This patch doesn't enable cpu hotplug under kvm, but is a prerequiste
when the feature is implemented.
Once kvm_arch_hardware_enable/disable() is properly implemented,
arm64-specific cpu notifier hook, hyp_init_cpu_notify(), will be
able to be removed and replaced by generic kvm_cpu_hotplug().
Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org>
---
arch/arm/kvm/arm.c | 9 +++++++++
arch/arm64/include/asm/kvm_host.h | 1 -
2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
index b879cf6..08804d3 100644
--- a/arch/arm/kvm/arm.c
+++ b/arch/arm/kvm/arm.c
@@ -925,6 +925,10 @@ static int hyp_init_cpu_notify(struct notifier_block *self,
if (__hyp_get_vectors() == hyp_default_vectors)
cpu_init_hyp_mode(NULL);
break;
+ case CPU_DYING:
+ case CPU_DYING_FROZEN:
+ kvm_cpu_reset(NULL);
+ break;
}
return NOTIFY_OK;
@@ -1168,6 +1172,11 @@ out_err:
return err;
}
+void kvm_arch_hardware_disable(void)
+{
+ kvm_cpu_reset(NULL);
+}
+
/* NOP: Compiling as a module not supported */
void kvm_arch_exit(void)
{
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 97f88fe..a97b2fe 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -261,7 +261,6 @@ static inline void vgic_arch_setup(const struct vgic_params *vgic)
}
}
-static inline void kvm_arch_hardware_disable(void) {}
static inline void kvm_arch_hardware_unsetup(void) {}
static inline void kvm_arch_sync_events(struct kvm *kvm) {}
static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
--
1.7.9.5
