# \[PATCH v2 08/17\] powerpc: Add little endian variants of LWZX\_BE and STWX\_BE

- From: Christophe Leroy \<hidden\>
- Date: 2024-08-22 07:14:04 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2024/08/289633
- Thread: https://ratatoskr.run/linuxppc-dev/2024/08/289625/t.md

```text
To support getrandom in VDSO which is based on little endian storage,
add macros equivalent to LWZX_BE and STWX_BE for little endian
accesses.

Put them outside of __powerpc64__ #ifdef so that they can also be used
for PPC32.

Signed-off-by: Christophe Leroy <redacted>
---
 arch/powerpc/include/asm/asm-compat.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/powerpc/include/asm/asm-compat.h b/arch/powerpc/include/asm/asm-compat.h
index 2bc53c646ccd..6e53a80917ef 100644
--- a/arch/powerpc/include/asm/asm-compat.h
+++ b/arch/powerpc/include/asm/asm-compat.h
@@ -61,4 +61,12 @@
 
 #endif
 
+#ifdef __BIG_ENDIAN__
+#define LWZX_LE	stringify_in_c(lwbrx)
+#define STWX_LE	stringify_in_c(stwbrx)
+#else
+#define LWZX_LE	stringify_in_c(lwzx)
+#define STWX_LE	stringify_in_c(stwx)
+#endif
+
 #endif /* _ASM_POWERPC_ASM_COMPAT_H */
-- 
2.44.0


```