diff --git a/vfio-Add-vfio_prereg_listener_log_clear-to-re-enable.patch b/vfio-Add-vfio_prereg_listener_log_clear-to-re-enable.patch
new file mode 100644
index 0000000..e4da89b
--- /dev/null
+++ b/vfio-Add-vfio_prereg_listener_log_clear-to-re-enable.patch
@@ -0,0 +1,84 @@
+From f959faa36fc100894a44f2e6cd7e02a183ba142a Mon Sep 17 00:00:00 2001
+From: Kunkun Jiang <jiangkunkun@huawei.com>
+Date: Sat, 31 Jul 2021 09:40:24 +0800
+Subject: [PATCH] vfio: Add vfio_prereg_listener_log_clear to re-enable mark
+ dirty pages
+
+When tracking dirty pages, we just need to pay attention to stage 2
+mappings. Legacy vfio_listener_log_clear cannot be used in nested
+stage. This patch adds vfio_prereg_listener_log_clear to re-enable
+dirty pages in nested mode.
+
+Signed-off-by: Kunkun Jiang <jiangkunkun@huawei.com>
+---
+ hw/vfio/common.c | 40 +++++++++++++++++++++++++++++++++++++++-
+ 1 file changed, 39 insertions(+), 1 deletion(-)
+
+diff --git a/hw/vfio/common.c b/hw/vfio/common.c
+index 6b00bd4c2f..b5f9ba816e 100644
+--- a/hw/vfio/common.c
++++ b/hw/vfio/common.c
+@@ -1550,6 +1550,43 @@ static int vfio_physical_log_clear(VFIOContainer *container,
+     return ret;
+ }
+ 
++static void vfio_prereg_listener_log_clear(MemoryListener *listener,
++                                           MemoryRegionSection *section)
++{
++    VFIOContainer *container =
++        container_of(listener, VFIOContainer, prereg_listener);
++
++    if (!memory_region_is_ram(section->mr)) {
++        return;
++    }
++
++    vfio_physical_log_clear(container, section);
++}
++
++static int vfio_clear_dirty_bitmap(VFIOContainer *container,
++                                   MemoryRegionSection *section)
++{
++    if (memory_region_is_iommu(section->mr)) {
++        /*
++         * In nested mode, stage 2 (gpa->hpa) and stage 1 (giova->gpa) are
++         * set up separately. It is inappropriate to pass 'giova' to kernel
++         * to get dirty pages. We only need to focus on stage 2 mapping when
++         * marking dirty pages.
++         */
++        if (container->iommu_type == VFIO_TYPE1_NESTING_IOMMU) {
++            return 0;
++        }
++
++        /*
++         * TODO: x86. With the log_clear() interface added, x86 may inplement
++         * its own method.
++         */
++    }
++
++    /* Here we assume that memory_region_is_ram(section->mr) == true */
++    return vfio_physical_log_clear(container, section);
++}
++
+ static void vfio_listener_log_clear(MemoryListener *listener,
+                                     MemoryRegionSection *section)
+ {
+@@ -1561,7 +1598,7 @@ static void vfio_listener_log_clear(MemoryListener *listener,
+     }
+ 
+     if (vfio_devices_all_dirty_tracking(container)) {
+-        vfio_physical_log_clear(container, section);
++        vfio_clear_dirty_bitmap(container, section);
+     }
+ }
+ 
+@@ -1578,6 +1615,7 @@ static MemoryListener vfio_memory_prereg_listener = {
+     .region_add = vfio_prereg_listener_region_add,
+     .region_del = vfio_prereg_listener_region_del,
+     .log_sync = vfio_prereg_listener_log_sync,
++    .log_clear = vfio_prereg_listener_log_clear,
+ };
+ 
+ static void vfio_listener_release(VFIOContainer *container)
+-- 
+2.27.0
+