mirror of
https://git.proxmox.com/git/mirror_edk2
synced 2025-11-04 14:48:56 +00:00
5277540e37
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=2198 Add base support to handle #VC exceptions. Update the common exception handlers to invoke the VmgExitHandleVc () function of the VmgExitLib library when a #VC is encountered. A non-zero return code will propagate to the targeted exception handler. Under SEV-ES, a DR7 read or write intercept generates a #VC exception. To avoid exception recursion, a #VC exception will not try to read and push the actual debug registers into the EFI_SYSTEM_CONTEXT_X64 struct and instead push zeroes. The #VC exception handler does not make use of the debug registers from the saved context and the exception processing exit code does not attempt to restore the debug register values. Cc: Eric Dong <eric.dong@intel.com> Cc: Ray Ni <ray.ni@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Eric Dong <eric.dong@intel.com> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
60 lines
1.4 KiB
INI
60 lines
1.4 KiB
INI
## @file
|
|
# CPU Exception Handler library instance for PEI module.
|
|
#
|
|
# Copyright (c) 2016 - 2018, Intel Corporation. All rights reserved.<BR>
|
|
# SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
#
|
|
##
|
|
|
|
[Defines]
|
|
INF_VERSION = 0x00010005
|
|
BASE_NAME = PeiCpuExceptionHandlerLib
|
|
MODULE_UNI_FILE = PeiCpuExceptionHandlerLib.uni
|
|
FILE_GUID = 980DDA67-44A6-4897-99E6-275290B71F9E
|
|
MODULE_TYPE = PEIM
|
|
VERSION_STRING = 1.1
|
|
LIBRARY_CLASS = CpuExceptionHandlerLib|PEI_CORE PEIM
|
|
|
|
#
|
|
# The following information is for reference only and not required by the build tools.
|
|
#
|
|
# VALID_ARCHITECTURES = IA32 X64
|
|
#
|
|
|
|
[Sources.Ia32]
|
|
Ia32/ExceptionHandlerAsm.nasm
|
|
Ia32/ExceptionTssEntryAsm.nasm
|
|
Ia32/ArchExceptionHandler.c
|
|
Ia32/ArchInterruptDefs.h
|
|
|
|
[Sources.X64]
|
|
X64/Xcode5ExceptionHandlerAsm.nasm
|
|
X64/ArchExceptionHandler.c
|
|
X64/ArchInterruptDefs.h
|
|
|
|
[Sources.common]
|
|
CpuExceptionCommon.h
|
|
CpuExceptionCommon.c
|
|
PeiCpuException.c
|
|
PeiDxeSmmCpuException.c
|
|
|
|
[Packages]
|
|
MdePkg/MdePkg.dec
|
|
MdeModulePkg/MdeModulePkg.dec
|
|
UefiCpuPkg/UefiCpuPkg.dec
|
|
|
|
[LibraryClasses]
|
|
BaseLib
|
|
SerialPortLib
|
|
PrintLib
|
|
LocalApicLib
|
|
PeCoffGetEntryPointLib
|
|
HobLib
|
|
MemoryAllocationLib
|
|
SynchronizationLib
|
|
VmgExitLib
|
|
|
|
[Pcd]
|
|
gEfiMdeModulePkgTokenSpaceGuid.PcdCpuStackGuard # CONSUMES
|
|
|