This is a note to let you know that I've just added the patch titled
powerpc/64e: Fix amdgpu build on Book3E w/o AltiVec
to the 6.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powerpc-64e-fix-amdgpu-build-on-book3e-w-o-altivec.patch
and it can be found in the queue-6.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 64a3f70d017605f39bb17c03d6fb7f15348a884d
Author: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Date: Thu Oct 27 23:56:26 2022 +1100
powerpc/64e: Fix amdgpu build on Book3E w/o AltiVec
[ Upstream commit 2153fc9623e5465f503d793d4c94ad65e9ec9b5f ]
There's a build failure for Book3E without AltiVec:
Error: cc1: error: AltiVec not supported in this target
make[6]: *** [/linux/scripts/Makefile.build:250:
drivers/gpu/drm/amd/amdgpu/../display/dc/dml/display_mode_lib.o] Error 1
This happens because the amdgpu build is only gated by
PPC_LONG_DOUBLE_128, but that symbol can be enabled even though AltiVec
is disabled.
The only user of PPC_LONG_DOUBLE_128 is amdgpu, so just add a dependency
on AltiVec to that symbol to fix the build.
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20221027125626.1383092-1-mpe@xxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index cbe7bb029aec..c1d36a22de30 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -284,7 +284,7 @@ config PPC
#
config PPC_LONG_DOUBLE_128
- depends on PPC64
+ depends on PPC64 && ALTIVEC
def_bool $(success,test "$(shell,echo __LONG_DOUBLE_128__ | $(CC) -E -P -)" = 1)
config PPC_BARRIER_NOSPEC
