[tip:,x86/vdso] x86/vdso: Simplify obj-y addition
Commit Message
The following commit has been merged into the x86/vdso branch of tip:
Commit-ID: 329b77b59f83440e98d792800501e5a398806860
Gitweb: https://git.kernel.org/tip/329b77b59f83440e98d792800501e5a398806860
Author: Masahiro Yamada <masahiroy@kernel.org>
AuthorDate: Wed, 22 Nov 2023 08:56:59 +09:00
Committer: Borislav Petkov (AMD) <bp@alien8.de>
CommitterDate: Thu, 08 Feb 2024 13:22:08 +01:00
x86/vdso: Simplify obj-y addition
Add objects to obj-y in a more straightforward way.
CONFIG_X86_32 and CONFIG_IA32_EMULATION are not enabled simultaneously,
but even if they are, Kbuild graciously deduplicates obj-y entries.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20231121235701.239606-3-masahiroy@kernel.org
---
arch/x86/entry/vdso/Makefile | 16 ++++------------
1 file changed, 4 insertions(+), 12 deletions(-)
@@ -18,11 +18,6 @@ OBJECT_FILES_NON_STANDARD := y
# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
KCOV_INSTRUMENT := n
-VDSO64-$(CONFIG_X86_64) := y
-VDSOX32-$(CONFIG_X86_X32_ABI) := y
-VDSO32-$(CONFIG_X86_32) := y
-VDSO32-$(CONFIG_IA32_EMULATION) := y
-
# files to link into the vdso
vobjs-y := vdso-note.o vclock_gettime.o vgetcpu.o
vobjs32-y := vdso32/note.o vdso32/system_call.o vdso32/sigreturn.o
@@ -38,11 +33,11 @@ OBJECT_FILES_NON_STANDARD_vma.o := n
OBJECT_FILES_NON_STANDARD_extable.o := n
# vDSO images to build
-vdso_img-$(VDSO64-y) += 64
-vdso_img-$(VDSOX32-y) += x32
-vdso_img-$(VDSO32-y) += 32
+obj-$(CONFIG_X86_64) += vdso-image-64.o
+obj-$(CONFIG_X86_X32_ABI) += vdso-image-x32.o
+obj-$(CONFIG_X86_32) += vdso-image-32.o vdso32-setup.o
+obj-$(CONFIG_IA32_EMULATION) += vdso-image-32.o vdso32-setup.o
-obj-$(VDSO32-y) += vdso32-setup.o
OBJECT_FILES_NON_STANDARD_vdso32-setup.o := n
vobjs := $(foreach F,$(vobjs-y),$(obj)/$F)
@@ -53,9 +48,6 @@ $(obj)/vdso.o: $(obj)/vdso.so
targets += vdso.lds $(vobjs-y)
targets += vdso32/vdso32.lds $(vobjs32-y)
-# Build the vDSO image C files and link them in.
-vdso_img_objs := $(vdso_img-y:%=vdso-image-%.o)
-obj-y += $(vdso_img_objs)
targets += $(foreach x, 64 x32 32, vdso-image-$(x).c vdso$(x).so vdso$(x).so.dbg)
CPPFLAGS_vdso.lds += -P -C