Re: [PATCH 0/4] Support non-stop mode in heap guard and null detection

["Wang, Jian J" <jian.j.wang@intel.com>]

Forgot to mention the OS boot validation:

Platform: OVMF
OS (x64): Fedora 26, Ubuntu 18.04, Windows 10, Windows 7

Regards,
Jian


> -----Original Message-----
> From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org]
> Sent: Monday, August 20, 2018 2:42 PM
> To: edk2-devel@lists.01.org
> Subject: [edk2] [PATCH 0/4] Support non-stop mode in heap guard and null
> detection
> 
> Background:
> Heap Guard and NULL Pointer Detection are very useful features to detect
> code flaw in EDK II. If an issue is detected, #PF exception will be
> triggered and the BIOS will enter into dead loop, which is the default
> behavior of exception handling. From QA perspective, this default behavior
> will block them to collect all tests result in reasonable time.
> 
> Solution:
> This patch series update CpuDxe, PiSmmCpuDxeSmm and
> CpuExceptionHandlerLib
> to allow the code to continue execution after #PF. The mechanism behind it
> is the same as SMM Profile feature, in which a special #PF handler is
> registered to set the page causing #PF to be 'present' and setup single
> steop trap, then return the control back to the instruction accessing that
> page. Once the instruction is re-executed, a #DB is triggered and a special
> handler for it will be called to reset the page back to 'not-present'.
> 
> Usage:
> The non-stop mode is enabled/disabled by BIT6 of following PCDs
> 
>   gEfiMdeModulePkgTokenSpaceGuid.PcdHeapGuardPropertyMask
>   gEfiMdeModulePkgTokenSpaceGuid.PcdNullPointerDetectionPropertyMask
> 
> The default setting is 'disable'.
> 
> BZ Tracker:
> https://bugzilla.tianocore.org/show_bug.cgi?id=1095
> 
> Jian J Wang (4):
>   MdeModulePkg/MdeModulePkg.dec: add new settings for PCDs
>   UefiCpuPkg/CpuExceptionHandlerLib: Setup single step in #PF handler
>   UefiCpuPkg/CpuDxe: implement non-stop mode for uefi
>   UefiCpuPkg/PiSmmCpuDxeSmm: implement non-stop mode for SMM
> 
>  MdeModulePkg/MdeModulePkg.dec                      |   4 +-
>  UefiCpuPkg/CpuDxe/CpuDxe.h                         |  39 +++
>  UefiCpuPkg/CpuDxe/CpuDxe.inf                       |   3 +
>  UefiCpuPkg/CpuDxe/CpuMp.c                          |  34 ++-
>  UefiCpuPkg/CpuDxe/CpuPageTable.c                   | 271 +++++++++++++++++++++
>  .../Ia32/ExceptionHandlerAsm.nasm                  |   7 +
>  .../Ia32/ExceptionTssEntryAsm.nasm                 |   4 +-
>  .../X64/ExceptionHandlerAsm.nasm                   |   4 +
>  UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/PageTbl.c           |  43 ++--
>  UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/SmiException.nasm   |   3 +-
>  UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.c             |  60 ++++-
>  UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.h             |  15 ++
>  UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfileInternal.h     |   6 +
>  UefiCpuPkg/PiSmmCpuDxeSmm/X64/PageTbl.c            |  43 ++--
>  14 files changed, 495 insertions(+), 41 deletions(-)
> 
> --
> 2.16.2.windows.1
> 
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