Enable PCI passthru for HVM guest

diff -r f91555fa60d4 xen/arch/x86/hvm/svm/amd_iommu/amd-iommu-map.c
@@ -468,3 +468,23 @@ int amd_iommu_unmap_page(struct domain *
         return -ENOMEM;
     }
 }
+
+void amd_iommu_unmap_all_domain_pages(struct domain *d)
+{
+    unsigned long flags;
+    u64 io_addr;
+    int domain_id;
+    struct amd_iommu *iommu;
+    struct hvm_iommu *hd = domain_hvm_iommu(d);
+
+    domain_id = hd->domain_id;
+    io_addr = 0x7FFFFFFFFFFF;  /* flush entire cache*/
+
+    for_each_amd_iommu(iommu)
+    {
+        spin_lock_irqsave(&iommu->lock, flags);
+        invalidate_iommu_page(iommu, io_addr, domain_id);
+        flush_command_buffer(iommu);
+        spin_unlock_irqrestore(&iommu->lock, flags);
+    }
+}

199 lines not on this page · raw message

diff -r f91555fa60d4 xen/include/asm-x86/amd-iommu.h
@@ -33,6 +33,8 @@ extern struct list_head amd_iommu_head;
 
 extern int __init amd_iommu_detect(void);
 extern int amd_iommu_domain_init(struct domain *domain);
+extern int amd_iommu_assign_device(struct domain *d, u8 bus, u8 devfn);
+extern void amd_iommu_domain_destroy(struct domain *d);
 extern int amd_iommu_map_page(struct domain *d, unsigned long gfn,
         unsigned long mfn);
 extern int amd_iommu_unmap_page(struct domain *d, unsigned long gfn);

diff -r f91555fa60d4 xen/include/asm-x86/hvm/svm/amd-iommu-proto.h
@@ -63,6 +63,7 @@ void __init enable_iommu(struct amd_iomm
 void __init enable_iommu(struct amd_iommu *iommu);
 
 /* mapping functions */
+void amd_iommu_unmap_all_domain_pages(struct domain *d);
 void *amd_iommu_get_vptr_from_page_table_entry(u32 *entry);
 
 /* device table functions */