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UefiCpuPkg/MpInitLib: Not use disabled AP when call StartAllAPs.

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Base on UEFI spec requirement, StartAllAPs function should not use the APs which has been disabled before. This patch just change current code to follow this rule.

V3 changes:
Only called by StartUpAllAps, WakeUpAp will not wake up the disabled APs, in other cases also need to include the disabled APs, such as CpuDxe driver start up and ChangeApLoopCallback function.

WakeUpAP() is called with (Broadcast && WakeUpDisabledAps) from MpInitLibInitialize(), CollectProcessorCount() and MpInitChangeApLoopCallback() only. The first two run before the PPI or Protocol user has a chance to disable any APs. The last one runs in response to the ExitBootServices and LegacyBoot events, after which the MP protocol is unusable. For this reason, it doesn't matter that an originally disabled AP's state is not restored to Disabled, when
WakeUpAP() is called with (Broadcast && WakeUpDisabledAps).

Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
This commit is contained in:
Eric Dong
2018-07-26 16:44:22 +08:00
parent 2da3e96cb7
commit cf4e79e466
3 changed files with 26 additions and 12 deletions
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4
UefiCpuPkg/Library/MpInitLib/MpLib.h
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@@ -377,6 +377,7 @@ GetModeTransitionBuffer (
@param[in] ProcessorNumber The handle number of specified processor
@param[in] Procedure The function to be invoked by AP
@param[in] ProcedureArgument The argument to be passed into AP function
@param[in] WakeUpDisabledAps Whether need to wake up disabled APs in broadcast mode.
**/
VOID
WakeUpAP (
@@ -384,7 +385,8 @@ WakeUpAP (
IN BOOLEAN Broadcast,
IN UINTN ProcessorNumber,
IN EFI_AP_PROCEDURE Procedure, OPTIONAL
IN VOID *ProcedureArgument OPTIONAL
IN VOID *ProcedureArgument, OPTIONAL
IN BOOLEAN WakeUpDisabledAps OPTIONAL
);
/**