qemu-kvm/kvm-vfio-container-Convert-functions-to-base-container.patch

From facad966c42b1ec38b12e45f2b84bd059542b60c Mon Sep 17 00:00:00 2001
From: Eric Auger <eric.auger@redhat.com>
Date: Thu, 2 Nov 2023 15:12:35 +0800
Subject: [PATCH 010/101] vfio/container: Convert functions to base container
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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: [9/67] a0002d6e9cb0ca76e3e2f25208ecba22dd9f9a88 (eauger1/centos-qemu-kvm)

In the prospect to get rid of VFIOContainer refs
in common.c lets convert misc functions to use the base
container object instead:

vfio_devices_all_dirty_tracking
vfio_devices_all_device_dirty_tracking
vfio_devices_all_running_and_mig_active
vfio_devices_query_dirty_bitmap
vfio_get_dirty_bitmap

Signed-off-by: Eric Auger <eric.auger@redhat.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 e1cac6b203f45b5322e831e8d50edfdf18609b09)
Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
 hw/vfio/common.c              | 42 +++++++++++++++--------------------
 hw/vfio/container.c           |  6 ++---
 hw/vfio/trace-events          |  2 +-
 include/hw/vfio/vfio-common.h |  9 ++++----
 4 files changed, 26 insertions(+), 33 deletions(-)

diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index 9415395ed9..cf6618f6ed 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -177,9 +177,8 @@ bool vfio_device_state_is_precopy(VFIODevice *vbasedev)
            migration->device_state == VFIO_DEVICE_STATE_PRE_COPY_P2P;
 }
 
-static bool vfio_devices_all_dirty_tracking(VFIOContainer *container)
+static bool vfio_devices_all_dirty_tracking(VFIOContainerBase *bcontainer)
 {
-    VFIOContainerBase *bcontainer = &container->bcontainer;
     VFIODevice *vbasedev;
     MigrationState *ms = migrate_get_current();
 
@@ -204,9 +203,8 @@ static bool vfio_devices_all_dirty_tracking(VFIOContainer *container)
     return true;
 }
 
-bool vfio_devices_all_device_dirty_tracking(VFIOContainer *container)
+bool vfio_devices_all_device_dirty_tracking(VFIOContainerBase *bcontainer)
 {
-    VFIOContainerBase *bcontainer = &container->bcontainer;
     VFIODevice *vbasedev;
 
     QLIST_FOREACH(vbasedev, &bcontainer->device_list, container_next) {
@@ -222,9 +220,8 @@ bool vfio_devices_all_device_dirty_tracking(VFIOContainer *container)
  * Check if all VFIO devices are running and migration is active, which is
  * essentially equivalent to the migration being in pre-copy phase.
  */
-bool vfio_devices_all_running_and_mig_active(VFIOContainer *container)
+bool vfio_devices_all_running_and_mig_active(VFIOContainerBase *bcontainer)
 {
-    VFIOContainerBase *bcontainer = &container->bcontainer;
     VFIODevice *vbasedev;
 
     if (!migration_is_active(migrate_get_current())) {
@@ -1082,7 +1079,7 @@ static void vfio_listener_log_global_start(MemoryListener *listener)
     VFIOContainer *container = container_of(listener, VFIOContainer, listener);
     int ret;
 
-    if (vfio_devices_all_device_dirty_tracking(container)) {
+    if (vfio_devices_all_device_dirty_tracking(&container->bcontainer)) {
         ret = vfio_devices_dma_logging_start(container);
     } else {
         ret = vfio_container_set_dirty_page_tracking(&container->bcontainer,
@@ -1101,7 +1098,7 @@ static void vfio_listener_log_global_stop(MemoryListener *listener)
     VFIOContainer *container = container_of(listener, VFIOContainer, listener);
     int ret = 0;
 
-    if (vfio_devices_all_device_dirty_tracking(container)) {
+    if (vfio_devices_all_device_dirty_tracking(&container->bcontainer)) {
         vfio_devices_dma_logging_stop(container);
     } else {
         ret = vfio_container_set_dirty_page_tracking(&container->bcontainer,
@@ -1141,11 +1138,10 @@ static int vfio_device_dma_logging_report(VFIODevice *vbasedev, hwaddr iova,
     return 0;
 }
 
-int vfio_devices_query_dirty_bitmap(VFIOContainer *container,
+int vfio_devices_query_dirty_bitmap(VFIOContainerBase *bcontainer,
                                     VFIOBitmap *vbmap, hwaddr iova,
                                     hwaddr size)
 {
-    VFIOContainerBase *bcontainer = &container->bcontainer;
     VFIODevice *vbasedev;
     int ret;
 
@@ -1165,17 +1161,16 @@ int vfio_devices_query_dirty_bitmap(VFIOContainer *container,
     return 0;
 }
 
-int vfio_get_dirty_bitmap(VFIOContainer *container, uint64_t iova,
+int vfio_get_dirty_bitmap(VFIOContainerBase *bcontainer, uint64_t iova,
                           uint64_t size, ram_addr_t ram_addr)
 {
     bool all_device_dirty_tracking =
-        vfio_devices_all_device_dirty_tracking(container);
+        vfio_devices_all_device_dirty_tracking(bcontainer);
     uint64_t dirty_pages;
     VFIOBitmap vbmap;
     int ret;
 
-    if (!container->bcontainer.dirty_pages_supported &&
-        !all_device_dirty_tracking) {
+    if (!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);
@@ -1188,10 +1183,9 @@ 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);
+        ret = vfio_devices_query_dirty_bitmap(bcontainer, &vbmap, iova, size);
     } else {
-        ret = vfio_container_query_dirty_bitmap(&container->bcontainer, &vbmap,
-                                                iova, size);
+        ret = vfio_container_query_dirty_bitmap(bcontainer, &vbmap, iova, size);
     }
 
     if (ret) {
@@ -1201,8 +1195,7 @@ int vfio_get_dirty_bitmap(VFIOContainer *container, uint64_t iova,
     dirty_pages = cpu_physical_memory_set_dirty_lebitmap(vbmap.bitmap, ram_addr,
                                                          vbmap.pages);
 
-    trace_vfio_get_dirty_bitmap(container->fd, iova, size, vbmap.size,
-                                ram_addr, dirty_pages);
+    trace_vfio_get_dirty_bitmap(iova, size, vbmap.size, ram_addr, dirty_pages);
 out:
     g_free(vbmap.bitmap);
 
@@ -1236,8 +1229,8 @@ static void vfio_iommu_map_dirty_notify(IOMMUNotifier *n, IOMMUTLBEntry *iotlb)
 
     rcu_read_lock();
     if (vfio_get_xlat_addr(iotlb, NULL, &translated_addr, NULL)) {
-        ret = vfio_get_dirty_bitmap(container, iova, iotlb->addr_mask + 1,
-                                    translated_addr);
+        ret = vfio_get_dirty_bitmap(&container->bcontainer, iova,
+                                    iotlb->addr_mask + 1, translated_addr);
         if (ret) {
             error_report("vfio_iommu_map_dirty_notify(%p, 0x%"HWADDR_PRIx", "
                          "0x%"HWADDR_PRIx") = %d (%s)",
@@ -1266,7 +1259,8 @@ static int vfio_ram_discard_get_dirty_bitmap(MemoryRegionSection *section,
      * Sync the whole mapped region (spanning multiple individual mappings)
      * in one go.
      */
-    return vfio_get_dirty_bitmap(vrdl->container, iova, size, ram_addr);
+    return vfio_get_dirty_bitmap(&vrdl->container->bcontainer, iova, size,
+                                 ram_addr);
 }
 
 static int vfio_sync_ram_discard_listener_dirty_bitmap(VFIOContainer *container,
@@ -1335,7 +1329,7 @@ static int vfio_sync_dirty_bitmap(VFIOContainer *container,
     ram_addr = memory_region_get_ram_addr(section->mr) +
                section->offset_within_region;
 
-    return vfio_get_dirty_bitmap(container,
+    return vfio_get_dirty_bitmap(&container->bcontainer,
                    REAL_HOST_PAGE_ALIGN(section->offset_within_address_space),
                    int128_get64(section->size), ram_addr);
 }
@@ -1350,7 +1344,7 @@ static void vfio_listener_log_sync(MemoryListener *listener,
         return;
     }
 
-    if (vfio_devices_all_dirty_tracking(container)) {
+    if (vfio_devices_all_dirty_tracking(&container->bcontainer)) {
         ret = vfio_sync_dirty_bitmap(container, section);
         if (ret) {
             error_report("vfio: Failed to sync dirty bitmap, err: %d (%s)", ret,
diff --git a/hw/vfio/container.c b/hw/vfio/container.c
index 63a906de93..7bd81eab09 100644
--- a/hw/vfio/container.c
+++ b/hw/vfio/container.c
@@ -129,8 +129,8 @@ static int vfio_legacy_dma_unmap(VFIOContainerBase *bcontainer, hwaddr iova,
     bool need_dirty_sync = false;
     int ret;
 
-    if (iotlb && vfio_devices_all_running_and_mig_active(container)) {
-        if (!vfio_devices_all_device_dirty_tracking(container) &&
+    if (iotlb && vfio_devices_all_running_and_mig_active(bcontainer)) {
+        if (!vfio_devices_all_device_dirty_tracking(bcontainer) &&
             container->bcontainer.dirty_pages_supported) {
             return vfio_dma_unmap_bitmap(container, iova, size, iotlb);
         }
@@ -162,7 +162,7 @@ static int vfio_legacy_dma_unmap(VFIOContainerBase *bcontainer, hwaddr iova,
     }
 
     if (need_dirty_sync) {
-        ret = vfio_get_dirty_bitmap(container, iova, size,
+        ret = vfio_get_dirty_bitmap(bcontainer, iova, size,
                                     iotlb->translated_addr);
         if (ret) {
             return ret;
diff --git a/hw/vfio/trace-events b/hw/vfio/trace-events
index 9f7fedee98..08a1f9dfa4 100644
--- a/hw/vfio/trace-events
+++ b/hw/vfio/trace-events
@@ -117,7 +117,7 @@ vfio_region_sparse_mmap_header(const char *name, int index, int nr_areas) "Devic
 vfio_region_sparse_mmap_entry(int i, unsigned long start, unsigned long end) "sparse entry %d [0x%lx - 0x%lx]"
 vfio_get_dev_region(const char *name, int index, uint32_t type, uint32_t subtype) "%s index %d, %08x/%08x"
 vfio_legacy_dma_unmap_overflow_workaround(void) ""
-vfio_get_dirty_bitmap(int fd, uint64_t iova, uint64_t size, uint64_t bitmap_size, uint64_t start, uint64_t dirty_pages) "container fd=%d, iova=0x%"PRIx64" size= 0x%"PRIx64" bitmap_size=0x%"PRIx64" start=0x%"PRIx64" dirty_pages=%"PRIu64
+vfio_get_dirty_bitmap(uint64_t iova, uint64_t size, uint64_t bitmap_size, uint64_t start, uint64_t dirty_pages) "iova=0x%"PRIx64" size= 0x%"PRIx64" bitmap_size=0x%"PRIx64" start=0x%"PRIx64" dirty_pages=%"PRIu64
 vfio_iommu_map_dirty_notify(uint64_t iova_start, uint64_t iova_end) "iommu dirty @ 0x%"PRIx64" - 0x%"PRIx64
 
 # platform.c
diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h
index 9740cf9fbc..bc67e1316c 100644
--- a/include/hw/vfio/vfio-common.h
+++ b/include/hw/vfio/vfio-common.h
@@ -186,7 +186,6 @@ typedef struct VFIODisplay {
 
 VFIOAddressSpace *vfio_get_address_space(AddressSpace *as);
 void vfio_put_address_space(VFIOAddressSpace *space);
-bool vfio_devices_all_running_and_saving(VFIOContainer *container);
 
 /* SPAPR specific */
 int vfio_container_add_section_window(VFIOContainer *container,
@@ -260,11 +259,11 @@ bool vfio_migration_realize(VFIODevice *vbasedev, Error **errp);
 void vfio_migration_exit(VFIODevice *vbasedev);
 
 int vfio_bitmap_alloc(VFIOBitmap *vbmap, hwaddr size);
-bool vfio_devices_all_running_and_mig_active(VFIOContainer *container);
-bool vfio_devices_all_device_dirty_tracking(VFIOContainer *container);
-int vfio_devices_query_dirty_bitmap(VFIOContainer *container,
+bool vfio_devices_all_running_and_mig_active(VFIOContainerBase *bcontainer);
+bool vfio_devices_all_device_dirty_tracking(VFIOContainerBase *bcontainer);
+int vfio_devices_query_dirty_bitmap(VFIOContainerBase *bcontainer,
                                     VFIOBitmap *vbmap, hwaddr iova,
                                     hwaddr size);
-int vfio_get_dirty_bitmap(VFIOContainer *container, uint64_t iova,
+int vfio_get_dirty_bitmap(VFIOContainerBase *bcontainer, uint64_t iova,
                                  uint64_t size, ram_addr_t ram_addr);
 #endif /* HW_VFIO_VFIO_COMMON_H */
-- 
2.39.3