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PeiStartupAllAPs()/PeiStartupThisAP() will send INIT-SIPI-SIPI to wakeup APs to execute AP function. However, some registers will be reset after APs received INIT IPI. We need to restore some registers (For example, CRx/DRx) manually after APs wakeup. Cc: Feng Tian <feng.tian@intel.com> Cc: Michael Kinney <michael.d.kinney@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jeff Fan <jeff.fan@intel.com> Reviewed-by: Feng Tian <feng.tian@Intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19089 6f19259b-4bc3-4df7-8a09-765794883524