linux/arch/arm64
Catalin Marinas ee6a7fce8e arm64: Remove I-cache invalidation from flush_cache_range()
The flush_cache_range() function (similarly for flush_cache_page()) is
called when the kernel is changing an existing VA->PA mapping range to
either a new PA or to different attributes. Since ARMv8 has PIPT-like
D-caches, this function does not need to perform any D-cache
maintenance. The I-cache maintenance is already handled via set_pte_at()
and flush_cache_range() cannot anyway guarantee that there are no cache
lines left after invalidation due to the speculative loads.

This patch makes flush_cache_range() a no-op.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2016-11-23 18:05:52 +00:00
..
boot Correct regulator handling on Rockchip arm64 boards to make 2016-10-29 11:09:37 -07:00
configs arm64: Enable HIBERNATION in defconfig 2016-11-23 18:04:44 +00:00
crypto crypto: arm64/aes-ctr - fix NULL dereference in tail processing 2016-09-13 18:44:59 +08:00
include arm64: Remove I-cache invalidation from flush_cache_range() 2016-11-23 18:05:52 +00:00
kernel arm64: Disable TTBR0_EL1 during normal kernel execution 2016-11-21 18:48:54 +00:00
kvm arm64: Support systems without FP/ASIMD 2016-11-16 18:05:10 +00:00
lib arm64: Factor out PAN enabling/disabling into separate uaccess_* macros 2016-11-21 17:33:47 +00:00
mm arm64: Remove I-cache invalidation from flush_cache_range() 2016-11-23 18:05:52 +00:00
net arm64: bpf: optimize LD_ABS, LD_IND 2016-06-10 23:11:50 -07:00
xen arm64: xen: Enable user access before a privcmd hvc call 2016-11-21 18:48:55 +00:00
Kconfig arm64: Enable CONFIG_ARM64_SW_TTBR0_PAN 2016-11-21 18:48:55 +00:00
Kconfig.debug arm64: dump: Add checking for writable and exectuable pages 2016-11-07 18:15:04 +00:00
Kconfig.platforms arm64: uniphier: select ARCH_HAS_RESET_CONTROLLER 2016-10-22 18:25:52 +09:00
Makefile arm64: kernel: force ET_DYN ELF type for CONFIG_RELOCATABLE=y 2016-10-20 11:37:25 +01:00