From 212a2b9bb82738f9b87fdb13b96823ab57fc7ad9 Mon Sep 17 00:00:00 2001
From: Gerd Hoffmann <kraxel@redhat.com>
Date: Fri, 27 Aug 2021 21:44:55 +0800
Subject: [PATCH] OvmfPkg/VirtioMmioDeviceLib: virtio 1.0: Fix SetPageSize.

Nothing to do here for virtio 1.0 devices.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
---
 .../Library/VirtioMmioDeviceLib/VirtioMmioDeviceFunctions.c   | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDeviceFunctions.c b/OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDeviceFunctions.c
index b0d75fb1dd..50a4fd2100 100644
--- a/OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDeviceFunctions.c
+++ b/OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDeviceFunctions.c
@@ -151,7 +151,9 @@ VirtioMmioSetPageSize (
 
   Device = VIRTIO_MMIO_DEVICE_FROM_VIRTIO_DEVICE (This);
 
-  VIRTIO_CFG_WRITE (Device, VIRTIO_MMIO_OFFSET_GUEST_PAGE_SIZE, PageSize);
+  if (Device->Version == VIRTIO_MMIO_DEVICE_VERSION_0_95) {
+    VIRTIO_CFG_WRITE (Device, VIRTIO_MMIO_OFFSET_GUEST_PAGE_SIZE, PageSize);
+  }
 
   return EFI_SUCCESS;
 }
-- 
2.39.5