From 365b9433458e96df71e1583035d462b5f18d051d Mon Sep 17 00:00:00 2001
From: Brijesh Singh <brijesh.singh@amd.com>
Date: Mon, 14 Aug 2017 07:36:24 -0400
Subject: [PATCH] OvmfPkg/Virtio10Dxe: supply missing BUS_MASTER attribute

Virtio devices read and write guest RAM (they don't just decode their IO
and/or MMIO BARs), which translates to "bus master".

Suggested-by: Laszlo Ersek <lersek@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
[lersek@redhat.com: expand commit message body]
[lersek@redhat.com: remove superfluous whitespace in assignment]
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
---
 OvmfPkg/Virtio10Dxe/Virtio10.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/OvmfPkg/Virtio10Dxe/Virtio10.c b/OvmfPkg/Virtio10Dxe/Virtio10.c
index a8a6a58c3f..d7ea4432bc 100644
--- a/OvmfPkg/Virtio10Dxe/Virtio10.c
+++ b/OvmfPkg/Virtio10Dxe/Virtio10.c
@@ -906,7 +906,7 @@ Virtio10BindingStart (
     goto ClosePciIo;
   }
 
-  SetAttributes = 0;
+  SetAttributes = EFI_PCI_IO_ATTRIBUTE_BUS_MASTER;
   UpdateAttributes (&Device->CommonConfig, &SetAttributes);
   UpdateAttributes (&Device->NotifyConfig, &SetAttributes);
   UpdateAttributes (&Device->SpecificConfig, &SetAttributes);