Revert "OvmfPkg/PlatformPei: reorder the 32-bit PCI window vs. the PCIEXBAR on q35"

[mirror_edk2.git] / OvmfPkg / OvmfPkgIa32X64.dsc

diff --git a/OvmfPkg/OvmfPkgIa32X64.dsc b/OvmfPkg/OvmfPkgIa32X64.dsc
index 679d4eb8dd363d95573b989af9edbe33a858303d..eade8f62d3de0e99939756a19ac6653354f8ce92 100644 (file)
--- a/OvmfPkg/OvmfPkgIa32X64.dsc
+++ b/OvmfPkg/OvmfPkgIa32X64.dsc
@@ -495,7 +495,10 @@
   # This PCD is used to set the base address of the PCI express hierarchy. It\r
   # is only consulted when OVMF runs on Q35. In that case it is programmed into\r
   # the PCIEXBAR register.\r
-  gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress|0xE0000000\r
+  #\r
+  # On Q35 machine types that QEMU intends to support in the long term, QEMU\r
+  # never lets the RAM below 4 GB exceed 2 GB.\r
+  gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress|0x80000000\r
 \r
 !ifdef $(SOURCE_DEBUG_ENABLE)\r
   gEfiSourceLevelDebugPkgTokenSpaceGuid.PcdDebugLoadImageMethod|0x2\r