Merge ../linux-2.6-watchdog-mm

[linux-drm-fsl-dcu.git] / arch / x86_64 / kernel / genapic_flat.c

diff --git a/arch/x86_64/kernel/genapic_flat.c b/arch/x86_64/kernel/genapic_flat.c
index 50ad153eaac416f42d7d93f90b23e23a11df07c7..7c01db8fa9d122eaf2adcff1e0927ec98a2e17e3 100644 (file)
--- a/arch/x86_64/kernel/genapic_flat.c
+++ b/arch/x86_64/kernel/genapic_flat.c
@@ -22,6 +22,20 @@ static cpumask_t flat_target_cpus(void)
        return cpu_online_map;
 }
 
+static cpumask_t flat_vector_allocation_domain(int cpu)
+{
+       /* 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.
+        */
+       cpumask_t domain = { { [0] = APIC_ALL_CPUS, } };
+       return domain;
+}
+
 /*
  * Set up the logical destination ID.
  *
@@ -121,6 +135,7 @@ struct genapic apic_flat =  {
        .int_delivery_mode = dest_LowestPrio,
        .int_dest_mode = (APIC_DEST_LOGICAL != 0),
        .target_cpus = flat_target_cpus,
+       .vector_allocation_domain = flat_vector_allocation_domain,
        .apic_id_registered = flat_apic_id_registered,
        .init_apic_ldr = flat_init_apic_ldr,
        .send_IPI_all = flat_send_IPI_all,
@@ -138,9 +153,17 @@ struct genapic apic_flat =  {
 
 static cpumask_t physflat_target_cpus(void)
 {
-       return cpumask_of_cpu(0);
+       return cpu_online_map;
 }
 
+static cpumask_t physflat_vector_allocation_domain(int cpu)
+{
+       cpumask_t domain = CPU_MASK_NONE;
+       cpu_set(cpu, domain);
+       return domain;
+}
+
+
 static void physflat_send_IPI_mask(cpumask_t cpumask, int vector)
 {
        send_IPI_mask_sequence(cpumask, vector);
@@ -179,6 +202,7 @@ struct genapic apic_physflat =  {
        .int_delivery_mode = dest_Fixed,
        .int_dest_mode = (APIC_DEST_PHYSICAL != 0),
        .target_cpus = physflat_target_cpus,
+       .vector_allocation_domain = physflat_vector_allocation_domain,
        .apic_id_registered = flat_apic_id_registered,
        .init_apic_ldr = flat_init_apic_ldr,/*not needed, but shouldn't hurt*/
        .send_IPI_all = physflat_send_IPI_all,