diff options
| author | Xie, Yuanhao <yuanhao.xie@intel.com> | 2023-03-01 14:09:49 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2023-03-07 08:14:59 +0000 |
| commit | e9782e69070c3a876f6bc1af966603cc1fc90320 (patch) | |
| tree | 25ca57ec53b56189cf07127d9a6a6dd5874493f4 /UefiCpuPkg | |
| parent | a6f799e7fdb6389178485ddd36f472df100cebba (diff) | |
| download | edk2-e9782e69070c3a876f6bc1af966603cc1fc90320.tar.gz edk2-e9782e69070c3a876f6bc1af966603cc1fc90320.tar.bz2 edk2-e9782e69070c3a876f6bc1af966603cc1fc90320.zip | |
UefiCpuPkg: Allocate contiguous memory for stacks and APs loop.
Cc: Guo Dong <guo.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Sean Rhodes <sean@starlabs.systems>
Cc: James Lu <james.lu@intel.com>
Cc: Gua Guo <gua.guo@intel.com>
Signed-off-by: Yuanhao Xie <yuanhao.xie@intel.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Diffstat (limited to 'UefiCpuPkg')
| -rw-r--r-- | UefiCpuPkg/Library/MpInitLib/DxeMpLib.c | 40 |
1 files changed, 17 insertions, 23 deletions
diff --git a/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c b/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c index e9ac858f4f..224215878c 100644 --- a/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c +++ b/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c @@ -480,11 +480,12 @@ InitMpGlobalData ( {
EFI_STATUS Status;
EFI_PHYSICAL_ADDRESS Address;
- UINTN ApSafeBufferSize;
UINTN Index;
EFI_GCD_MEMORY_SPACE_DESCRIPTOR MemDesc;
UINTN StackBase;
CPU_INFO_IN_HOB *CpuInfoInHob;
+ UINTN StackPages;
+ UINTN FuncPages;
SaveCpuMpData (CpuMpData);
@@ -547,16 +548,23 @@ InitMpGlobalData ( // Allocating it in advance since memory services are not available in
// Exit Boot Services callback function.
//
- ApSafeBufferSize = EFI_PAGES_TO_SIZE (
- EFI_SIZE_TO_PAGES (
- CpuMpData->AddressMap.RelocateApLoopFuncSize
- )
- );
+ // +------------+ (TopOfApStack)
+ // | Stack * N |
+ // +------------+ (stack base, 4k aligned)
+ // | Padding |
+ // +------------+
+ // | Ap Loop |
+ // +------------+ ((low address, 4k-aligned)
+ //
+
+ StackPages = EFI_SIZE_TO_PAGES (CpuMpData->CpuCount * AP_SAFE_STACK_SIZE);
+ FuncPages = EFI_SIZE_TO_PAGES (CpuMpData->AddressMap.RelocateApLoopFuncSize);
+
Address = BASE_4GB - 1;
Status = gBS->AllocatePages (
AllocateMaxAddress,
EfiReservedMemoryType,
- EFI_SIZE_TO_PAGES (ApSafeBufferSize),
+ StackPages + FuncPages,
&Address
);
ASSERT_EFI_ERROR (Status);
@@ -575,26 +583,12 @@ InitMpGlobalData ( if (!EFI_ERROR (Status)) {
gDS->SetMemorySpaceAttributes (
Address,
- ApSafeBufferSize,
+ EFI_PAGES_TO_SIZE (FuncPages),
MemDesc.Attributes & (~EFI_MEMORY_XP)
);
}
- ApSafeBufferSize = EFI_PAGES_TO_SIZE (
- EFI_SIZE_TO_PAGES (
- CpuMpData->CpuCount * AP_SAFE_STACK_SIZE
- )
- );
- Address = BASE_4GB - 1;
- Status = gBS->AllocatePages (
- AllocateMaxAddress,
- EfiReservedMemoryType,
- EFI_SIZE_TO_PAGES (ApSafeBufferSize),
- &Address
- );
- ASSERT_EFI_ERROR (Status);
-
- mReservedTopOfApStack = (UINTN)Address + ApSafeBufferSize;
+ mReservedTopOfApStack = (UINTN)Address + EFI_PAGES_TO_SIZE (StackPages+FuncPages);
ASSERT ((mReservedTopOfApStack & (UINTN)(CPU_STACK_ALIGNMENT - 1)) == 0);
CopyMem (
mReservedApLoop.Data,
|