tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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x86/um: fix vDSO installation

The generic vDSO installation logic used by 'make vdso_install' requires
that $(vdso-install-y) is defined by the top-level architecture Makefile
and that it contains a path relative to the root of the tree.
For UML neither of these is satisfied.

Move the definition of $(vdso-install-y) to a place which is included by
the arch/um/Makefile and use the full relative path.

Fixes: f1c2bb8b9964 ("um: implement a x86_64 vDSO")
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://patch.msgid.link/20260318-um-vdso-install-v1-1-26a4ca5c4210@weissschuh.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

authored by

Thomas Weißschuh and committed by
Johannes Berg d1895c15 92d5c5c0

+2 -2
+2
arch/x86/Makefile.um
··· 60 60 LINK-$(CONFIG_LD_SCRIPT_DYN_RPATH) += -Wl,-rpath,/lib64 61 61 LINK-y += -m64 62 62 63 + vdso-install-y += arch/x86/um/vdso/vdso.so.dbg 64 + 63 65 endif
-2
arch/x86/um/vdso/Makefile
··· 3 3 # Building vDSO images for x86. 4 4 # 5 5 6 - vdso-install-y += vdso.so 7 - 8 6 # files to link into the vdso 9 7 vobjs-y := vdso-note.o um_vdso.o 10 8