Files
system76-edk2/UefiCpuPkg/Library/VmgExitLibNull/VmTdExitNull.c
Min Xu eddcba40b5 UefiCpuPkg: Extend VmgExitLibNull to handle #VE exception
RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429

VmgExitLib performs the necessary processing to handle a #VC exception.
VmgExitLibNull is a NULL instance of VmgExitLib which provides a
default limited interface. In this commit VmgExitLibNull is extended to
handle a #VE exception with a default limited interface. A full feature
version of #VE handler will be created later.

Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
2022-04-02 08:15:12 +00:00

39 lines
1.0 KiB
C

/** @file
Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Base.h>
#include <Uefi.h>
#include <Library/VmgExitLib.h>
/**
Handle a #VE exception.
Performs the necessary processing to handle a #VE exception.
@param[in, out] ExceptionType Pointer to an EFI_EXCEPTION_TYPE to be set
as value to use on error.
@param[in, out] SystemContext Pointer to EFI_SYSTEM_CONTEXT
@retval EFI_SUCCESS Exception handled
@retval EFI_UNSUPPORTED #VE not supported, (new) exception value to
propagate provided
@retval EFI_PROTOCOL_ERROR #VE handling failed, (new) exception value to
propagate provided
**/
EFI_STATUS
EFIAPI
VmTdExitHandleVe (
IN OUT EFI_EXCEPTION_TYPE *ExceptionType,
IN OUT EFI_SYSTEM_CONTEXT SystemContext
)
{
*ExceptionType = VE_EXCEPTION;
return EFI_UNSUPPORTED;
}