[Patch] MdeModulePkg/Gcd: Filter gCpu->SetMemoryAttributes() calls

[Patch] MdeModulePkg/Gcd: Filter gCpu->SetMemoryAttributes() calls

[Kinney, Michael D]

This patch fixes an issue with VlvTbltDevicePkg introduced
by commit:

https://github.com/tianocore/edk2/commit/5b91bf82c67b586b9588cbe4bbffa1588f6b5926

This patch filters the call to gCpu->SetMemoryAttributes()
if the requested attributes is 0.  It also removes the #define
INVALID_CPU_ARCH_ATTRIBUTES that is no longer used.

Cc: Heyi Guo <heyi.guo@linaro.org>
Cc: Yi Li <phoenix.liyi@huawei.com>
Cc: Renhao Liang <liangrenhao@huawei.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
---
 MdeModulePkg/Core/Dxe/Gcd/Gcd.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/MdeModulePkg/Core/Dxe/Gcd/Gcd.c b/MdeModulePkg/Core/Dxe/Gcd/Gcd.c
index 907245a3f5..45ed6280db 100644
--- a/MdeModulePkg/Core/Dxe/Gcd/Gcd.c
+++ b/MdeModulePkg/Core/Dxe/Gcd/Gcd.c
@@ -48,8 +48,6 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #define NONEXCLUSIVE_MEMORY_ATTRIBUTES (EFI_MEMORY_XP | EFI_MEMORY_RP | \
                                         EFI_MEMORY_RO)
 
-#define INVALID_CPU_ARCH_ATTRIBUTES   0xffffffff
-
 //
 // Module Variables
 //
@@ -873,7 +871,7 @@ CoreConvertSpace (
     // Call CPU Arch Protocol to attempt to set attributes on the range
     //
     CpuArchAttributes = ConverToCpuArchAttributes (Attributes);
-    if (CpuArchAttributes != INVALID_CPU_ARCH_ATTRIBUTES) {
+    if (CpuArchAttributes != 0) {
       if (gCpu == NULL) {
         Status = EFI_NOT_AVAILABLE_YET;
       } else {
-- 
2.14.2.windows.3