Hi Isaac,

Please see feedback inline.

Thanks,
Nate

> -----Original Message-----
> From: Oram, Isaac W <isaac.w.o...@intel.com>
> Sent: Friday, May 27, 2022 2:47 PM
> To: devel@edk2.groups.io
> Cc: Desimone, Nathaniel L <nathaniel.l.desim...@intel.com>; Chiu, Chasel
> <chasel.c...@intel.com>
> Subject: [edk2-devel][edk2-platforms][PATCH V1 1/1]
> WhitleySiliconPkg/PchPolicyPpi: Fix binary structure layout
> 
> Disambiguate the PCH_DMI_CONFIG and PCH_TRACE_HUB_CONFIG
> structure definitions such that compilers generate same binary layouts.
> 
> Cc: Nate DeSimone <nathaniel.l.desim...@intel.com>
> Cc: Chasel Chiu <chasel.c...@intel.com>
> Signed-off-by: Isaac Oram <isaac.w.o...@intel.com>
> ---
>  .../Pch/SouthClusterLbg/Include/PchPolicyCommon.h              | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git
> a/Silicon/Intel/WhitleySiliconPkg/Pch/SouthClusterLbg/Include/PchPolicyCo
> mmon.h
> b/Silicon/Intel/WhitleySiliconPkg/Pch/SouthClusterLbg/Include/PchPolicyCo
> mmon.h
> index 0e10d0b8f0..c95481bf1d 100644
> ---
> a/Silicon/Intel/WhitleySiliconPkg/Pch/SouthClusterLbg/Include/PchPolicyCo
> mmon.h
> +++ b/Silicon/Intel/WhitleySiliconPkg/Pch/SouthClusterLbg/Include/PchPol
> +++ icyCommon.h
> @@ -1351,7 +1351,9 @@ typedef struct {
>    **/
>    UINT32     DmiAspm           :  1;
>    UINT32     PwrOptEnable      :  1;    ///< <b>0: Disable</b>; 1: Enable DMI
> Power Optimizer on PCH side.
> +  UINT32     Rsvdbits1         : 30;
>    BOOLEAN    DmiStopAndScreamEnable : 1;
> +  BOOLEAN    Rsvdbits2              : 7;

Please convert this from BOOLEAN to UINT8. Since there is an strong requirement 
that the bitfield be exactly 8 bits long it is best to use a data type that is 
explicitly 8 bit.

>    UINT32     DmiLinkDownHangBypass  : 1;
>    UINT32     Rsvdbits               : 29;
>    UINT32     Rsvd0[6];                  ///< Reserved bytes
> @@ -1447,6 +1449,7 @@ typedef struct {
>    TRACE_HUB_CONFIG            TraceHub;
>    UINT32                      AetEnableMode      :  2;
>    UINT32                      PchTraceHubHide    :  1;
> +  UINT32                      Rsvdbits           : 29;
>  } PCH_TRACE_HUB_CONFIG;
> 
> 
> --
> 2.36.1.windows.1



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