_ipi_set_message
smp_muxed_ipi_message_pass() invokes smp_ops->cause_ipi, which
uses an ioremapped address to access registers on the XICS
interrupt controller to cause the IPI. Because of this real
mode callers cannot call smp_muxed_ipi_message_pass() for IPI
messaging.

This patch creates a separate function smp_muxed_ipi_set_message
just to set the IPI message without the cause_ipi routine.
After calling this function to set the IPI message, real
mode callers must cause the IPI by writing to the XICS registers
directly.

As part of this, we also change smp_muxed_ipi_message_pass
to call smp_muxed_ipi_set_message to set the message instead
of doing it directly inside the routine.

Signed-off-by: Suresh Warrier <warrier@linux.vnet.ibm.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2016-02-29 16:25:06 +11:00
..
boot powerpc updates for 4.5 2016-01-15 13:18:47 -08:00
configs powerpc/85xx: Enable TWR_P102x in mpc85xx_basic_defconfig 2015-12-22 18:23:21 -06:00
crypto powerpc: Create disable_kernel_{fp,altivec,vsx,spe}() 2015-12-01 13:52:25 +11:00
include powerpc/smp: Add smp_muxed_ipi_set_message 2016-02-29 16:25:06 +11:00
kernel powerpc/smp: Add smp_muxed_ipi_set_message 2016-02-29 16:25:06 +11:00
kvm KVM: PPC: Add support for multiple-TCE hcalls 2016-02-16 13:44:26 +11:00
lib powerpc: Create disable_kernel_{fp,altivec,vsx,spe}() 2015-12-01 13:52:25 +11:00
math-emu
mm powerpc: Make vmalloc_to_phys() public 2016-02-16 13:44:26 +11:00
net net: filter: make JITs zero A for SKF_AD_ALU_XOR_X 2016-01-06 00:43:52 -05:00
oprofile powerpc: Remove mtmsrd(), use existing mtmsr() 2015-07-13 15:47:28 +10:00
perf powerpc: Make vmalloc_to_phys() public 2016-02-16 13:44:26 +11:00
platforms wrappers for ->i_mutex access 2016-01-22 18:04:28 -05:00
sysdev mm, dax, pmem: introduce pfn_t 2016-01-15 17:56:32 -08:00
xmon powerpc: enable UBSAN support 2016-01-20 17:09:18 -08:00
Kconfig dma-mapping: always provide the dma_map_ops based implementation 2016-01-20 17:09:18 -08:00
Kconfig.debug powerpc updates for 4.5 2016-01-15 13:18:47 -08:00
Makefile powerpc/cell: Drop CONFIG_TUNE_CELL in favour of CONFIG_CELL_CPU 2015-10-19 19:51:18 +11:00
relocs_check.sh powerpc: Convert relocs_check to a shell script using grep 2015-03-23 14:47:39 +11:00