riscv: add missing vdso_install target

[ Upstream commit f157d411a9eb170d2ee6b766da7a381962017cc9 ]

Building kernel 4.20 for Fedora as RPM fails, because riscv is missing
vdso_install target in arch/riscv/Makefile.

Signed-off-by: David Abdurachmanov <david.abdurachmanov@gmail.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
index 61ec424..110be14 100644 (file)
--- a/arch/riscv/Makefile
+++ b/arch/riscv/Makefile
@@ -82,4 +82,8 @@ core-y += arch/riscv/kernel/ arch/riscv/mm/
 
 libs-y += arch/riscv/lib/
 
+PHONY += vdso_install
+vdso_install:
+       $(Q)$(MAKE) $(build)=arch/riscv/kernel/vdso $@
+
 all: vmlinux