From 16e4657a1d2542dba2fce2c91ace742e2e47f6e7 Mon Sep 17 00:00:00 2001 From: Joel Stanley Date: Wed, 10 Oct 2018 13:15:22 +1030 Subject: [PATCH] powerpc/boot: Disable vector instructions [ Upstream commit e8e132e6885962582784b6fa16a80d07ea739c0f ] This will avoid auto-vectorisation when building with higher optimisation levels. We don't know if the machine can support VSX and even if it's present it's probably not going to be enabled at this point in boot. These flag were both added prior to GCC 4.6 which is the minimum compiler version supported by upstream, thanks to Segher for the details. Signed-off-by: Joel Stanley Signed-off-by: Michael Ellerman Signed-off-by: Sasha Levin --- arch/powerpc/boot/Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index 25e3184f11f7..7d5ddf53750c 100644 --- a/arch/powerpc/boot/Makefile +++ b/arch/powerpc/boot/Makefile @@ -32,8 +32,8 @@ else endif BOOTCFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ - -fno-strict-aliasing -Os -msoft-float -pipe \ - -fomit-frame-pointer -fno-builtin -fPIC -nostdinc \ + -fno-strict-aliasing -Os -msoft-float -mno-altivec -mno-vsx \ + -pipe -fomit-frame-pointer -fno-builtin -fPIC -nostdinc \ -D$(compress-y) ifdef CONFIG_PPC64_BOOT_WRAPPER