linux-sg2042/arch/powerpc
Anton Blanchard 1b6ca2a6fe powerpc: Update DSCR on all CPUs when writing sysfs dscr_default
Writing to dscr_default in sysfs doesn't actually change the DSCR -
we rely on a context switch on each CPU to do the work. There is no
guarantee we will get a context switch in a reasonable amount of time
so fire off an IPI to force an immediate change.

This issue was found with the following test case:

http://ozlabs.org/~anton/junkcode/dscr_explicit_test.c

Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: <stable@kernel.org> # 3.0+
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-09-05 16:05:20 +10:00
..
boot powerpc/p4080ds: dts - add usb controller version info and port0 2012-08-10 07:47:02 -05:00
configs Revert "powerpc: Update g5_defconfig" 2012-08-24 20:55:55 +10:00
include/asm powerpc/powernv: Always go into nap mode when CPU is offline 2012-09-05 16:05:20 +10:00
kernel powerpc: Update DSCR on all CPUs when writing sysfs dscr_default 2012-09-05 16:05:20 +10:00
kvm ppc: e500_tlb memset clears nothing 2012-08-16 14:14:53 +02:00
lib powerpc: Fix VMX in interrupt check in POWER7 copy loops 2012-08-24 20:26:09 +10:00
math-emu powerpc/math_emu/efp: Look for errata handler when type mismatches 2011-10-06 23:36:47 -05:00
mm powerpc/vphn: Fix arch_update_cpu_topology() return value 2012-09-05 16:05:19 +10:00
net powerpc: Start using ___PPC_RA/B/S/T where necessary 2012-07-10 19:18:25 +10:00
oprofile Disintegrate asm/system.h for PowerPC 2012-03-28 18:30:02 +01:00
perf powerpc/perf: Use pmc_overflow() to detect rolled back events 2012-08-24 20:26:10 +10:00
platforms powerpc/powernv: Always go into nap mode when CPU is offline 2012-09-05 16:05:20 +10:00
sysdev powerpc/mpic_msgr: Add missing includes 2012-08-24 20:26:04 +10:00
xmon powerpc: Fixup whitespace in xmon 2012-08-24 20:26:03 +10:00
Kconfig ipc: use Kconfig options for __ARCH_WANT_[COMPAT_]IPC_PARSE_VERSION 2012-07-30 17:25:21 -07:00
Kconfig.debug powerpc: IOMMU fault injection 2012-07-10 19:18:59 +10:00
Makefile crypto: nx - move nx build to driver/crypto Makefile 2012-06-27 14:42:00 +08:00
relocs_check.pl powerpc: Process dynamic relocations for kernel 2011-12-20 10:21:08 -05:00