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| author | Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2010-12-02 17:55:10 +0000 |
|---|---|---|
| committer | Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2011-02-25 16:43:06 +0000 |
| commit | 99bbb3a84a99cd04ab16b998b20f01a72cfa9f4f (patch) | |
| tree | 9ee6e3994e7fee1f3e4e5070c46673b940499daa /arch/x86/xen/enlighten.c | |
| parent | 53d5522cad291a0e93a385e0594b6aea6b54a071 (diff) | |
| download | linux-99bbb3a84a99cd04ab16b998b20f01a72cfa9f4f.tar.gz linux-99bbb3a84a99cd04ab16b998b20f01a72cfa9f4f.tar.bz2 linux-99bbb3a84a99cd04ab16b998b20f01a72cfa9f4f.zip | |
xen: PV on HVM: support PV spinlocks and IPIs
Initialize PV spinlocks on boot CPU right after native_smp_prepare_cpus
(that switch to APIC mode and initialize APIC routing); on secondary
CPUs on CPU_UP_PREPARE.
Enable the usage of event channels to send and receive IPIs when
running as a PV on HVM guest.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Diffstat (limited to 'arch/x86/xen/enlighten.c')
| -rw-r--r-- | arch/x86/xen/enlighten.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 2f67e2ea222e..fe02574789c5 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -1330,6 +1330,8 @@ static int __cpuinit xen_hvm_cpu_notify(struct notifier_block *self, switch (action) { case CPU_UP_PREPARE: per_cpu(xen_vcpu, cpu) = &HYPERVISOR_shared_info->vcpu_info[cpu]; + if (xen_have_vector_callback) + xen_init_lock_cpu(cpu); break; default: break; @@ -1354,6 +1356,7 @@ static void __init xen_hvm_guest_init(void) if (xen_feature(XENFEAT_hvm_callback_vector)) xen_have_vector_callback = 1; + xen_hvm_smp_init(); register_cpu_notifier(&xen_hvm_cpu_notifier); xen_unplug_emulated_devices(); have_vcpu_info_placement = 0; |