korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-18 01:34:14 +08:00
Code Issues Packages Projects Releases Wiki Activity

iommu/vt-d: Use Real PCI DMA device for IRTE

Browse Source 
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().

Link: https://lore.kernel.org/r/20210210161315.316097-2-jonathan.derrick@intel.com
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Lu Baolu <baolu.lu@linux.intel.com>
Acked-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Jon Derrick 2021-02-10 09:13:14 -07:00 committed by Lorenzo Pieralisi
parent a38fd87484
commit 9b4a824b88
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/iommu/intel/irq_remapping.c
View File

@ -1280,7 +1280,8 @@ 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);