[tip: x86/bugs] x86/vdso: Run objtool on vdso32-setup.o

[tip-bot2 for David Kaplan]

The following commit has been merged into the x86/bugs branch of tip:

Commit-ID:     b587fef124f98f3ab1322dba8e37cdff660acd8c
Gitweb:        https://git.kernel.org/tip/b587fef124f98f3ab1322dba8e37cdff660acd8c
Author:        David Kaplan <david.kaplan@xxxxxxx>
AuthorDate:    Tue, 10 Oct 2023 12:10:19 -05:00
Committer:     Borislav Petkov (AMD) <bp@xxxxxxxxx>
CommitterDate: Fri, 20 Oct 2023 12:58:27 +02:00

x86/vdso: Run objtool on vdso32-setup.o

vdso32-setup.c is part of the main kernel image and should not be
excluded from objtool.  Objtool is necessary in part for ensuring that
returns in this file are correctly patched to the appropriate return
thunk at runtime.

Signed-off-by: David Kaplan <david.kaplan@xxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Signed-off-by: Borislav Petkov (AMD) <bp@xxxxxxxxx>
Acked-by: Borislav Petkov (AMD) <bp@xxxxxxxxx>
Acked-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20231010171020.462211-3-david.kaplan@xxxxxxx
---
 arch/x86/entry/vdso/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/entry/vdso/Makefile b/arch/x86/entry/vdso/Makefile
index 6a1821b..83c0afb 100644
--- a/arch/x86/entry/vdso/Makefile
+++ b/arch/x86/entry/vdso/Makefile
@@ -42,7 +42,8 @@ vdso_img-$(VDSO64-y)		+= 64
 vdso_img-$(VDSOX32-y)		+= x32
 vdso_img-$(VDSO32-y)		+= 32
 
-obj-$(VDSO32-y)			+= vdso32-setup.o
+obj-$(VDSO32-y)				 += vdso32-setup.o
+OBJECT_FILES_NON_STANDARD_vdso32-setup.o := n
 
 vobjs := $(foreach F,$(vobjs-y),$(obj)/$F)
 vobjs32 := $(foreach F,$(vobjs32-y),$(obj)/$F)