diff options
| -rw-r--r-- | arch/x86/kernel/apic/apic.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 760adac3d1a8..3cdf48493546 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -36,6 +36,8 @@ #include <linux/smp.h> #include <linux/mm.h> +#include <xen/xen.h> + #include <asm/trace/irq_vectors.h> #include <asm/irq_remapping.h> #include <asm/pc-conf-reg.h> @@ -2344,6 +2346,15 @@ static int __init smp_init_primary_thread_mask(void) { unsigned int cpu; + /* + * XEN/PV provides either none or useless topology information. + * Pretend that all vCPUs are primary threads. + */ + if (xen_pv_domain()) { + cpumask_copy(&__cpu_primary_thread_mask, cpu_possible_mask); + return 0; + } + for (cpu = 0; cpu < nr_logical_cpuids; cpu++) cpu_mark_primary_thread(cpu, cpuid_to_apicid[cpu]); return 0; |