linux-kernel - [PATCH 1/2] KVM: Fix the build error

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Message-Id: <20200914091148.95654-2-lihaiwei.kernel@gmail.com>
Date:   Mon, 14 Sep 2020 17:11:47 +0800
From:   lihaiwei.kernel@...il.com
To:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org, x86@...nel.org
Cc:     pbonzini@...hat.com, sean.j.christopherson@...el.com,
        vkuznets@...hat.com, wanpengli@...cent.com, jmattson@...gle.com,
        joro@...tes.org, tglx@...utronix.de, mingo@...hat.com,
        bp@...en8.de, hpa@...or.com, lihaiwei@...cent.com,
        kernel test robot <lkp@...el.com>
Subject: [PATCH 1/2] KVM: Fix the build error

From: Haiwei Li <lihaiwei@...cent.com>

When CONFIG_SMP is not set, an build error occurs with message "error:
use of undeclared identifier 'kvm_send_ipi_mask_allbutself'"

Fixes: 0f990222108d ("KVM: Check the allocation of pv cpu mask", 2020-09-01)
Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: Haiwei Li <lihaiwei@...cent.com>
---
 arch/x86/kernel/kvm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index 1b51b727b140..7e8be0421720 100644
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -797,7 +797,9 @@ static __init int kvm_alloc_cpumask(void)
 			}
 		}
 
+#if defined(CONFIG_SMP)
 	apic->send_IPI_mask_allbutself = kvm_send_ipi_mask_allbutself;
+#endif
 	pv_ops.mmu.flush_tlb_others = kvm_flush_tlb_others;
 	return 0;
 
-- 
2.18.4