[edk2-devel] [PATCH 2/2] UefiCpuPkg/PiSmmCpuDxeSmm: Remove useless code in ResetTokens.
Ni, Ray
ray.ni at intel.com
Fri Apr 10 07:08:32 UTC 2020
Reviewed-by: Ray Ni <ray.ni at intel.com>
> -----Original Message-----
> From: devel at edk2.groups.io <devel at edk2.groups.io> On Behalf Of Dong, Eric
> Sent: Friday, April 10, 2020 2:54 PM
> To: devel at edk2.groups.io
> Cc: Ni, Ray <ray.ni at intel.com>; Zeng, Star <star.zeng at intel.com>; Laszlo Ersek <lersek at redhat.com>
> Subject: [edk2-devel] [PATCH 2/2] UefiCpuPkg/PiSmmCpuDxeSmm: Remove useless code in ResetTokens.
>
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2388
>
>
> After remove Used parameter, below code in ResetTokens can also be
> removed:
> 1. The RunningApCount parameter will be reset in GetFreeToken.
> 2. The ReleaseSpinLock should be called in ReleaseToken function,
> Code in this function seems like a later fix if ReleaseToken not
> Release it. We should remove code here and fix the real issue if
> existed.
>
> Signed-off-by: Eric Dong <eric.dong at intel.com>
> Cc: Ray Ni <ray.ni at intel.com>
> Cc: Star Zeng <star.zeng at intel.com>
> Cc: Laszlo Ersek <lersek at redhat.com>
> ---
> UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c | 20 --------------------
> 1 file changed, 20 deletions(-)
>
> diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
> index 305bffa9bc..57e788c01b 100644
> --- a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
> +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
> @@ -433,26 +433,6 @@ ResetTokens (
> VOID
>
> )
>
> {
>
> - LIST_ENTRY *Link;
>
> - PROCEDURE_TOKEN *ProcToken;
>
> -
>
> - Link = GetFirstNode (&gSmmCpuPrivate->TokenList);
>
> - while (!IsNull (&gSmmCpuPrivate->TokenList, Link)) {
>
> - ProcToken = PROCEDURE_TOKEN_FROM_LINK (Link);
>
> -
>
> - ProcToken->RunningApCount = 0;
>
> -
>
> - //
>
> - // Check the spinlock status and release it if not released yet.
>
> - //
>
> - if (!AcquireSpinLockOrFail(ProcToken->SpinLock)) {
>
> - DEBUG((DEBUG_ERROR, "Risk::SpinLock still not released!"));
>
> - }
>
> - ReleaseSpinLock (ProcToken->SpinLock);
>
> -
>
> - Link = GetNextNode (&gSmmCpuPrivate->TokenList, Link);
>
> - }
>
> -
>
> //
>
> // Reset the FirstFreeToken to the beginning of token list upon exiting SMI.
>
> //
>
> --
> 2.23.0.windows.1
>
>
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