diff options
Diffstat (limited to 'drivers/hv/hv.c')
| -rw-r--r-- | drivers/hv/hv.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c index dd0af8940657..76304a622140 100644 --- a/drivers/hv/hv.c +++ b/drivers/hv/hv.c @@ -137,6 +137,8 @@ int hv_init(void) memset(hv_context.synic_event_page, 0, sizeof(void *) * NR_CPUS); memset(hv_context.synic_message_page, 0, sizeof(void *) * NR_CPUS); + memset(hv_context.vp_index, 0, + sizeof(int) * NR_CPUS); max_leaf = query_hypervisor_info(); @@ -296,6 +298,7 @@ void hv_synic_init(void *irqarg) union hv_synic_siefp siefp; union hv_synic_sint shared_sint; union hv_synic_scontrol sctrl; + u64 vp_index; u32 irq_vector = *((u32 *)(irqarg)); int cpu = smp_processor_id(); @@ -355,6 +358,14 @@ void hv_synic_init(void *irqarg) wrmsrl(HV_X64_MSR_SCONTROL, sctrl.as_uint64); hv_context.synic_initialized = true; + + /* + * Setup the mapping between Hyper-V's notion + * of cpuid and Linux' notion of cpuid. + * This array will be indexed using Linux cpuid. + */ + rdmsrl(HV_X64_MSR_VP_INDEX, vp_index); + hv_context.vp_index[cpu] = (u32)vp_index; return; cleanup: |