hw/arm/smmuv3: Fill the IOTLBEntry leaf field on NH_VA invalidation

Let's propagate the leaf attribute throughout the invalidation path.
This hint is used to reduce the scope of the invalidations to the
last level of translation. Not enforcing it induces large performance
penalties in nested mode.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Kunkun Jiang <jiangkunkun@huawei.com>

hw-arm-smmuv3-Fill-the-IOTLBEntry-leaf-field-on-NH_V.patch

@@ -0,0 +1,81 @@
+From 6393ad5c1ba6a04b038d80ecc1e663ad91ed0d21 Mon Sep 17 00:00:00 2001
+From: Eric Auger <eric.auger@redhat.com>
+Date: Thu, 14 Mar 2019 09:55:13 -0400
+Subject: [PATCH] hw/arm/smmuv3: Fill the IOTLBEntry leaf field on NH_VA
+ invalidation
+
+Let's propagate the leaf attribute throughout the invalidation path.
+This hint is used to reduce the scope of the invalidations to the
+last level of translation. Not enforcing it induces large performance
+penalties in nested mode.
+
+Signed-off-by: Eric Auger <eric.auger@redhat.com>
+Signed-off-by: Kunkun Jiang <jiangkunkun@huawei.com>
+---
+ hw/arm/smmuv3.c | 13 ++++++++-----
+ 1 file changed, 8 insertions(+), 5 deletions(-)
+
+diff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c
+index c6b950af35..c1caa6bc3a 100644
+--- a/hw/arm/smmuv3.c
++++ b/hw/arm/smmuv3.c
+@@ -795,7 +795,7 @@ epilogue:
+ static void smmuv3_notify_iova(IOMMUMemoryRegion *mr,
+                                IOMMUNotifier *n,
+                                int asid,
+-                               dma_addr_t iova)
++                               dma_addr_t iova, bool leaf)
+ {
+     SMMUDevice *sdev = container_of(mr, SMMUDevice, iommu);
+     SMMUEventInfo event = {};
+@@ -826,6 +826,7 @@ static void smmuv3_notify_iova(IOMMUMemoryRegion *mr,
+     entry.perm = IOMMU_NONE;
+     entry.flags = IOMMU_INV_FLAGS_ARCHID;
+     entry.arch_id = asid;
++    entry.leaf = leaf;
+ 
+     memory_region_notify_one(n, &entry);
+ }
+@@ -854,7 +855,8 @@ static void smmuv3_notify_asid(IOMMUMemoryRegion *mr,
+ }
+ 
+ /* invalidate an asid/iova tuple in all mr's */
+-static void smmuv3_inv_notifiers_iova(SMMUState *s, int asid, dma_addr_t iova)
++static void smmuv3_inv_notifiers_iova(SMMUState *s, int asid, dma_addr_t iova,
++                                      bool leaf)
+ {
+     SMMUDevice *sdev;
+ 
+@@ -865,7 +867,7 @@ static void smmuv3_inv_notifiers_iova(SMMUState *s, int asid, dma_addr_t iova)
+         trace_smmuv3_inv_notifiers_iova(mr->parent_obj.name, asid, iova);
+ 
+         IOMMU_NOTIFIER_FOREACH(n, mr) {
+-            smmuv3_notify_iova(mr, n, asid, iova);
++            smmuv3_notify_iova(mr, n, asid, iova, leaf);
+         }
+     }
+ }
+@@ -1018,9 +1020,10 @@ static int smmuv3_cmdq_consume(SMMUv3State *s)
+         {
+             dma_addr_t addr = CMD_ADDR(&cmd);
+             uint16_t vmid = CMD_VMID(&cmd);
++            bool leaf = CMD_LEAF(&cmd);
+ 
+             trace_smmuv3_cmdq_tlbi_nh_vaa(vmid, addr);
+-            smmuv3_inv_notifiers_iova(bs, -1, addr);
++            smmuv3_inv_notifiers_iova(bs, -1, addr, leaf);
+             smmu_iotlb_inv_all(bs);
+             break;
+         }
+@@ -1032,7 +1035,7 @@ static int smmuv3_cmdq_consume(SMMUv3State *s)
+             bool leaf = CMD_LEAF(&cmd);
+ 
+             trace_smmuv3_cmdq_tlbi_nh_va(vmid, asid, addr, leaf);
+-            smmuv3_inv_notifiers_iova(bs, asid, addr);
++            smmuv3_inv_notifiers_iova(bs, asid, addr, leaf);
+             smmu_iotlb_inv_iova(bs, asid, addr);
+             break;
+         }
+-- 
+2.27.0
+