zhenzhong.duan@oracle.com
2011-Oct-28 05:28 UTC
[Xen-devel] [PATCH] enable pvhvm vcpu placement in kernel
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@oracle.com>
---
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();
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
Konrad Rzeszutek Wilk
2011-Nov-08 16:48 UTC
[Xen-devel] Re: [PATCH] enable pvhvm vcpu placement in kernel
On Thu, Oct 27, 2011 at 10:28:59PM -0700, zhenzhong.duan@oracle.com wrote:> pvhvm running with more than 32 vcpus and pv_irq/pv_time enabled > need vcpu placement to work, or else it will softlockup.Stefano?> > Signed-off-by: Zhenzhong Duan <zhenzhong.duan@oracle.com> > --- > 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();_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Stefano Stabellini
2011-Nov-08 17:08 UTC
[Xen-devel] Re: [PATCH] enable pvhvm vcpu placement in kernel
On Tue, 8 Nov 2011, Konrad Rzeszutek Wilk wrote:> On Thu, Oct 27, 2011 at 10:28:59PM -0700, zhenzhong.duan@oracle.com wrote: > > pvhvm running with more than 32 vcpus and pv_irq/pv_time enabled > > need vcpu placement to work, or else it will softlockup. > > Stefano?Ack.> > > > Signed-off-by: Zhenzhong Duan <zhenzhong.duan@oracle.com> > > --- > > 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(); >_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel