diff --git a/kvm-vfio-region-Clarify-dma-buf-failure-messages.patch b/kvm-vfio-region-Clarify-dma-buf-failure-messages.patch
new file mode 100644
index 0000000..55ad8f6
--- /dev/null
+++ b/kvm-vfio-region-Clarify-dma-buf-failure-messages.patch
@@ -0,0 +1,67 @@
+From c5a8a9187f8395f35218cb6e301ee777f4a0da7b Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= <clg@redhat.com>
+Date: Wed, 15 Jul 2026 10:00:00 +0200
+Subject: [PATCH] vfio/region: Clarify dma-buf failure messages
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+RH-Author: Rodolfo Vick <None>
+RH-MergeRequest: 514: vfio/region: Clarify dma-buf failure messages
+RH-Jira: RHEL-224652
+RH-Acked-by: Cédric Le Goater <clg@redhat.com>
+RH-Acked-by: Eric Auger <eric.auger@redhat.com>
+RH-Commit: [1/1] 290b4b792bd444608b01bab64514a0e0725e9f89 (rovick1/qemu-kvm)
+
+The dma-buf failure messages in vfio_region_create_dma_buf() say "PCI
+BAR IOMMU mappings may fail", which suggests the BAR is broken. In
+practice, only P2P DMA is affected -- normal passthrough uses the mmap
+fallback.
+
+Reword both messages to mention P2P DMA explicitly and clarify that
+the mmap fallback is in use. Use warn_report_err_once() at the call
+site so per-BAR repetition on mdev devices is suppressed.
+
+Fixes: dcf1b77e834d ("hw/vfio/region: Create dmabuf for PCI BAR per region")
+Cc: Nicolin Chen <nicolinc@nvidia.com>
+Reviewed-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>
+Signed-off-by: Cédric Le Goater <clg@redhat.com>
+(cherry picked from commit 4b2e6505d59b7b16c6e15a2494942d00648e8510)
+---
+ hw/vfio/region.c | 11 +++++------
+ 1 file changed, 5 insertions(+), 6 deletions(-)
+
+diff --git a/hw/vfio/region.c b/hw/vfio/region.c
+index 1e9915fdd3..9258ab6847 100644
+--- a/hw/vfio/region.c
++++ b/hw/vfio/region.c
+@@ -316,13 +316,12 @@ static bool vfio_region_create_dma_buf(VFIORegion *region, Error **errp)
+     ret = vfio_device_get_feature(vbasedev, feature);
+     if (ret < 0) {
+         if (ret == -ENOTTY) {
+-            warn_report_once("VFIO dma-buf not supported in kernel: "
+-                             "PCI BAR IOMMU mappings may fail");
++            warn_report_once("VFIO dma-buf not supported in kernel, "
++                             "using mmap fallback, P2P DMA will not work");
+             return true;
+         }
+-        /* P2P DMA or exposing device memory use cases are not supported. */
+-        error_setg_errno(errp, -ret, "%s: failed to create dma-buf: "
+-                         "PCI BAR IOMMU mappings may fail",
++        error_setg_errno(errp, -ret, "%s: dma-buf unavailable, "
++                         "using mmap fallback, P2P DMA will not work",
+                          memory_region_name(region->mem));
+         return false;
+     }
+@@ -443,7 +442,7 @@ int vfio_region_mmap(VFIORegion *region)
+     }
+ 
+     if (!vfio_region_create_dma_buf(region, &local_err)) {
+-        error_report_err(local_err);
++        warn_report_err_once(local_err);
+     }
+ 
+     return 0;
+-- 
+2.52.0
+
diff --git a/qemu-kvm.spec b/qemu-kvm.spec
index 9c16ba0..f020522 100644
--- a/qemu-kvm.spec
+++ b/qemu-kvm.spec
@@ -143,7 +143,7 @@ Obsoletes: %{name}-block-ssh <= %{epoch}:%{version}                    \
 Summary: QEMU is a machine emulator and virtualizer
 Name: qemu-kvm
 Version: 10.1.0
-Release: 25%{?rcrel}%{?dist}%{?cc_suffix}
+Release: 26%{?rcrel}%{?dist}%{?cc_suffix}
 # Epoch because we pushed a qemu-1.0 package. AIUI this can't ever be dropped
 # Epoch 15 used for RHEL 8
 # Epoch 17 used for RHEL 9 (due to release versioning offset in RHEL 8.5)
@@ -1672,6 +1672,8 @@ Patch477: kvm-s390x-sclp-prevent-re-reading-the-sclp-header.patch
 Patch478: kvm-s390x-sclpcpi-check-event-length-field-before-readin.patch
 # For RHEL-192791 - RHEL10.0 - qemu s390x: interface harding fixes
 Patch479: kvm-s390x-css-firm-up-handling-of-chained-TIC-CCWs.patch
+# For RHEL-224652 - Backport  vfio/region: Clarify dma-buf failure messages 
+Patch480: kvm-vfio-region-Clarify-dma-buf-failure-messages.patch
 
 %if %{have_clang}
 BuildRequires: clang
@@ -2754,6 +2756,11 @@ useradd -r -u 107 -g qemu -G kvm -d / -s /sbin/nologin \
 %endif
 
 %changelog
+* Tue Aug 11 2026 Miroslav Rezanina <mrezanin@redhat.com> - 10.1.0-26
+- kvm-vfio-region-Clarify-dma-buf-failure-messages.patch [RHEL-224652]
+- Resolves: RHEL-224652
+  (Backport  vfio/region: Clarify dma-buf failure messages )
+
 * Mon Aug 03 2026 Miroslav Rezanina <mrezanin@redhat.com> - 10.1.0-25
 - kvm-hw-core-platform-bus-guard-platform_bus_get_mmio_add.patch [RHEL-180837]
 - kvm-hw-tpm-gate-PPI-support-on-tpm-tis-device-behind-a-d.patch [RHEL-180837]