diff options
| -rw-r--r-- | arch/x86/include/asm/xen/events.h | 1 | ||||
| -rw-r--r-- | arch/x86/xen/enlighten.c | 13 | ||||
| -rw-r--r-- | arch/x86/xen/setup.c | 13 | ||||
| -rw-r--r-- | arch/x86/xen/smp.c | 6 | ||||
| -rw-r--r-- | drivers/xen/events.c | 11 | ||||
| -rw-r--r-- | include/xen/interface/vcpu.h | 2 |
6 files changed, 38 insertions, 8 deletions
diff --git a/arch/x86/include/asm/xen/events.h b/arch/x86/include/asm/xen/events.h index ca842f2769ef..608a79d5a466 100644 --- a/arch/x86/include/asm/xen/events.h +++ b/arch/x86/include/asm/xen/events.h @@ -7,6 +7,7 @@ enum ipi_vector { XEN_CALL_FUNCTION_SINGLE_VECTOR, XEN_SPIN_UNLOCK_VECTOR, XEN_IRQ_WORK_VECTOR, + XEN_NMI_VECTOR, XEN_NR_IPIS, }; diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 193097ef3d7d..b5a22fa7e249 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -427,8 +427,7 @@ static void __init xen_init_cpuid_mask(void) if (!xen_initial_domain()) cpuid_leaf1_edx_mask &= - ~((1 << X86_FEATURE_APIC) | /* disable local APIC */ - (1 << X86_FEATURE_ACPI)); /* disable ACPI */ + ~((1 << X86_FEATURE_ACPI)); /* disable ACPI */ cpuid_leaf1_ecx_mask &= ~(1 << (X86_FEATURE_X2APIC % 32)); @@ -735,8 +734,7 @@ static int cvt_gate_to_trap(int vector, const gate_desc *val, addr = (unsigned long)xen_int3; else if (addr == (unsigned long)stack_segment) addr = (unsigned long)xen_stack_segment; - else if (addr == (unsigned long)double_fault || - addr == (unsigned long)nmi) { + else if (addr == (unsigned long)double_fault) { /* Don't need to handle these */ return 0; #ifdef CONFIG_X86_MCE @@ -747,7 +745,12 @@ static int cvt_gate_to_trap(int vector, const gate_desc *val, */ ; #endif - } else { + } else if (addr == (unsigned long)nmi) + /* + * Use the native version as well. + */ + ; + else { /* Some other trap using IST? */ if (WARN_ON(val->ist != 0)) return 0; diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c index 056d11faef21..403f5cc5415b 100644 --- a/arch/x86/xen/setup.c +++ b/arch/x86/xen/setup.c @@ -33,6 +33,9 @@ /* These are code, but not functions. Defined in entry.S */ extern const char xen_hypervisor_callback[]; extern const char xen_failsafe_callback[]; +#ifdef CONFIG_X86_64 +extern const char nmi[]; +#endif extern void xen_sysenter_target(void); extern void xen_syscall_target(void); extern void xen_syscall32_target(void); @@ -525,7 +528,13 @@ void xen_enable_syscall(void) } #endif /* CONFIG_X86_64 */ } - +void __cpuinit xen_enable_nmi(void) +{ +#ifdef CONFIG_X86_64 + if (register_callback(CALLBACKTYPE_nmi, nmi)) + BUG(); +#endif +} void __init xen_arch_setup(void) { xen_panic_handler_init(); @@ -543,7 +552,7 @@ void __init xen_arch_setup(void) xen_enable_sysenter(); xen_enable_syscall(); - + xen_enable_nmi(); #ifdef CONFIG_ACPI if (!(xen_start_info->flags & SIF_INITDOMAIN)) { printk(KERN_INFO "ACPI in unprivileged domain disabled\n"); diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c index ca92754eb846..22759c6d309f 100644 --- a/arch/x86/xen/smp.c +++ b/arch/x86/xen/smp.c @@ -572,6 +572,12 @@ static inline int xen_map_vector(int vector) case IRQ_WORK_VECTOR: xen_vector = XEN_IRQ_WORK_VECTOR; break; +#ifdef CONFIG_X86_64 + case NMI_VECTOR: + case APIC_DM_NMI: /* Some use that instead of NMI_VECTOR */ + xen_vector = XEN_NMI_VECTOR; + break; +#endif default: xen_vector = -1; printk(KERN_ERR "xen: vector 0x%x is not implemented\n", diff --git a/drivers/xen/events.c b/drivers/xen/events.c index a58ac435a9a4..c8b9d9fc77b5 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -56,6 +56,7 @@ #include <xen/interface/hvm/params.h> #include <xen/interface/physdev.h> #include <xen/interface/sched.h> +#include <xen/interface/vcpu.h> #include <asm/hw_irq.h> /* @@ -1212,7 +1213,15 @@ EXPORT_SYMBOL_GPL(evtchn_put); void xen_send_IPI_one(unsigned int cpu, enum ipi_vector vector) { - int irq = per_cpu(ipi_to_irq, cpu)[vector]; + int irq; + + if (unlikely(vector == XEN_NMI_VECTOR)) { + int rc = HYPERVISOR_vcpu_op(VCPUOP_send_nmi, cpu, NULL); + if (rc < 0) + printk(KERN_WARNING "Sending nmi to CPU%d failed (rc:%d)\n", cpu, rc); + return; + } + irq = per_cpu(ipi_to_irq, cpu)[vector]; BUG_ON(irq < 0); notify_remote_via_irq(irq); } diff --git a/include/xen/interface/vcpu.h b/include/xen/interface/vcpu.h index 87e6f8a48661..b05288ce3991 100644 --- a/include/xen/interface/vcpu.h +++ b/include/xen/interface/vcpu.h @@ -170,4 +170,6 @@ struct vcpu_register_vcpu_info { }; DEFINE_GUEST_HANDLE_STRUCT(vcpu_register_vcpu_info); +/* Send an NMI to the specified VCPU. @extra_arg == NULL. */ +#define VCPUOP_send_nmi 11 #endif /* __XEN_PUBLIC_VCPU_H__ */ |