diff options
| -rw-r--r-- | arch/x86/xen/enlighten_pv.c | 9 | ||||
| -rw-r--r-- | arch/x86/xen/smp.c | 29 | ||||
| -rw-r--r-- | arch/x86/xen/smp.h | 8 |
3 files changed, 35 insertions, 11 deletions
diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c index 1cb7947df296..b226f67fb741 100644 --- a/arch/x86/xen/enlighten_pv.c +++ b/arch/x86/xen/enlighten_pv.c @@ -1477,12 +1477,21 @@ static int xen_cpu_up_prepare_pv(unsigned int cpu) cpu, rc); return rc; } + + rc = xen_smp_intr_init_pv(cpu); + if (rc) { + WARN(1, "xen_smp_intr_init_pv() for CPU %d failed: %d\n", + cpu, rc); + return rc; + } + return 0; } static int xen_cpu_dead_pv(unsigned int cpu) { xen_smp_intr_free(cpu); + xen_smp_intr_free_pv(cpu); xen_teardown_timer(cpu); diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c index eaa36162ed4a..18fbec1fca34 100644 --- a/arch/x86/xen/smp.c +++ b/arch/x86/xen/smp.c @@ -133,9 +133,10 @@ void xen_smp_intr_free(unsigned int cpu) kfree(per_cpu(xen_callfuncsingle_irq, cpu).name); per_cpu(xen_callfuncsingle_irq, cpu).name = NULL; } - if (xen_hvm_domain()) - return; +} +void xen_smp_intr_free_pv(unsigned int cpu) +{ if (per_cpu(xen_irq_work, cpu).irq >= 0) { unbind_from_irqhandler(per_cpu(xen_irq_work, cpu).irq, NULL); per_cpu(xen_irq_work, cpu).irq = -1; @@ -149,11 +150,12 @@ void xen_smp_intr_free(unsigned int cpu) kfree(per_cpu(xen_pmu_irq, cpu).name); per_cpu(xen_pmu_irq, cpu).name = NULL; } -}; +} + int xen_smp_intr_init(unsigned int cpu) { int rc; - char *resched_name, *callfunc_name, *debug_name, *pmu_name; + char *resched_name, *callfunc_name, *debug_name; resched_name = kasprintf(GFP_KERNEL, "resched%d", cpu); rc = bind_ipi_to_irqhandler(XEN_RESCHEDULE_VECTOR, @@ -200,12 +202,17 @@ int xen_smp_intr_init(unsigned int cpu) per_cpu(xen_callfuncsingle_irq, cpu).irq = rc; per_cpu(xen_callfuncsingle_irq, cpu).name = callfunc_name; - /* - * The IRQ worker on PVHVM goes through the native path and uses the - * IPI mechanism. - */ - if (xen_hvm_domain()) - return 0; + return 0; + + fail: + xen_smp_intr_free(cpu); + return rc; +} + +int xen_smp_intr_init_pv(unsigned int cpu) +{ + int rc; + char *callfunc_name, *pmu_name; callfunc_name = kasprintf(GFP_KERNEL, "irqwork%d", cpu); rc = bind_ipi_to_irqhandler(XEN_IRQ_WORK_VECTOR, @@ -234,7 +241,7 @@ int xen_smp_intr_init(unsigned int cpu) return 0; fail: - xen_smp_intr_free(cpu); + xen_smp_intr_free_pv(cpu); return rc; } diff --git a/arch/x86/xen/smp.h b/arch/x86/xen/smp.h index 9beef333584a..33320cea5a01 100644 --- a/arch/x86/xen/smp.h +++ b/arch/x86/xen/smp.h @@ -11,6 +11,8 @@ extern void xen_send_IPI_self(int vector); extern int xen_smp_intr_init(unsigned int cpu); extern void xen_smp_intr_free(unsigned int cpu); +int xen_smp_intr_init_pv(unsigned int cpu); +void xen_smp_intr_free_pv(unsigned int cpu); #else /* CONFIG_SMP */ @@ -19,6 +21,12 @@ static inline int xen_smp_intr_init(unsigned int cpu) return 0; } static inline void xen_smp_intr_free(unsigned int cpu) {} + +static inline int xen_smp_intr_init_pv(unsigned int cpu) +{ + return 0; +} +static inline void xen_smp_intr_free_pv(unsigned int cpu) {} #endif /* CONFIG_SMP */ #endif |