linux-kernel - [PATCH 5.14 11/30] KVM: arm64: nvhe: Fix missing FORCE for hyp-reloc.S build rule

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Date:   Thu, 14 Oct 2021 16:54:16 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, David Brazdil <dbrazdil@...gle.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Zenghui Yu <yuzenghui@...wei.com>,
        Marc Zyngier <maz@...nel.org>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.14 11/30] KVM: arm64: nvhe: Fix missing FORCE for hyp-reloc.S build rule

From: Zenghui Yu <yuzenghui@...wei.com>

[ Upstream commit a49b50a3c1c3226d26e1dd11e8b763f27e477623 ]

Add FORCE so that if_changed can detect the command line change.

We'll otherwise see a compilation warning since commit e1f86d7b4b2a
("kbuild: warn if FORCE is missing for if_changed(_dep,_rule) and
filechk").

arch/arm64/kvm/hyp/nvhe/Makefile:58: FORCE prerequisite is missing

Cc: David Brazdil <dbrazdil@...gle.com>
Cc: Masahiro Yamada <masahiroy@...nel.org>
Signed-off-by: Zenghui Yu <yuzenghui@...wei.com>
Signed-off-by: Marc Zyngier <maz@...nel.org>
Link: https://lore.kernel.org/r/20210907052137.1059-1-yuzenghui@huawei.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/arm64/kvm/hyp/nvhe/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/kvm/hyp/nvhe/Makefile b/arch/arm64/kvm/hyp/nvhe/Makefile
index 5df6193fc430..8d741f71377f 100644
--- a/arch/arm64/kvm/hyp/nvhe/Makefile
+++ b/arch/arm64/kvm/hyp/nvhe/Makefile
@@ -54,7 +54,7 @@ $(obj)/kvm_nvhe.tmp.o: $(obj)/hyp.lds $(addprefix $(obj)/,$(hyp-obj)) FORCE
 #    runtime. Because the hypervisor is part of the kernel binary, relocations
 #    produce a kernel VA. We enumerate relocations targeting hyp at build time
 #    and convert the kernel VAs at those positions to hyp VAs.
-$(obj)/hyp-reloc.S: $(obj)/kvm_nvhe.tmp.o $(obj)/gen-hyprel
+$(obj)/hyp-reloc.S: $(obj)/kvm_nvhe.tmp.o $(obj)/gen-hyprel FORCE
 	$(call if_changed,hyprel)
 
 # 5) Compile hyp-reloc.S and link it into the existing partially linked object.
-- 
2.33.0