| Message ID | 20210204190906.38515-2-jonathan.derrick@intel.com |
|---|---|
| State | New |
| Headers | show |
| Series | VMD MSI Remapping Bypass | expand |
On 2/5/21 3:09 AM, Jon Derrick wrote: > VMD retransmits child device MSI/X with the VMD endpoint's requester-id. > In order to support direct interrupt remapping of VMD child devices, > ensure that the IRTE is programmed with the VMD endpoint's requester-id > using pci_real_dma_dev(). > > Signed-off-by: Jon Derrick <jonathan.derrick@intel.com> > --- > drivers/iommu/intel/irq_remapping.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/iommu/intel/irq_remapping.c b/drivers/iommu/intel/irq_remapping.c > index 685200a5cff0..1939e070eec8 100644 > --- a/drivers/iommu/intel/irq_remapping.c > +++ b/drivers/iommu/intel/irq_remapping.c > @@ -1276,7 +1276,8 @@ static void intel_irq_remapping_prepare_irte(struct intel_ir_data *data, > break; > case X86_IRQ_ALLOC_TYPE_PCI_MSI: > case X86_IRQ_ALLOC_TYPE_PCI_MSIX: > - set_msi_sid(irte, msi_desc_to_pci_dev(info->desc)); > + set_msi_sid(irte, > + pci_real_dma_dev(msi_desc_to_pci_dev(info->desc))); > break; > default: > BUG_ON(1); > Acked-by: Lu Baolu <baolu.lu@linux.intel.com> Best regards, baolu
diff --git a/drivers/iommu/intel/irq_remapping.c b/drivers/iommu/intel/irq_remapping.c index 685200a5cff0..1939e070eec8 100644 --- a/drivers/iommu/intel/irq_remapping.c +++ b/drivers/iommu/intel/irq_remapping.c @@ -1276,7 +1276,8 @@ static void intel_irq_remapping_prepare_irte(struct intel_ir_data *data, break; case X86_IRQ_ALLOC_TYPE_PCI_MSI: case X86_IRQ_ALLOC_TYPE_PCI_MSIX: - set_msi_sid(irte, msi_desc_to_pci_dev(info->desc)); + set_msi_sid(irte, + pci_real_dma_dev(msi_desc_to_pci_dev(info->desc))); break; default: BUG_ON(1);
VMD retransmits child device MSI/X with the VMD endpoint's requester-id. In order to support direct interrupt remapping of VMD child devices, ensure that the IRTE is programmed with the VMD endpoint's requester-id using pci_real_dma_dev(). Signed-off-by: Jon Derrick <jonathan.derrick@intel.com> --- drivers/iommu/intel/irq_remapping.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)