Re: [edk2-devel] [Patch V2 1/3] UefiCpuPkg/MpInitLib:Repeat WakeUpAp of loading microcode,Syncing MTRR.

["Laszlo Ersek" <lersek@redhat.com>]

On 11/21/23 08:39, Yuanhao Xie wrote:
> This patch replicates the WakeUpAp operation, encompassing both
> microcode loading and MTRR synchronization, regardless of whether
> MpHandOff is NULL.
> 
> The purpose of this patch is to enhance the review process.
> The separation in this patch is aimed at facilitating a more
> straightforward review, with the ultimate goal of eliminating the
> microcode loading functionality for the second time Mp initialization.
> 
> Cc: Ray Ni <ray.ni@intel.com>
> Cc: Eric Dong <eric.dong@intel.com>
> Cc: Rahul Kumar <rahul1.kumar@intel.com>
> Cc: Tom Lendacky <thomas.lendacky@amd.com>
> Cc: Laszlo Ersek <lersek@redhat.com>
> Signed-off-by: Yuanhao Xie <yuanhao.xie@intel.com>
> ---
>  UefiCpuPkg/Library/MpInitLib/MpLib.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.c b/UefiCpuPkg/Library/MpInitLib/MpLib.c
> index 9a6ec5db5c..e8ffb99874 100644
> --- a/UefiCpuPkg/Library/MpInitLib/MpLib.c
> +++ b/UefiCpuPkg/Library/MpInitLib/MpLib.c
> @@ -2256,9 +2256,11 @@ MpInitLibInitialize (
>        // in DXE.
>        //
>        CpuMpData->InitFlag = ApInitReconfig;
> +      WakeUpAP (CpuMpData, TRUE, 0, ApInitializeSync, CpuMpData, TRUE);
> +    } else {
> +      WakeUpAP (CpuMpData, TRUE, 0, ApInitializeSync, CpuMpData, TRUE);
>      }
>  
> -    WakeUpAP (CpuMpData, TRUE, 0, ApInitializeSync, CpuMpData, TRUE);
>      //
>      // Wait for all APs finished initialization
>      //

Reviewed-by: Laszlo Ersek <lersek@redhat.com>



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