[edk2-devel] [PATCH v1 1/1] UefiCpuPkg: Reset a parameter when BSP Exit in CPU relaxed mode.

[Wu, Jiaxin]

Reviewed-by: Jiaxin Wu <jiaxin.wu at intel.com>


> -----Original Message-----
> From: devel at edk2.groups.io <devel at edk2.groups.io> On Behalf Of Ni, Ray
> Sent: Saturday, October 8, 2022 2:34 PM
> To: Li, Zhihao <zhihao.li at intel.com>; devel at edk2.groups.io
> Cc: Dong, Eric <eric.dong at intel.com>
> Subject: Re: [edk2-devel] [PATCH v1 1/1] UefiCpuPkg: Reset a parameter
> when BSP Exit in CPU relaxed mode.
> 
> Reviewed-by: Ray Ni <ray.ni at intel.com>
> 
> > -----Original Message-----
> > From: Li, Zhihao <zhihao.li at intel.com>
> > Sent: Tuesday, September 27, 2022 8:58 PM
> > To: devel at edk2.groups.io
> > Cc: Dong, Eric <eric.dong at intel.com>; Ni, Ray <ray.ni at intel.com>
> > Subject: [PATCH v1 1/1] UefiCpuPkg: Reset a parameter when BSP Exit in
> > CPU relaxed mode.
> >
> > From: Zhihao Li <zhihao.li at intel.com>
> >
> > REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4083
> >
> > In CPU relaxed mode, it doesn't reset the value of
> > mSmmMpSyncData->AllApArrivedWithException when BSP exit smm
> mode.
> > So this patch will reset this variable.
> >
> > Cc: Eric Dong <eric.dong at intel.com>
> > Cc: Ray Ni <ray.ni at intel.com>
> >
> > Signed-off-by: Zhihao Li <zhihao.li at intel.com>
> > ---
> >  UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c | 5 +++--
> >  1 file changed, 3 insertions(+), 2 deletions(-)
> >
> > diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
> > b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
> > index 13c2cb8da4c3..c79da418e37c 100644
> > --- a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
> > +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
> > @@ -696,8 +696,9 @@ BSPHandler (
> >    //
> >
> >    // Allow APs to check in from this point on
> >
> >    //
> >
> > -  *mSmmMpSyncData->Counter       = 0;
> >
> > -  *mSmmMpSyncData->AllCpusInSync = FALSE;
> >
> > +  *mSmmMpSyncData->Counter                  = 0;
> >
> > +  *mSmmMpSyncData->AllCpusInSync            = FALSE;
> >
> > +  mSmmMpSyncData->AllApArrivedWithException = FALSE;
> >
> >  }
> >
> >
> >
> >  /**
> >
> > --
> > 2.26.2.windows.1
> 
> 
> 
> 
> 



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