From 245c643cc8b73240c3b88cb55b2911b285a8c10d Mon Sep 17 00:00:00 2001
From: Laszlo Ersek <lersek@redhat.com>
Date: Tue, 13 Mar 2018 19:32:55 +0100
Subject: [PATCH] OvmfPkg/PlatformBootManagerLib: minimize the set of connected
 devices

Prefer ConnectDevicesFromQemu() to EfiBootManagerConnectAll().

Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Shannon Zhao <zhaoshenglong@huawei.com>
Cc: Xiang Zheng <xiang.zheng@linaro.org>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> # ArmVirtQemu
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Xiang Zheng <xiang.zheng@linaro.org>
---
 .../Library/PlatformBootManagerLib/BdsPlatform.c | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c b/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c
index 025252e72b..5ef0e82890 100644
--- a/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c
+++ b/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c
@@ -1346,7 +1346,8 @@ Returns:
 
 --*/
 {
-  UINTN Index;
+  UINTN         Index;
+  RETURN_STATUS Status;
 
   DEBUG ((EFI_D_INFO, "PlatformBdsConnectSequence\n"));
 
@@ -1365,11 +1366,14 @@ Returns:
     Index++;
   }
 
-  //
-  // Just use the simple policy to connect all devices
-  //
-  DEBUG ((EFI_D_INFO, "EfiBootManagerConnectAll\n"));
-  EfiBootManagerConnectAll ();
+  Status = ConnectDevicesFromQemu ();
+  if (RETURN_ERROR (Status)) {
+    //
+    // Just use the simple policy to connect all devices
+    //
+    DEBUG ((DEBUG_INFO, "EfiBootManagerConnectAll\n"));
+    EfiBootManagerConnectAll ();
+  }
 
   PciAcpiInitialization ();
 }