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[PATCH v2 04/19] intel_iommu: Fill the PASID field when creating an IOMM


From: CLEMENT MATHIEU--DRIF
Subject: [PATCH v2 04/19] intel_iommu: Fill the PASID field when creating an IOMMUTLBEntry
Date: Mon, 20 Jan 2025 17:41:42 +0000

From: Clement Mathieu--Drif <clement.mathieu--drif@eviden.com>

PASID value must be used by devices as a key (or part of a key)
when populating their ATC with the IOTLB entries returned by the IOMMU.

Signed-off-by: Clement Mathieu--Drif <clement.mathieu--drif@eviden.com>
---
 hw/i386/intel_iommu.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index 1d5ff8f4f6..c58e18a56c 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -2511,6 +2511,7 @@ static void 
vtd_iotlb_page_invalidate_notify(IntelIOMMUState *s,
                         .translated_addr = 0,
                         .addr_mask = size - 1,
                         .perm = IOMMU_NONE,
+                        .pasid = vtd_as->pasid,
                     },
                 };
                 memory_region_notify_iommu(&vtd_as->iommu, 0, event);
@@ -3098,6 +3099,7 @@ static void do_invalidate_device_tlb(VTDAddressSpace 
*vtd_dev_as,
     event.entry.iova = addr;
     event.entry.perm = IOMMU_NONE;
     event.entry.translated_addr = 0;
+    event.entry.pasid = vtd_dev_as->pasid;
     memory_region_notify_iommu(&vtd_dev_as->iommu, 0, event);
 }
 
@@ -3680,6 +3682,7 @@ static IOMMUTLBEntry 
vtd_iommu_translate(IOMMUMemoryRegion *iommu, hwaddr addr,
     IOMMUTLBEntry iotlb = {
         /* We'll fill in the rest later. */
         .target_as = &address_space_memory,
+        .pasid = vtd_as->pasid,
     };
     bool success;
 
-- 
2.47.1



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