arm64: uaccess: Implement *_flushcache variants
Implement the set of copy functions with guarantees of a clean cache
upon completion necessary to support the pmem driver.
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 0b0576a..e43a63b 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -963,6 +963,7 @@
config ARM64_PMEM
bool "Enable support for persistent memory"
select ARCH_HAS_PMEM_API
+ select ARCH_HAS_UACCESS_FLUSHCACHE
help
Say Y to enable support for the persistent memory API based on the
ARMv8.2 DCPoP feature.
