Star Zeng 8c09f30010 IntelSiliconPkg VTdDxe: Option to force no early access attr request ... REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1272 To have high confidence in usage for platform, add option (BIT2 of PcdVTdPolicyPropertyMask) to force no IOMMU access attribute request recording before DMAR table is installed. Check PcdVTdPolicyPropertyMask BIT2 before RequestAccessAttribute() and ProcessRequestedAccessAttribute(), then RequestAccessAttribute(), ProcessRequestedAccessAttribute() and mAccessRequestXXX variables could be optimized by compiler when PcdVTdPolicyPropertyMask BIT2 = 1. Test done: 1: Created case that has IOMMU access attribute request before DMAR table is installed, ASSERT was triggered after setting PcdVTdPolicyPropertyMask BIT2 to 1. 2. Confirmed RequestAccessAttribute(), ProcessRequestedAccessAttribute() and mAccessRequestXXX variables were optimized by compiler after setting PcdVTdPolicyPropertyMask BIT2 to 1. Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Rangasai V Chaganty <rangasai.v.chaganty@intel.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Star Zeng <star.zeng@intel.com> Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>		2018-10-25 11:50:43 +08:00
..
IntelVTdDxe	IntelSiliconPkg VTdDxe: Option to force no early access attr request	2018-10-25 11:50:43 +08:00
IntelVTdPmrPei	IntelSiliconPkg/Vtd: Add DMA_CTRL_PLATFORM_OPT_IN_FLAG dump	2018-03-12 13:17:14 +08:00
PlatformVTdInfoSamplePei	IntelSiliconPkg: Removing ipf which is no longer supported from edk2.	2018-09-13 13:12:02 +08:00
PlatformVTdSampleDxe	IntelSiliconPkg: Removing ipf which is no longer supported from edk2.	2018-09-13 13:12:02 +08:00