linux-kernel - [PATCH] riscv: Check that vdso does not contain any dynamic relocations

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Message-Id: <20240326113831.283025-1-alexghiti@rivosinc.com>
Date: Tue, 26 Mar 2024 12:38:31 +0100
From: Alexandre Ghiti <alexghiti@...osinc.com>
To: Vladimir Isaev <vladimir.isaev@...tacore.com>,
	Roman Artemev <roman.artemev@...tacore.com>,
	Guo Ren <guoren@...nel.org>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	linux-riscv@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Cc: Alexandre Ghiti <alexghiti@...osinc.com>
Subject: [PATCH] riscv: Check that vdso does not contain any dynamic relocations

Like other architectures, use the common cmd_vdso_check to make sure of
that.

Signed-off-by: Alexandre Ghiti <alexghiti@...osinc.com>
---
 arch/riscv/kernel/vdso/Makefile | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/arch/riscv/kernel/vdso/Makefile b/arch/riscv/kernel/vdso/Makefile
index 9b517fe1b8a8..dd4877f25928 100644
--- a/arch/riscv/kernel/vdso/Makefile
+++ b/arch/riscv/kernel/vdso/Makefile
@@ -49,7 +49,7 @@ $(obj)/vdso.o: $(obj)/vdso.so
 
 # link rule for the .so file, .lds has to be first
 $(obj)/vdso.so.dbg: $(obj)/vdso.lds $(obj-vdso) FORCE
-	$(call if_changed,vdsold)
+	$(call if_changed,vdsold_and_check)
 LDFLAGS_vdso.so.dbg = -shared -S -soname=linux-vdso.so.1 \
 	--build-id=sha1 --hash-style=both --eh-frame-hdr
 
@@ -69,7 +69,8 @@ include/generated/vdso-offsets.h: $(obj)/vdso.so.dbg FORCE
 # actual build commands
 # The DSO images are built using a special linker script
 # Make sure only to export the intended __vdso_xxx symbol offsets.
-quiet_cmd_vdsold = VDSOLD  $@
-      cmd_vdsold = $(LD) $(ld_flags) -T $(filter-out FORCE,$^) -o $@...p && \
+quiet_cmd_vdsold_and_check = VDSOLD  $@
+      cmd_vdsold_and_check = $(LD) $(ld_flags) -T $(filter-out FORCE,$^) -o $@...p && \
                    $(OBJCOPY) $(patsubst %, -G __vdso_%, $(vdso-syms)) $@...p $@ && \
-                   rm $@...p
+                   rm $@...p && \
+                   $(cmd_vdso_check)
-- 
2.39.2