qemu-kvm/SOURCES/kvm-vfio-spapr-switch-to-spapr-IOMMU-BE-add-del_section_.patch

From 3b7f044f15b4a9daf4ad7eda58777aba6dbe3fc0 Mon Sep 17 00:00:00 2001
From: Zhenzhong Duan <zhenzhong.duan@intel.com>
Date: Thu, 2 Nov 2023 15:12:43 +0800
Subject: [PATCH 018/101] vfio/spapr: switch to spapr IOMMU BE
 add/del_section_window
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

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: [17/67] a0d9f1f2d4d2592f3d9fc2ee5b2c38236a986e38 (eauger1/centos-qemu-kvm)

No functional change intended.

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 233309e8e4c158af6c6b126d5ad021bae40a918a)
Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
 hw/vfio/common.c                      |  8 ++------
 hw/vfio/container-base.c              | 21 +++++++++++++++++++++
 hw/vfio/spapr.c                       | 19 ++++++++++++++-----
 include/hw/vfio/vfio-common.h         |  5 -----
 include/hw/vfio/vfio-container-base.h |  5 +++++
 5 files changed, 42 insertions(+), 16 deletions(-)

diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index 483ba82089..572ae7c934 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -571,8 +571,6 @@ static void vfio_listener_region_add(MemoryListener *listener,
 {
     VFIOContainerBase *bcontainer = container_of(listener, VFIOContainerBase,
                                                  listener);
-    VFIOContainer *container = container_of(bcontainer, VFIOContainer,
-                                            bcontainer);
     hwaddr iova, end;
     Int128 llend, llsize;
     void *vaddr;
@@ -595,7 +593,7 @@ static void vfio_listener_region_add(MemoryListener *listener,
         return;
     }
 
-    if (vfio_container_add_section_window(container, section, &err)) {
+    if (vfio_container_add_section_window(bcontainer, section, &err)) {
         goto fail;
     }
 
@@ -738,8 +736,6 @@ static void vfio_listener_region_del(MemoryListener *listener,
 {
     VFIOContainerBase *bcontainer = container_of(listener, VFIOContainerBase,
                                                  listener);
-    VFIOContainer *container = container_of(bcontainer, VFIOContainer,
-                                            bcontainer);
     hwaddr iova, end;
     Int128 llend, llsize;
     int ret;
@@ -818,7 +814,7 @@ static void vfio_listener_region_del(MemoryListener *listener,
 
     memory_region_unref(section->mr);
 
-    vfio_container_del_section_window(container, section);
+    vfio_container_del_section_window(bcontainer, section);
 }
 
 typedef struct VFIODirtyRanges {
diff --git a/hw/vfio/container-base.c b/hw/vfio/container-base.c
index 0177f43741..71f7274973 100644
--- a/hw/vfio/container-base.c
+++ b/hw/vfio/container-base.c
@@ -31,6 +31,27 @@ int vfio_container_dma_unmap(VFIOContainerBase *bcontainer,
     return bcontainer->ops->dma_unmap(bcontainer, iova, size, iotlb);
 }
 
+int vfio_container_add_section_window(VFIOContainerBase *bcontainer,
+                                      MemoryRegionSection *section,
+                                      Error **errp)
+{
+    if (!bcontainer->ops->add_window) {
+        return 0;
+    }
+
+    return bcontainer->ops->add_window(bcontainer, section, errp);
+}
+
+void vfio_container_del_section_window(VFIOContainerBase *bcontainer,
+                                       MemoryRegionSection *section)
+{
+    if (!bcontainer->ops->del_window) {
+        return;
+    }
+
+    return bcontainer->ops->del_window(bcontainer, section);
+}
+
 int vfio_container_set_dirty_page_tracking(VFIOContainerBase *bcontainer,
                                            bool start)
 {
diff --git a/hw/vfio/spapr.c b/hw/vfio/spapr.c
index e1a6b35563..5be1911aad 100644
--- a/hw/vfio/spapr.c
+++ b/hw/vfio/spapr.c
@@ -319,10 +319,13 @@ static int vfio_spapr_create_window(VFIOContainer *container,
     return 0;
 }
 
-int vfio_container_add_section_window(VFIOContainer *container,
-                                      MemoryRegionSection *section,
-                                      Error **errp)
+static int
+vfio_spapr_container_add_section_window(VFIOContainerBase *bcontainer,
+                                        MemoryRegionSection *section,
+                                        Error **errp)
 {
+    VFIOContainer *container = container_of(bcontainer, VFIOContainer,
+                                            bcontainer);
     VFIOHostDMAWindow *hostwin;
     hwaddr pgsize = 0;
     int ret;
@@ -407,9 +410,13 @@ int vfio_container_add_section_window(VFIOContainer *container,
     return 0;
 }
 
-void vfio_container_del_section_window(VFIOContainer *container,
-                                       MemoryRegionSection *section)
+static void
+vfio_spapr_container_del_section_window(VFIOContainerBase *bcontainer,
+                                        MemoryRegionSection *section)
 {
+    VFIOContainer *container = container_of(bcontainer, VFIOContainer,
+                                            bcontainer);
+
     if (container->iommu_type != VFIO_SPAPR_TCE_v2_IOMMU) {
         return;
     }
@@ -430,6 +437,8 @@ static VFIOIOMMUOps vfio_iommu_spapr_ops;
 static void setup_spapr_ops(VFIOContainerBase *bcontainer)
 {
     vfio_iommu_spapr_ops = *bcontainer->ops;
+    vfio_iommu_spapr_ops.add_window = vfio_spapr_container_add_section_window;
+    vfio_iommu_spapr_ops.del_window = vfio_spapr_container_del_section_window;
     bcontainer->ops = &vfio_iommu_spapr_ops;
 }
 
diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h
index b9e5a0e64b..055f679363 100644
--- a/include/hw/vfio/vfio-common.h
+++ b/include/hw/vfio/vfio-common.h
@@ -169,11 +169,6 @@ VFIOAddressSpace *vfio_get_address_space(AddressSpace *as);
 void vfio_put_address_space(VFIOAddressSpace *space);
 
 /* SPAPR specific */
-int vfio_container_add_section_window(VFIOContainer *container,
-                                      MemoryRegionSection *section,
-                                      Error **errp);
-void vfio_container_del_section_window(VFIOContainer *container,
-                                       MemoryRegionSection *section);
 int vfio_spapr_container_init(VFIOContainer *container, Error **errp);
 void vfio_spapr_container_deinit(VFIOContainer *container);
 
diff --git a/include/hw/vfio/vfio-container-base.h b/include/hw/vfio/vfio-container-base.h
index f62a14ac73..4b6f017c6f 100644
--- a/include/hw/vfio/vfio-container-base.h
+++ b/include/hw/vfio/vfio-container-base.h
@@ -75,6 +75,11 @@ 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_add_section_window(VFIOContainerBase *bcontainer,
+                                      MemoryRegionSection *section,
+                                      Error **errp);
+void vfio_container_del_section_window(VFIOContainerBase *bcontainer,
+                                       MemoryRegionSection *section);
 int vfio_container_set_dirty_page_tracking(VFIOContainerBase *bcontainer,
                                            bool start);
 int vfio_container_query_dirty_bitmap(VFIOContainerBase *bcontainer,
-- 
2.39.3