[Qemu-devel] [PATCH 37/38] xen_pt: reclaim memory in instance_finalize instead of exit

[Paolo Bonzini]

Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
 hw/xen/xen_pt.c             | 10 ++++++++++
 hw/xen/xen_pt_config_init.c |  3 ---
 hw/xen/xen_pt_msi.c         |  8 +++++++-
 3 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/hw/xen/xen_pt.c b/hw/xen/xen_pt.c
index ca2d460..592c472 100644
--- a/hw/xen/xen_pt.c
+++ b/hw/xen/xen_pt.c
@@ -806,7 +806,16 @@ static void xen_pt_unregister_device(PCIDevice *d)
         }
     }
 
+    xen_pt_msix_delete(s);
+}
+
+static void xen_pt_instance_finalize(Object *obj)
+{
+    PCIDevice *d = PCI_DEVICE(obj);
+    XenPCIPassthroughState *s = DO_UPCAST(XenPCIPassthroughState, dev, d);
+
     /* delete all emulated config registers */
+    xen_pt_msix_free(s);
     xen_pt_config_delete(s);
 
     xen_pt_unregister_regions(s);
@@ -840,6 +849,7 @@ static const TypeInfo xen_pci_passthrough_info = {
     .parent = TYPE_PCI_DEVICE,
     .instance_size = sizeof(XenPCIPassthroughState),
     .class_init = xen_pci_passthrough_class_init,
+    .instance_finalize = xen_pt_instance_finalize,
 };
 
 static void xen_pci_passthrough_register_types(void)
diff --git a/hw/xen/xen_pt_config_init.c b/hw/xen/xen_pt_config_init.c
index 8ccc2e4..25f6334 100644
--- a/hw/xen/xen_pt_config_init.c
+++ b/hw/xen/xen_pt_config_init.c
@@ -1861,9 +1861,6 @@ void xen_pt_config_delete(XenPCIPassthroughState *s)
     struct XenPTReg *reg, *next_reg;
 
     /* free MSI/MSI-X info table */
-    if (s->msix) {
-        xen_pt_msix_delete(s);
-    }
     if (s->msi) {
         g_free(s->msi);
     }
diff --git a/hw/xen/xen_pt_msi.c b/hw/xen/xen_pt_msi.c
index 6fbe0cc..5bcbbf2 100644
--- a/hw/xen/xen_pt_msi.c
+++ b/hw/xen/xen_pt_msi.c
@@ -605,6 +605,13 @@ void xen_pt_msix_delete(XenPCIPassthroughState *s)
         return;
     }
 
+    memory_region_del_subregion(&s->bar[msix->bar_index], &msix->mmio);
+}
+
+void xen_pt_msix_free(XenPCIPassthroughState *s)
+{
+    XenPTMSIX *msix = s->msix;
+
     /* unmap the MSI-X memory mapped register area */
     if (msix->phys_iomem_base) {
         XEN_PT_LOG(&s->dev, "unmapping physical MSI-X table from %p\n",
@@ -613,7 +620,6 @@ void xen_pt_msix_delete(XenPCIPassthroughState *s)
                + msix->table_offset_adjust);
     }
 
-    memory_region_del_subregion(&s->bar[msix->bar_index], &msix->mmio);
     memory_region_destroy(&msix->mmio);
 
     g_free(s->msix);
-- 
1.8.3.1