qemu-kvm/kvm-vfio-container-Switch-to-IOMMU-BE-set_dirty_page_tra.patch

From a2c8aa64b1b21a3e1d4cf2a4fe7d84dc32f69284 Mon Sep 17 00:00:00 2001
From: Eric Auger <eric.auger@redhat.com>
Date: Thu, 2 Nov 2023 15:12:33 +0800
Subject: [PATCH 008/101] vfio/container: Switch to IOMMU BE
 set_dirty_page_tracking/query_dirty_bitmap API
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RH-Author: Eric Auger <eric.auger@redhat.com>
RH-MergeRequest: 211: IOMMUFD backend backport
RH-Jira: RHEL-19302 RHEL-21057
RH-Acked-by: Cédric Le Goater <clg@redhat.com>
RH-Acked-by: Sebastian Ott <sebott@redhat.com>
RH-Commit: [7/67] 88368809c7990e1d9b01406e48694fe3e3fb1397 (eauger1/centos-qemu-kvm)

dirty_pages_supported field is also moved to the base container

No functional change intended.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Yi Sun <yi.y.sun@linux.intel.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
(cherry picked from commit bb424490edcef73d07f200d53f69415b203d81df)
Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
 hw/vfio/common.c                      | 12 ++++++++----
 hw/vfio/container-base.c              | 16 ++++++++++++++++
 hw/vfio/container.c                   | 21 ++++++++++++++-------
 include/hw/vfio/vfio-common.h         |  6 ------
 include/hw/vfio/vfio-container-base.h |  6 ++++++
 5 files changed, 44 insertions(+), 17 deletions(-)

diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index 1d8202537e..b1a875ca93 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -1079,7 +1079,8 @@ static void vfio_listener_log_global_start(MemoryListener *listener)
     if (vfio_devices_all_device_dirty_tracking(container)) {
         ret = vfio_devices_dma_logging_start(container);
     } else {
-        ret = vfio_set_dirty_page_tracking(container, true);
+        ret = vfio_container_set_dirty_page_tracking(&container->bcontainer,
+                                                     true);
     }
 
     if (ret) {
@@ -1097,7 +1098,8 @@ static void vfio_listener_log_global_stop(MemoryListener *listener)
     if (vfio_devices_all_device_dirty_tracking(container)) {
         vfio_devices_dma_logging_stop(container);
     } else {
-        ret = vfio_set_dirty_page_tracking(container, false);
+        ret = vfio_container_set_dirty_page_tracking(&container->bcontainer,
+                                                     false);
     }
 
     if (ret) {
@@ -1165,7 +1167,8 @@ int vfio_get_dirty_bitmap(VFIOContainer *container, uint64_t iova,
     VFIOBitmap vbmap;
     int ret;
 
-    if (!container->dirty_pages_supported && !all_device_dirty_tracking) {
+    if (!container->bcontainer.dirty_pages_supported &&
+        !all_device_dirty_tracking) {
         cpu_physical_memory_set_dirty_range(ram_addr, size,
                                             tcg_enabled() ? DIRTY_CLIENTS_ALL :
                                             DIRTY_CLIENTS_NOCODE);
@@ -1180,7 +1183,8 @@ int vfio_get_dirty_bitmap(VFIOContainer *container, uint64_t iova,
     if (all_device_dirty_tracking) {
         ret = vfio_devices_query_dirty_bitmap(container, &vbmap, iova, size);
     } else {
-        ret = vfio_query_dirty_bitmap(container, &vbmap, iova, size);
+        ret = vfio_container_query_dirty_bitmap(&container->bcontainer, &vbmap,
+                                                iova, size);
     }
 
     if (ret) {
diff --git a/hw/vfio/container-base.c b/hw/vfio/container-base.c
index 3933391e0d..5d654ae172 100644
--- a/hw/vfio/container-base.c
+++ b/hw/vfio/container-base.c
@@ -31,11 +31,27 @@ int vfio_container_dma_unmap(VFIOContainerBase *bcontainer,
     return bcontainer->ops->dma_unmap(bcontainer, iova, size, iotlb);
 }
 
+int vfio_container_set_dirty_page_tracking(VFIOContainerBase *bcontainer,
+                                           bool start)
+{
+    g_assert(bcontainer->ops->set_dirty_page_tracking);
+    return bcontainer->ops->set_dirty_page_tracking(bcontainer, start);
+}
+
+int vfio_container_query_dirty_bitmap(VFIOContainerBase *bcontainer,
+                                      VFIOBitmap *vbmap,
+                                      hwaddr iova, hwaddr size)
+{
+    g_assert(bcontainer->ops->query_dirty_bitmap);
+    return bcontainer->ops->query_dirty_bitmap(bcontainer, vbmap, iova, size);
+}
+
 void vfio_container_init(VFIOContainerBase *bcontainer, VFIOAddressSpace *space,
                          const VFIOIOMMUOps *ops)
 {
     bcontainer->ops = ops;
     bcontainer->space = space;
+    bcontainer->dirty_pages_supported = false;
     QLIST_INIT(&bcontainer->giommu_list);
 }
 
diff --git a/hw/vfio/container.c b/hw/vfio/container.c
index f12fcb6fe1..3ab74e2615 100644
--- a/hw/vfio/container.c
+++ b/hw/vfio/container.c
@@ -131,7 +131,7 @@ static int vfio_legacy_dma_unmap(VFIOContainerBase *bcontainer, hwaddr iova,
 
     if (iotlb && vfio_devices_all_running_and_mig_active(container)) {
         if (!vfio_devices_all_device_dirty_tracking(container) &&
-            container->dirty_pages_supported) {
+            container->bcontainer.dirty_pages_supported) {
             return vfio_dma_unmap_bitmap(container, iova, size, iotlb);
         }
 
@@ -205,14 +205,17 @@ static int vfio_legacy_dma_map(VFIOContainerBase *bcontainer, hwaddr iova,
     return -errno;
 }
 
-int vfio_set_dirty_page_tracking(VFIOContainer *container, bool start)
+static int vfio_legacy_set_dirty_page_tracking(VFIOContainerBase *bcontainer,
+                                               bool start)
 {
+    VFIOContainer *container = container_of(bcontainer, VFIOContainer,
+                                            bcontainer);
     int ret;
     struct vfio_iommu_type1_dirty_bitmap dirty = {
         .argsz = sizeof(dirty),
     };
 
-    if (!container->dirty_pages_supported) {
+    if (!bcontainer->dirty_pages_supported) {
         return 0;
     }
 
@@ -232,9 +235,12 @@ int vfio_set_dirty_page_tracking(VFIOContainer *container, bool start)
     return ret;
 }
 
-int vfio_query_dirty_bitmap(VFIOContainer *container, VFIOBitmap *vbmap,
-                            hwaddr iova, hwaddr size)
+static int vfio_legacy_query_dirty_bitmap(VFIOContainerBase *bcontainer,
+                                          VFIOBitmap *vbmap,
+                                          hwaddr iova, hwaddr size)
 {
+    VFIOContainer *container = container_of(bcontainer, VFIOContainer,
+                                            bcontainer);
     struct vfio_iommu_type1_dirty_bitmap *dbitmap;
     struct vfio_iommu_type1_dirty_bitmap_get *range;
     int ret;
@@ -461,7 +467,7 @@ static void vfio_get_iommu_info_migration(VFIOContainer *container,
      * qemu_real_host_page_size to mark those dirty.
      */
     if (cap_mig->pgsize_bitmap & qemu_real_host_page_size()) {
-        container->dirty_pages_supported = true;
+        container->bcontainer.dirty_pages_supported = true;
         container->max_dirty_bitmap_size = cap_mig->max_dirty_bitmap_size;
         container->dirty_pgsizes = cap_mig->pgsize_bitmap;
     }
@@ -553,7 +559,6 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as,
     container = g_malloc0(sizeof(*container));
     container->fd = fd;
     container->error = NULL;
-    container->dirty_pages_supported = false;
     container->dma_max_mappings = 0;
     container->iova_ranges = NULL;
     QLIST_INIT(&container->vrdl_list);
@@ -937,4 +942,6 @@ void vfio_detach_device(VFIODevice *vbasedev)
 const VFIOIOMMUOps vfio_legacy_ops = {
     .dma_map = vfio_legacy_dma_map,
     .dma_unmap = vfio_legacy_dma_unmap,
+    .set_dirty_page_tracking = vfio_legacy_set_dirty_page_tracking,
+    .query_dirty_bitmap = vfio_legacy_query_dirty_bitmap,
 };
diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h
index bd4de6cb3a..60f2785fe0 100644
--- a/include/hw/vfio/vfio-common.h
+++ b/include/hw/vfio/vfio-common.h
@@ -83,7 +83,6 @@ typedef struct VFIOContainer {
     unsigned iommu_type;
     Error *error;
     bool initialized;
-    bool dirty_pages_supported;
     uint64_t dirty_pgsizes;
     uint64_t max_dirty_bitmap_size;
     unsigned long pgsizes;
@@ -190,11 +189,6 @@ VFIOAddressSpace *vfio_get_address_space(AddressSpace *as);
 void vfio_put_address_space(VFIOAddressSpace *space);
 bool vfio_devices_all_running_and_saving(VFIOContainer *container);
 
-/* container->fd */
-int vfio_set_dirty_page_tracking(VFIOContainer *container, bool start);
-int vfio_query_dirty_bitmap(VFIOContainer *container, VFIOBitmap *vbmap,
-                            hwaddr iova, hwaddr size);
-
 /* SPAPR specific */
 int vfio_container_add_section_window(VFIOContainer *container,
                                       MemoryRegionSection *section,
diff --git a/include/hw/vfio/vfio-container-base.h b/include/hw/vfio/vfio-container-base.h
index c7cc6ec9c5..f244f003d0 100644
--- a/include/hw/vfio/vfio-container-base.h
+++ b/include/hw/vfio/vfio-container-base.h
@@ -36,6 +36,7 @@ typedef struct VFIOAddressSpace {
 typedef struct VFIOContainerBase {
     const VFIOIOMMUOps *ops;
     VFIOAddressSpace *space;
+    bool dirty_pages_supported;
     QLIST_HEAD(, VFIOGuestIOMMU) giommu_list;
     QLIST_ENTRY(VFIOContainerBase) next;
 } VFIOContainerBase;
@@ -54,6 +55,11 @@ int vfio_container_dma_map(VFIOContainerBase *bcontainer,
 int vfio_container_dma_unmap(VFIOContainerBase *bcontainer,
                              hwaddr iova, ram_addr_t size,
                              IOMMUTLBEntry *iotlb);
+int vfio_container_set_dirty_page_tracking(VFIOContainerBase *bcontainer,
+                                           bool start);
+int vfio_container_query_dirty_bitmap(VFIOContainerBase *bcontainer,
+                                      VFIOBitmap *vbmap,
+                                      hwaddr iova, hwaddr size);
 
 void vfio_container_init(VFIOContainerBase *bcontainer,
                          VFIOAddressSpace *space,
-- 
2.39.3