diff options
| -rw-r--r-- | arch/x86/include/asm/irq_remapping.h | 2 | ||||
| -rw-r--r-- | drivers/iommu/irq_remapping.c | 9 |
2 files changed, 11 insertions, 0 deletions
diff --git a/arch/x86/include/asm/irq_remapping.h b/arch/x86/include/asm/irq_remapping.h index e479fbda55cf..046c7fb1ca43 100644 --- a/arch/x86/include/asm/irq_remapping.h +++ b/arch/x86/include/asm/irq_remapping.h @@ -35,6 +35,7 @@ enum irq_remap_cap { #ifdef CONFIG_IRQ_REMAP +extern bool irq_remapping_cap(enum irq_remap_cap cap); extern void set_irq_remapping_broken(void); extern int irq_remapping_prepare(void); extern int irq_remapping_enable(void); @@ -64,6 +65,7 @@ struct vcpu_data { #else /* CONFIG_IRQ_REMAP */ +static inline bool irq_remapping_cap(enum irq_remap_cap cap) { return 0; } static inline void set_irq_remapping_broken(void) { } static inline int irq_remapping_prepare(void) { return -ENODEV; } static inline int irq_remapping_enable(void) { return -ENODEV; } diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c index ed605a924ca2..2d9993062ded 100644 --- a/drivers/iommu/irq_remapping.c +++ b/drivers/iommu/irq_remapping.c @@ -81,6 +81,15 @@ void set_irq_remapping_broken(void) irq_remap_broken = 1; } +bool irq_remapping_cap(enum irq_remap_cap cap) +{ + if (!remap_ops || disable_irq_post) + return 0; + + return (remap_ops->capability & (1 << cap)); +} +EXPORT_SYMBOL_GPL(irq_remapping_cap); + int __init irq_remapping_prepare(void) { if (disable_irq_remap) |