arm64: vdso32: rename 32-bit debug vdso to vdso32.so.dbg

'make vdso_install' renames arch/arm64/kernel/vdso32/vdso.so.dbg to
vdso32.so during installation, which allows 64-bit and 32-bit vdso
files to be installed in the same directory.

However, arm64 is the only architecture that requires this renaming.

To simplify the vdso_install logic, rename the in-tree vdso file so
its base name matches the installed file name.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Link: https://lore.kernel.org/r/20231117125620.1058300-1-masahiroy@kernel.orgSigned-off-by: Will Deacon <will@kernel.org>

arch/arm64/Makefile

@@ -200,7 +200,7 @@ endif
 endif
 
 vdso-install-y				+= arch/arm64/kernel/vdso/vdso.so.dbg
-vdso-install-$(CONFIG_COMPAT_VDSO)	+= arch/arm64/kernel/vdso32/vdso.so.dbg:vdso32.so
+vdso-install-$(CONFIG_COMPAT_VDSO)	+= arch/arm64/kernel/vdso32/vdso32.so.dbg
 
 include $(srctree)/scripts/Makefile.defconf
 

arch/arm64/kernel/vdso32/Makefile

@@ -118,7 +118,7 @@ endif
 VDSO_CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE) -Os
 
 # Build rules
-targets := $(c-obj-vdso) $(c-obj-vdso-gettimeofday) $(asm-obj-vdso) vdso.so vdso.so.dbg vdso.so.raw
+targets := $(c-obj-vdso) $(c-obj-vdso-gettimeofday) $(asm-obj-vdso) vdso.so vdso32.so.dbg vdso.so.raw
 c-obj-vdso := $(addprefix $(obj)/, $(c-obj-vdso))
 c-obj-vdso-gettimeofday := $(addprefix $(obj)/, $(c-obj-vdso-gettimeofday))
 asm-obj-vdso := $(addprefix $(obj)/, $(asm-obj-vdso))
@@ -127,15 +127,15 @@ obj-vdso := $(c-obj-vdso) $(c-obj-vdso-gettimeofday) $(asm-obj-vdso)
 targets += vdso.lds
 CPPFLAGS_vdso.lds += -P -C -U$(ARCH)
 
-include/generated/vdso32-offsets.h: $(obj)/vdso.so.dbg FORCE
+include/generated/vdso32-offsets.h: $(obj)/vdso32.so.dbg FORCE
 	$(call if_changed,vdsosym)
 
 # Strip rule for vdso.so
 $(obj)/vdso.so: OBJCOPYFLAGS := -S
-$(obj)/vdso.so: $(obj)/vdso.so.dbg FORCE
+$(obj)/vdso.so: $(obj)/vdso32.so.dbg FORCE
 	$(call if_changed,objcopy)
 
-$(obj)/vdso.so.dbg: $(obj)/vdso.so.raw $(obj)/$(munge) FORCE
+$(obj)/vdso32.so.dbg: $(obj)/vdso.so.raw $(obj)/$(munge) FORCE
 	$(call if_changed,vdsomunge)
 
 # Link rule for the .so file, .lds has to be first