Messages in this thread Patch in this message |  | | From | Peter Xu <> | Subject | [PATCH v2 1/3] intel-iommu: add some traces for PSIs | Date | Wed, 18 Apr 2018 16:39:51 +0800 |
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It is helpful to debug and triage PSI notification missings.
Signed-off-by: Peter Xu <peterx@redhat.com> --- drivers/iommu/dmar.c | 3 +++ drivers/iommu/intel-iommu.c | 3 +++ 2 files changed, 6 insertions(+)
diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c index 9a7ffd13c7f0..62ae26c3f7b7 100644 --- a/drivers/iommu/dmar.c +++ b/drivers/iommu/dmar.c @@ -1325,6 +1325,9 @@ void qi_flush_iotlb(struct intel_iommu *iommu, u16 did, u64 addr, struct qi_desc desc; int ih = 0; + pr_debug("%s: iommu %d did %u addr 0x%llx order %u type %llx\n", + __func__, iommu->seq_id, did, addr, size_order, type); + if (cap_write_drain(iommu->cap)) dw = 1; diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 582fd01cb7d1..a64da83e867c 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -1396,6 +1396,9 @@ static void __iommu_flush_iotlb(struct intel_iommu *iommu, u16 did, u64 val = 0, val_iva = 0; unsigned long flag; + pr_debug("%s: iommu %d did %u addr 0x%llx order %u type %llx\n", + __func__, iommu->seq_id, did, addr, size_order, type); + switch (type) { case DMA_TLB_GLOBAL_FLUSH: /* global flush doesn't need set IVA_REG */ -- 2.14.3
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