Subject: [PATCH v7 6/7] powerpc/pmem: Avoid the barrier in flush routines

From: "Aneesh Kumar K.V" <[email-masked]>
Date: Wed, 1 Jul 2020 12:52:34 +0530

nvdimm expect the flush routines to just mark the cache clean. The barrier
that mark the store globally visible is done in nvdimm_flush().

Signed-off-by: Aneesh Kumar K.V <[email-masked]>
---
 arch/powerpc/lib/pmem.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/arch/powerpc/lib/pmem.c b/arch/powerpc/lib/pmem.c
index 5a61aaeb6930..21210fa676e5 100644
--- a/arch/powerpc/lib/pmem.c
+++ b/arch/powerpc/lib/pmem.c
@@ -19,9 +19,6 @@ static inline void __clean_pmem_range(unsigned long start, unsigned long stop)
 
 	for (i = 0; i < size >> shift; i++, addr += bytes)
 		asm volatile(PPC_DCBSTPS(%0, %1): :"i"(0), "r"(addr): "memory");
-
-
-	asm volatile(PPC_PHWSYNC ::: "memory");
 }
 
 static inline void __flush_pmem_range(unsigned long start, unsigned long stop)
@@ -34,9 +31,6 @@ static inline void __flush_pmem_range(unsigned long start, unsigned long stop)
 
 	for (i = 0; i < size >> shift; i++, addr += bytes)
 		asm volatile(PPC_DCBFPS(%0, %1): :"i"(0), "r"(addr): "memory");
-
-
-	asm volatile(PPC_PHWSYNC ::: "memory");
 }
 
 static inline void clean_pmem_range(unsigned long start, unsigned long stop)
-- 
2.26.2