linux_dsm_epyc7002/arch/powerpc
Christophe Leroy ad1b0122bd powerpc/32: remove a NOP from memset()
memset() is patched after initialisation to activate the
optimised part which uses cache instructions.

Today we have a 'b 2f' to skip the optimised patch, which then gets
replaced by a NOP, implying a useless cycle consumption.
As we have a 'bne 2f' just before, we could use that instruction
for the live patching, hence removing the need to have a
dedicated 'b 2f' to be replaced by a NOP.

This patch changes the 'bne 2f' by a 'b 2f'. During init, that
'b 2f' is then replaced by 'bne 2f'

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-09-01 16:42:46 +10:00
..
boot powerpc: conditionally compile platform-specific serial drivers 2017-08-31 14:26:48 +10:00
configs powerpc/configs: Enable THP and 64K for ppc64(le)_defconfig 2017-08-31 14:26:47 +10:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2017-05-02 15:53:46 -07:00
include powerpc/32: add memset16() 2017-09-01 16:42:45 +10:00
kernel powerpc/32: remove a NOP from memset() 2017-09-01 16:42:46 +10:00
kvm Merge branch 'topic/ppc-kvm' into next 2017-08-29 21:26:30 +10:00
lib powerpc/32: remove a NOP from memset() 2017-09-01 16:42:46 +10:00
math-emu Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
mm powerpc: fix location of two EXPORT_SYMBOL 2017-09-01 16:42:45 +10:00
net powerpc/bpf: Use memset32() to pre-fill traps in BPF page(s) 2017-08-17 23:04:47 +10:00
oprofile ktime: Cleanup ktime_set() usage 2016-12-25 17:21:22 +01:00
perf Merge branch 'topic/ppc-kvm' into next 2017-08-17 23:14:17 +10:00
platforms powerpc/pseries: Don't attempt to acquire drc during memory hot add for assigned lmbs 2017-08-31 20:02:23 +10:00
purgatory powerpc/asm: Convert .llong directives to .8byte 2017-08-31 14:26:47 +10:00
sysdev powerpc/xive: Fix the size of the cpumask used in xive_find_target_in_mask() 2017-08-24 15:20:18 +10:00
tools powerpc/64: Tool to check head sections location sanity 2017-05-30 14:59:51 +10:00
xmon powerpc/xmon: Add ISA v3.0 SPRs to SPR dump 2017-08-31 14:26:45 +10:00
Kconfig powerpc: Use instruction emulation infrastructure to handle alignment faults 2017-09-01 16:42:43 +10:00
Kconfig.debug powerpc/xmon: Enable disassembly files (compilation changes) 2017-02-15 20:02:42 +11:00
Makefile Merge branch 'fixes' into next 2017-08-23 22:20:10 +10:00
Makefile.postlink powerpc/64: Tool to check head sections location sanity 2017-05-30 14:59:51 +10:00