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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2020-09-27 09:16:33 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-12-04 01:01:17 +1100 |
| commit | 91bf695596f594e42d69d70deb2ae53cafecf77c (patch) | |
| tree | f227a7426c8e357087db461585f0d48b2969f6fb /arch/powerpc/Makefile | |
| parent | 550e6074c106e1a6fb57dfef62f0daede12d832c (diff) | |
| download | linux-stable-91bf695596f594e42d69d70deb2ae53cafecf77c.tar.gz linux-stable-91bf695596f594e42d69d70deb2ae53cafecf77c.tar.bz2 linux-stable-91bf695596f594e42d69d70deb2ae53cafecf77c.zip | |
powerpc/vdso: Retrieve sigtramp offsets at buildtime
This is copied from arm64.
Instead of using runtime generated signal trampoline offsets,
get offsets at buildtime.
If the said trampoline doesn't exist, build will fail. So no
need to check whether the trampoline exists or not in the VDSO.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/f8bfd6812c3e3678b1cdb4d55a52f9eb022b40d3.1601197618.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/Makefile')
| -rw-r--r-- | arch/powerpc/Makefile | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 86c925bfbb76..fde3dbe57bda 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -409,6 +409,21 @@ install: archclean: $(Q)$(MAKE) $(clean)=$(boot) +ifeq ($(KBUILD_EXTMOD),) +# We need to generate vdso-offsets.h before compiling certain files in kernel/. +# In order to do that, we should use the archprepare target, but we can't since +# asm-offsets.h is included in some files used to generate vdso-offsets.h, and +# asm-offsets.h is built in prepare0, for which archprepare is a dependency. +# Therefore we need to generate the header after prepare0 has been made, hence +# this hack. +prepare: vdso_prepare +vdso_prepare: prepare0 + $(if $(CONFIG_VDSO32),$(Q)$(MAKE) \ + $(build)=arch/powerpc/kernel/vdso32 include/generated/vdso32-offsets.h) + $(if $(CONFIG_PPC64),$(Q)$(MAKE) \ + $(build)=arch/powerpc/kernel/vdso64 include/generated/vdso64-offsets.h) +endif + archprepare: checkbin archheaders: |