linux-kernel - [PATCH 5/5] raid6: test: only check for Altivec if building on powerpc hosts

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Message-Id: <20230731104911.411964-6-kernel@xen0n.name>
Date:   Mon, 31 Jul 2023 18:49:11 +0800
From:   WANG Xuerui <kernel@...0n.name>
To:     Song Liu <song@...nel.org>
Cc:     linux-raid@...r.kernel.org, linux-kernel@...r.kernel.org,
        WANG Xuerui <git@...0n.name>
Subject: [PATCH 5/5] raid6: test: only check for Altivec if building on powerpc hosts

From: WANG Xuerui <git@...0n.name>

Altivec is only available for powerpc hosts, so only check for its
availability when the host is powerpc, to avoid error messages being
shown on architectures other than x86, arm or powerpc.

Signed-off-by: WANG Xuerui <git@...0n.name>
---
 lib/raid6/test/Makefile | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/lib/raid6/test/Makefile b/lib/raid6/test/Makefile
index 143cda60faa12..1f693ea3b980c 100644
--- a/lib/raid6/test/Makefile
+++ b/lib/raid6/test/Makefile
@@ -35,6 +35,12 @@ ifeq ($(ARCH),aarch64)
         HAS_NEON = yes
 endif
 
+ifeq ($(findstring ppc,$(ARCH)),ppc)
+        CFLAGS += -I../../../arch/powerpc/include
+        HAS_ALTIVEC := $(shell printf '$(pound)include <altivec.h>\nvector int a;\n' |\
+                         gcc -c -x c - >/dev/null && rm ./-.o && echo yes)
+endif
+
 ifeq ($(IS_X86),yes)
         OBJS   += mmx.o sse1.o sse2.o avx2.o recov_ssse3.o recov_avx2.o avx512.o recov_avx512.o
         CFLAGS += -DCONFIG_X86
@@ -44,15 +50,10 @@ ifeq ($(IS_X86),yes)
 else ifeq ($(HAS_NEON),yes)
         OBJS   += neon.o neon1.o neon2.o neon4.o neon8.o recov_neon.o recov_neon_inner.o
         CFLAGS += -DCONFIG_KERNEL_MODE_NEON=1
-else
-        HAS_ALTIVEC := $(shell printf '$(pound)include <altivec.h>\nvector int a;\n' |\
-                         gcc -c -x c - >/dev/null && rm ./-.o && echo yes)
-        ifeq ($(HAS_ALTIVEC),yes)
-                CFLAGS += -I../../../arch/powerpc/include
-                CFLAGS += -DCONFIG_ALTIVEC
-                OBJS += altivec1.o altivec2.o altivec4.o altivec8.o \
-                        vpermxor1.o vpermxor2.o vpermxor4.o vpermxor8.o
-        endif
+else ifeq ($(HAS_ALTIVEC),yes)
+        CFLAGS += -DCONFIG_ALTIVEC
+        OBJS += altivec1.o altivec2.o altivec4.o altivec8.o \
+                vpermxor1.o vpermxor2.o vpermxor4.o vpermxor8.o
 endif
 
 .c.o:
-- 
2.40.0