Re: [PATCH] UefiCpuPkg/CpuDxe: Do not ASSERT on AllocateMemorySpace() error

["Zeng, Star" <star.zeng@intel.com>]

Reviewed-by: Star Zeng <star.zeng@intel.com>

-----Original Message-----
From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org] On Behalf Of Jeff Fan
Sent: Friday, February 24, 2017 2:12 PM
To: edk2-devel@lists.01.org
Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Tian, Feng <feng.tian@intel.com>; Laszlo Ersek <lersek@redhat.com>; Zeng, Star <star.zeng@intel.com>
Subject: [edk2] [PATCH] UefiCpuPkg/CpuDxe: Do not ASSERT on AllocateMemorySpace() error

Platform PEI may add LOCAL APIC memory mapped space into EFI_HOB_MEMORY_ALLOCATION. Or platform may allocate this range before.

So, we skip AllocateMemorySpace()'s return status checking. Instead, we add one DEBUG message for possible trace.

https://bugzilla.tianocore.org/show_bug.cgi?id=390

This updating is suggested by Ersek's comments at https://www.mail-archive.com/edk2-devel@lists.01.org/msg22585.html

Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
---
 UefiCpuPkg/CpuDxe/CpuDxe.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/UefiCpuPkg/CpuDxe/CpuDxe.c b/UefiCpuPkg/CpuDxe/CpuDxe.c index 2fd2f31..4a5e282 100644
--- a/UefiCpuPkg/CpuDxe/CpuDxe.c
+++ b/UefiCpuPkg/CpuDxe/CpuDxe.c
@@ -1075,6 +1075,11 @@ AddLocalApicMemorySpace (
   Status = AddMemoryMappedIoSpace (BaseAddress, SIZE_4KB, EFI_MEMORY_UC);
   ASSERT_EFI_ERROR (Status);
 
+  //
+  // Try to allocate APIC memory mapped space, does not check return  
+ // status because it may be allocated by other driver, or DXE Core if  
+ // this range is built into Memory Allocation HOB.
+  //
   Status = gDS->AllocateMemorySpace (
                   EfiGcdAllocateAddress,
                   EfiGcdMemoryTypeMemoryMappedIo, @@ -1084,7 +1089,10 @@ AddLocalApicMemorySpace (
                   ImageHandle,
                   NULL
                   );
-  ASSERT_EFI_ERROR (Status);
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_INFO, "%a: %a: AllocateMemorySpace() Status - %r\n",
+                         gEfiCallerBaseName, __FUNCTION__, Status));  }
 }
 
 /**
-- 
2.9.3.windows.2

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