OvmfPkg/SmmCpuFeaturesLib: drop obsolete API implementation

Commit 0426115b6738 ("UefiCpuPkg: Remove unused API in
SmmCpuFeaturesLib.h", 2022-12-21) removed the declaration of the function
SmmCpuFeaturesAllocatePageTableMemory() from the "SmmCpuFeaturesLib.h"
library class header.

Remove the API's (null-)implementation from OvmfPkg/SmmCpuFeaturesLib as
well.

Testing: OVMF builds, boots, and suspends/resumes (see earlier in this
series).

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Bugzilla: https://bugzilla.tianocore.org/show_bug.cgi?id=4235
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>

1 files changed, 0 insertions, 31 deletions

diff --git a/OvmfPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c b/OvmfPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c
index 9297cc5fa9..6693666d04 100644
--- a/OvmfPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c
+++ b/OvmfPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c
@@ -1348,34 +1348,3 @@ SmmCpuFeaturesCompleteSmmReadyToLock (
   )

 {

 }

-

-/**

-  This API provides a method for a CPU to allocate a specific region for

-  storing page tables.

-

-  This API can be called more once to allocate memory for page tables.

-

-  Allocates the number of 4KB pages of type EfiRuntimeServicesData and returns

-  a pointer to the allocated buffer.  The buffer returned is aligned on a 4KB

-  boundary.  If Pages is 0, then NULL is returned.  If there is not enough

-  memory remaining to satisfy the request, then NULL is returned.

-

-  This function can also return NULL if there is no preference on where the

-  page tables are allocated in SMRAM.

-

-  @param  Pages                 The number of 4 KB pages to allocate.

-

-  @return A pointer to the allocated buffer for page tables.

-  @retval NULL      Fail to allocate a specific region for storing page tables,

-                    Or there is no preference on where the page tables are

-                    allocated in SMRAM.

-

-**/

-VOID *

-EFIAPI

-SmmCpuFeaturesAllocatePageTableMemory (

-  IN UINTN  Pages

-  )

-{

-  return NULL;

-}