This patch adds a new field in struct irq_2_iommu, which can capture whether the entry is in posted mode or remapped mode.
Signed-off-by: Feng Wu <[email protected]> Suggested-by: Thomas Gleixner <[email protected]> --- drivers/iommu/intel_irq_remapping.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/iommu/intel_irq_remapping.c b/drivers/iommu/intel_irq_remapping.c index 9bbc235..028d628 100644 --- a/drivers/iommu/intel_irq_remapping.c +++ b/drivers/iommu/intel_irq_remapping.c @@ -18,6 +18,11 @@ #include "irq_remapping.h" +enum irq_mode { + IRQ_REMAPPING, + IRQ_POSTING, +}; + struct ioapic_scope { struct intel_iommu *iommu; unsigned int id; @@ -37,6 +42,7 @@ struct irq_2_iommu { u16 irte_index; u16 sub_handle; u8 irte_mask; + enum irq_mode mode; }; struct intel_ir_data { @@ -104,6 +110,7 @@ static int alloc_irte(struct intel_iommu *iommu, int irq, irq_iommu->irte_index = index; irq_iommu->sub_handle = 0; irq_iommu->irte_mask = mask; + irq_iommu->mode = IRQ_REMAPPING; } raw_spin_unlock_irqrestore(&irq_2_ir_lock, flags); @@ -144,6 +151,8 @@ static int modify_irte(struct irq_2_iommu *irq_iommu, __iommu_flush_cache(iommu, irte, sizeof(*irte)); rc = qi_flush_iec(iommu, index, 0); + + irq_iommu->mode = irte->pst ? IRQ_POSTING : IRQ_REMAPPING; raw_spin_unlock_irqrestore(&irq_2_ir_lock, flags); return rc; -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
