linux-kernel - [PATCH] KVM: arm64: fix __kvm_host_psci_cpu

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Date:   Mon, 24 Jul 2023 14:18:42 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     Marc Zyngier <maz@...nel.org>,
        Oliver Upton <oliver.upton@...ux.dev>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Mostafa Saleh <smostafa@...gle.com>
Cc:     Arnd Bergmann <arnd@...db.de>, James Morse <james.morse@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Zenghui Yu <yuzenghui@...wei.com>,
        Fuad Tabba <tabba@...gle.com>,
        Ricardo Koller <ricarkol@...gle.com>,
        Quentin Perret <qperret@...gle.com>,
        Kalesh Singh <kaleshsingh@...gle.com>,
        linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: [PATCH] KVM: arm64: fix __kvm_host_psci_cpu_entry() prototype

From: Arnd Bergmann <arnd@...db.de>

The kvm_host_psci_cpu_entry() function was renamed in order to add a wrapper around
it, but the prototype did not change, so now the missing-prototype warning came
back in W=1 builds:

arch/arm64/kvm/hyp/nvhe/psci-relay.c:203:28: error: no previous prototype for function '__kvm_host_psci_cpu_entry' [-Werror,-Wmissing-prototypes]
asmlinkage void __noreturn __kvm_host_psci_cpu_entry(bool is_cpu_on)

Fixes: dcf89d1111995 ("KVM: arm64: Add missing BTI instructions")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 arch/arm64/include/asm/kvm_asm.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/include/asm/kvm_asm.h b/arch/arm64/include/asm/kvm_asm.h
index 7d170aaa2db41..24e28bb2d95b6 100644
--- a/arch/arm64/include/asm/kvm_asm.h
+++ b/arch/arm64/include/asm/kvm_asm.h
@@ -278,7 +278,7 @@ asmlinkage void __noreturn hyp_panic_bad_stack(void);
 asmlinkage void kvm_unexpected_el2_exception(void);
 struct kvm_cpu_context;
 void handle_trap(struct kvm_cpu_context *host_ctxt);
-asmlinkage void __noreturn kvm_host_psci_cpu_entry(bool is_cpu_on);
+asmlinkage void __noreturn __kvm_host_psci_cpu_entry(bool is_cpu_on);
 void __noreturn __pkvm_init_finalise(void);
 void kvm_nvhe_prepare_backtrace(unsigned long fp, unsigned long pc);
 void kvm_patch_vector_branch(struct alt_instr *alt,
-- 
2.39.2