OvmfPkg/RiscVVirt: Disable Svpbmt extension

Disable Svpbmt extension as QEMU not enables it in default config.

Cc: Andrei Warkentin <andrei.warkentin@intel.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Sunil V L <sunilvl@ventanamicro.com>
Signed-off-by: Tuan Phan <tphan@ventanamicro.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
diff --git a/OvmfPkg/RiscVVirt/RiscVVirt.dsc.inc b/OvmfPkg/RiscVVirt/RiscVVirt.dsc.inc
index 6bc7c90..b8338d2 100644
--- a/OvmfPkg/RiscVVirt/RiscVVirt.dsc.inc
+++ b/OvmfPkg/RiscVVirt/RiscVVirt.dsc.inc
@@ -203,7 +203,7 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdInstallAcpiSdtProtocol|TRUE

 

 [PcdsFixedAtBuild.common]

-  gEfiMdePkgTokenSpaceGuid.PcdRiscVFeatureOverride|0xFFFFFFFFFFFFFFFC

+  gEfiMdePkgTokenSpaceGuid.PcdRiscVFeatureOverride|0xFFFFFFFFFFFFFFF8

   gEfiMdePkgTokenSpaceGuid.PcdMaximumUnicodeStringLength|1000000

   gEfiMdePkgTokenSpaceGuid.PcdMaximumAsciiStringLength|1000000

   gEfiMdePkgTokenSpaceGuid.PcdMaximumLinkedListLength|0