[PATCH v1 5/7] OvmfPkg: Invoke GetPhysicalAddressBits() and remove the duplicated code

[Yu Pu <yu.pu@intel.com>]

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3394

Invoke GetPhysicalAddressBits() defined in UefiCpuPkg for CPU physical address
mask calculation and remove the duplicated code in
OvmfPkg\XenPlatformPei\MemDetect.c.

    Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
    Cc: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Yu Pu <yu.pu@intel.com>
---
 OvmfPkg/XenPlatformPei/MemDetect.c | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

diff --git a/OvmfPkg/XenPlatformPei/MemDetect.c b/OvmfPkg/XenPlatformPei/MemDetect.c
index d412d1f4db6f..bd24612c21ef 100644
--- a/OvmfPkg/XenPlatformPei/MemDetect.c
+++ b/OvmfPkg/XenPlatformPei/MemDetect.c
@@ -30,6 +30,7 @@ Module Name:
 #include <Library/PciLib.h>
 #include <Library/PeimEntryPoint.h>
 #include <Library/ResourcePublicationLib.h>
+#include <Library/UefiCpuLib.h>
 
 #include "Platform.h"
 #include "Cmos.h"
@@ -180,15 +181,7 @@ AddressWidthInitialization (
   VOID
   )
 {
-  UINT32  RegEax;
-
-  AsmCpuid (0x80000000, &RegEax, NULL, NULL, NULL);
-  if (RegEax >= 0x80000008) {
-    AsmCpuid (0x80000008, &RegEax, NULL, NULL, NULL);
-    mPhysMemAddressWidth = (UINT8)RegEax;
-  } else {
-    mPhysMemAddressWidth = 36;
-  }
+  mPhysMemAddressWidth = GetPhysicalAddressBits(NULL, NULL);
 
   //
   // IA-32e paging translates 48-bit linear addresses to 52-bit physical addresses.
-- 
2.30.0.windows.2