diff options
Diffstat (limited to 'arch/x86/mach-generic/default.c')
| -rw-r--r-- | arch/x86/mach-generic/default.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/arch/x86/mach-generic/default.c b/arch/x86/mach-generic/default.c index e89e8c9dd68..6adc3c69a3c 100644 --- a/arch/x86/mach-generic/default.c +++ b/arch/x86/mach-generic/default.c @@ -18,6 +18,20 @@ #include <asm/mach-default/mach_mpparse.h> #include <asm/mach-default/mach_wakecpu.h> +static void default_vector_allocation_domain(int cpu, struct cpumask *retmask) +{ + /* + * Careful. Some cpus do not strictly honor the set of cpus + * specified in the interrupt destination when using lowest + * priority interrupt delivery mode. + * + * In particular there was a hyperthreading cpu observed to + * deliver interrupts to the wrong hyperthread when only one + * hyperthread was specified in the interrupt desitination. + */ + *retmask = (cpumask_t) { { [0] = APIC_ALL_CPUS } }; +} + /* should be called last. */ static int probe_default(void) { @@ -41,7 +55,7 @@ struct genapic apic_default = { .check_apicid_used = default_check_apicid_used, .check_apicid_present = default_check_apicid_present, - .vector_allocation_domain = vector_allocation_domain, + .vector_allocation_domain = default_vector_allocation_domain, .init_apic_ldr = init_apic_ldr, .ioapic_phys_id_map = ioapic_phys_id_map, |