diff options
Diffstat (limited to 'arch/powerpc/platforms/pseries/xics.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/xics.c | 28 |
1 files changed, 17 insertions, 11 deletions
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c index b9b9e11609e..f5f79196721 100644 --- a/arch/powerpc/platforms/pseries/xics.c +++ b/arch/powerpc/platforms/pseries/xics.c @@ -163,14 +163,13 @@ static inline void lpar_qirr_info(int n_cpu , u8 value) /* Interface to generic irq subsystem */ #ifdef CONFIG_SMP -static int get_irq_server(unsigned int virq, unsigned int strict_check) +static int get_irq_server(unsigned int virq, cpumask_t cpumask, + unsigned int strict_check) { int server; /* For the moment only implement delivery to all cpus or one cpu */ - cpumask_t cpumask; cpumask_t tmp = CPU_MASK_NONE; - cpumask_copy(&cpumask, irq_to_desc(virq)->affinity); if (!distribute_irqs) return default_server; @@ -192,10 +191,7 @@ static int get_irq_server(unsigned int virq, unsigned int strict_check) return default_server; } #else -static int get_irq_server(unsigned int virq, unsigned int strict_check) -{ - return default_server; -} +#define get_irq_server(virq, cpumask, strict_check) (default_server) #endif static void xics_unmask_irq(unsigned int virq) @@ -211,7 +207,7 @@ static void xics_unmask_irq(unsigned int virq) if (irq == XICS_IPI || irq == XICS_IRQ_SPURIOUS) return; - server = get_irq_server(virq, 0); + server = get_irq_server(virq, *(irq_to_desc(virq)->affinity), 0); call_status = rtas_call(ibm_set_xive, 3, 1, NULL, irq, server, DEFAULT_PRIORITY); @@ -405,7 +401,7 @@ static int xics_set_affinity(unsigned int virq, const struct cpumask *cpumask) * For the moment only implement delivery to all cpus or one cpu. * Get current irq_server for the given irq */ - irq_server = get_irq_server(virq, 1); + irq_server = get_irq_server(virq, *cpumask, 1); if (irq_server == -1) { char cpulist[128]; cpumask_scnprintf(cpulist, sizeof(cpulist), cpumask); @@ -788,9 +784,13 @@ static void xics_set_cpu_priority(unsigned char cppr) { struct xics_cppr *os_cppr = &__get_cpu_var(xics_cppr); - BUG_ON(os_cppr->index != 0); + /* + * we only really want to set the priority when there's + * just one cppr value on the stack + */ + WARN_ON(os_cppr->index != 0); - os_cppr->stack[os_cppr->index] = cppr; + os_cppr->stack[0] = cppr; if (firmware_has_feature(FW_FEATURE_LPAR)) lpar_cppr_info(cppr); @@ -825,8 +825,14 @@ void xics_setup_cpu(void) void xics_teardown_cpu(void) { + struct xics_cppr *os_cppr = &__get_cpu_var(xics_cppr); int cpu = smp_processor_id(); + /* + * we have to reset the cppr index to 0 because we're + * not going to return from the IPI + */ + os_cppr->index = 0; xics_set_cpu_priority(0); /* Clear any pending IPI request */ |