FAILED: Patch "riscv: vdso: Prevent the compiler from inserting calls to memset()" failed to apply to v5.4-stable tree

The patch below does not apply to the v5.4-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

Thanks,
Sasha

------------------ original commit in Linus's tree ------------------

From bf40167d54d55d4b54d0103713d86a8638fb9290 Mon Sep 17 00:00:00 2001
From: Alexandre Ghiti <[email protected]>
Date: Wed, 16 Oct 2024 10:36:24 +0200
Subject: [PATCH] riscv: vdso: Prevent the compiler from inserting calls to
memset()

The compiler is smart enough to insert a call to memset() in riscv_vdso_get_cpus(), which generates a dynamic relocation.

So prevent this by using -fno-builtin option.

---
 arch/riscv/kernel/vdso/Makefile | 1 +
 1 file changed, 1 insertion(+)

index 960feb1526caa..3f1c4b2d0b064 100644
@@ -18,6 +18,7 @@ obj-vdso = $(patsubst %, %.o, $(vdso-syms)) note.o
 
 ccflags-y := -fno-stack-protector
 ccflags-y += -DDISABLE_BRANCH_PROFILING
+ccflags-y += -fno-builtin
 
 ifneq ($(c-gettimeofday-y),)
   CFLAGS_vgettimeofday.o += -fPIC -include $(c-gettimeofday-y)

2.43.0