From: Joel Stanley joel@jms.id.au
[ 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 joel@jms.id.au Signed-off-by: Michael Ellerman mpe@ellerman.id.au Signed-off-by: Sasha Levin sashal@kernel.org --- 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 25e3184f11f78..7d5ddf53750ce 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