[Xen-devel] [PATCH] enable pvhvm vcpu placement in kernel

[zhenzhong.duan@xxxxxxxxxx]

pvhvm running with more than 32 vcpus and pv_irq/pv_time enabled 
need vcpu placement to work, or else it will softlockup.

Signed-off-by: Zhenzhong Duan <zhenzhong.duan@xxxxxxxxxx>
---
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index da8afd5..1f92865 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1356,7 +1356,7 @@ static int __cpuinit xen_hvm_cpu_notify(struct 
notifier_block *self,
        int cpu = (long)hcpu;
        switch (action) {
        case CPU_UP_PREPARE:
-               per_cpu(xen_vcpu, cpu) = 
&HYPERVISOR_shared_info->vcpu_info[cpu];
+               xen_vcpu_setup(cpu);
                if (xen_have_vector_callback)
                        xen_init_lock_cpu(cpu);
                break;
@@ -1386,7 +1386,6 @@ static void __init xen_hvm_guest_init(void)
        xen_hvm_smp_init();
        register_cpu_notifier(&xen_hvm_cpu_notifier);
        xen_unplug_emulated_devices();
-       have_vcpu_info_placement = 0;
        x86_init.irqs.intr_init = xen_init_IRQ;
        xen_hvm_init_time_ops();
        xen_hvm_init_mmu_ops();

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