From: "Pali Rohár" <pali@kernel.org>
To: Michael Ellerman <mpe@ellerman.id.au>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: [PATCH] powerpc/boot: Explicitly disable usage of SPE instructions
Date: Sat, 27 Aug 2022 15:44:54 +0200 [thread overview]
Message-ID: <20220827134454.17365-1-pali@kernel.org> (raw)
uImage boot wrapper should not use SPE instructions, like kernel itself.
Boot wrapper has already disabled Altivec and VSX instructions but not SPE.
Options -mno-spe and -mspe=no already set when compilation of kernel, but
not when compiling uImage wrapper yet. Fix it.
Cc: stable@vger.kernel.org
Signed-off-by: Pali Rohár <pali@kernel.org>
---
arch/powerpc/boot/Makefile | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index f56a5f90a5d8..2247374c4e70 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -34,6 +34,7 @@ endif
BOOTCFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
-fno-strict-aliasing -O2 -msoft-float -mno-altivec -mno-vsx \
+ $(call cc-option,-mno-spe) $(call cc-option,-mspe=no) \
-pipe -fomit-frame-pointer -fno-builtin -fPIC -nostdinc \
$(LINUXINCLUDE)
--
2.20.1
next reply other threads:[~2022-08-27 13:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-27 13:44 Pali Rohár [this message]
2022-10-04 13:25 ` [PATCH] powerpc/boot: Explicitly disable usage of SPE instructions Michael Ellerman
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