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UefiCpuPkg/CpuExceptionHandler: Add base support for the #VE exception 

RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429

Add base support to handle #VE exceptions. Update the common exception
handlers to invoke the VmTdExitHandleVe () function of the VmgExitLib
library when a #VE is encountered. A non-zero return code will propagate
to the targeted exception handler.

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>
This commit is contained in:
Min Xu 2021-07-18 10:20:21 +08:00 committed by mergify[bot]
parent daf8f642f3
commit de327f7d8a
2 changed files with 79 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

53
UefiCpuPkg/Library/CpuExceptionHandlerLib/PeiDxeSmmCpuException.c
View File

@ -24,25 +24,48 @@ CommonExceptionHandlerWorker (
IN EXCEPTION_HANDLER_DATA *ExceptionHandlerData
)
{
EFI_STATUS Status;
EXCEPTION_HANDLER_CONTEXT *ExceptionHandlerContext;
RESERVED_VECTORS_DATA *ReservedVectors;
EFI_CPU_INTERRUPT_HANDLER *ExternalInterruptHandler;
if (ExceptionType == VC_EXCEPTION) {
EFI_STATUS Status;
//
// #VC needs to be handled immediately upon enabling exception handling
// and therefore can't use the RegisterCpuInterruptHandler() interface.
//
// Handle the #VC:
// On EFI_SUCCESS - Exception has been handled, return
// On other - ExceptionType contains (possibly new) exception
// value
//
Status = VmgExitHandleVc (&ExceptionType, SystemContext);
if (!EFI_ERROR (Status)) {
return;
}
switch (ExceptionType) {
case VC_EXCEPTION:
//
// #VC needs to be handled immediately upon enabling exception handling
// and therefore can't use the RegisterCpuInterruptHandler() interface.
//
// Handle the #VC:
// On EFI_SUCCESS - Exception has been handled, return
// On other - ExceptionType contains (possibly new) exception
// value
//
Status = VmgExitHandleVc (&ExceptionType, SystemContext);
if (!EFI_ERROR (Status)) {
return;
}
break;
case VE_EXCEPTION:
//
// #VE needs to be handled immediately upon enabling exception handling
// and therefore can't use the RegisterCpuInterruptHandler() interface.
//
// Handle the #VE:
// On EFI_SUCCESS - Exception has been handled, return
// On other - ExceptionType contains (possibly new) exception
// value
//
Status = VmTdExitHandleVe (&ExceptionType, SystemContext);
if (!EFI_ERROR (Status)) {
return;
}
break;
default:
break;
}
ExceptionHandlerContext = (EXCEPTION_HANDLER_CONTEXT *)(UINTN)(SystemContext.SystemContextIa32);

57
UefiCpuPkg/Library/CpuExceptionHandlerLib/SecPeiCpuException.c
View File

@ -25,22 +25,47 @@ CommonExceptionHandler (
IN EFI_SYSTEM_CONTEXT SystemContext
)
{
if (ExceptionType == VC_EXCEPTION) {
EFI_STATUS Status;
//
// #VC needs to be handled immediately upon enabling exception handling
// and therefore can't use the RegisterCpuInterruptHandler() interface
// (which isn't supported under Sec and Pei anyway).
//
// Handle the #VC:
// On EFI_SUCCESS - Exception has been handled, return
// On other - ExceptionType contains (possibly new) exception
// value
//
Status = VmgExitHandleVc (&ExceptionType, SystemContext);
if (!EFI_ERROR (Status)) {
return;
}
EFI_STATUS Status;
switch (ExceptionType) {
case VC_EXCEPTION:
//
// #VC needs to be handled immediately upon enabling exception handling
// and therefore can't use the RegisterCpuInterruptHandler() interface
// (which isn't supported under Sec and Pei anyway).
//
// Handle the #VC:
// On EFI_SUCCESS - Exception has been handled, return
// On other - ExceptionType contains (possibly new) exception
// value
//
Status = VmgExitHandleVc (&ExceptionType, SystemContext);
if (!EFI_ERROR (Status)) {
return;
}
break;
case VE_EXCEPTION:
//
// #VE needs to be handled immediately upon enabling exception handling
// and therefore can't use the RegisterCpuInterruptHandler() interface
// (which isn't supported under Sec and Pei anyway).
//
// Handle the #VE:
// On EFI_SUCCESS - Exception has been handled, return
// On other - ExceptionType contains (possibly new) exception
// value
//
Status = VmTdExitHandleVe (&ExceptionType, SystemContext);
if (!EFI_ERROR (Status)) {
return;
}
break;
default:
break;
}
//