The commit 8221c1370056 ("svm: Manage vcpu load/unload when enable AVIC")
introduces a build error due to implicit function declaration
with#ifdef CONFIG_X86_32 and #ifndef CONFIG_X86_LOCAL_APIC.
with Kbuild test robot config file (i386-randconfig-x0-06121009).
This patch fixes the issue by using the default_cpu_present_to_apicid(),
adding necessary function declaration, and exporting the symbol.
Reported-by: kbuild test robot <fengguang.wu@xxxxxxxxx>
Fixes: commit 8221c1370056 ("svm: Manage vcpu load/unload when enable AVIC")
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@xxxxxxx>
---
arch/x86/include/asm/apic.h | 5 +++++
arch/x86/kernel/setup.c | 1 +
arch/x86/kvm/svm.c | 6 +++---
3 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h
index bc27611..beb1d4a 100644
--- a/arch/x86/include/asm/apic.h
+++ b/arch/x86/include/asm/apic.h
@@ -631,6 +631,11 @@ extern int default_cpu_present_to_apicid(int mps_cpu);
extern int default_check_phys_apicid_present(int phys_apicid);
#endif
+#else /* CONFIG_X86_LOCAL_APIC */
+static inline int default_cpu_present_to_apicid(int mps_cpu)
+{
+ return BAD_APICID;
+}
#endif /* CONFIG_X86_LOCAL_APIC */
extern void irq_enter(void);
extern void irq_exit(void);
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index c4e7b39..90168be 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -137,6 +137,7 @@ int default_cpu_present_to_apicid(int mps_cpu)
{
return __default_cpu_present_to_apicid(mps_cpu);
}
+EXPORT_SYMBOL_GPL(default_cpu_present_to_apicid);
int default_check_phys_apicid_present(int phys_apicid)
{
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 5b12438..803351a 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -1402,7 +1402,7 @@ avic_update_iommu(struct kvm_vcpu *vcpu, int cpu, phys_addr_t pa, bool r)
static void avic_set_running(struct kvm_vcpu *vcpu, bool is_run)
{
u64 entry;
- int h_physical_id = __default_cpu_present_to_apicid(vcpu->cpu);
+ int h_physical_id = default_cpu_present_to_apicid(vcpu->cpu);
struct vcpu_svm *svm = to_svm(vcpu);
if (!kvm_vcpu_apicv_active(vcpu))
@@ -1434,7 +1434,7 @@ static void avic_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
{
u64 entry;
/* ID = 0xff (broadcast), ID > 0xff (reserved) */
- int h_physical_id = __default_cpu_present_to_apicid(cpu);
+ int h_physical_id = default_cpu_present_to_apicid(cpu);
struct vcpu_svm *svm = to_svm(vcpu);
if (!kvm_vcpu_apicv_active(vcpu))
@@ -4328,7 +4328,7 @@ static void svm_deliver_avic_intr(struct kvm_vcpu *vcpu, int vec)
if (avic_vcpu_is_running(vcpu))
wrmsrl(SVM_AVIC_DOORBELL,
- __default_cpu_present_to_apicid(vcpu->cpu));
+ default_cpu_present_to_apicid(vcpu->cpu));
else
kvm_vcpu_wake_up(vcpu);
}
--
1.9.1
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