From: Joel Stanley Date: Wed, 10 Oct 2018 02:45:22 +0000 (+1030) Subject: powerpc/boot: Disable vector instructions X-Git-Tag: v4.20-rc1~97^2~117 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=e8e132e6885962582784b6fa16a80d07ea739c0f;p=linux.git powerpc/boot: Disable vector instructions 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 --- diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index 5d5ab6ee48e0..a90197f90149 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