Ray, I think the use of Include/Register is good for this type of content. But we may need a Vendor directory.
The general form would be: Include/Register/<Vendor>/<RegisterFile>.h Since the definitions being discussed here are from an Intel public document, perhaps the path should be: Include/Register/Intel/Cpuid.h Thanks, Mike > -----Original Message----- > From: Ni, Ray > Sent: Wednesday, July 24, 2019 5:46 PM > To: Kinney, Michael D <michael.d.kin...@intel.com>; > devel@edk2.groups.io > Subject: RE: [edk2-devel] [PATCH V2 0/6] Support 5- > level paging in DXE long mode > > Mike, > Are you suggesting that > 1. Copy Cpuid.h in MdePkg/Include/IndustryStandard/ 2. > Change UefiCpuPkg/Include/Register/Cpuid.h to just > include <IndustryStandard/Cpuid.h> > > It looks like a potential issue that there are two > "Cpuid.h" public header file in different folders. > But given the include pattern used: > "<Register/Cpuid.h>" VS "<IndustryStandard/Cpuid.h>", > the risk people may include wrong file or compilers > don't know which file to use is zero. > > Is that what you think? > > Thanks, > Ray > > > -----Original Message----- > > From: Kinney, Michael D > > Sent: Thursday, July 25, 2019 1:23 AM > > To: devel@edk2.groups.io; Ni, Ray <ray...@intel.com>; > Kinney, Michael > > D <michael.d.kin...@intel.com> > > Subject: RE: [edk2-devel] [PATCH V2 0/6] Support 5- > level paging in DXE > > long mode > > > > Hi Ray, > > > > Given that there may be register definitions for > other CPUs or devices > > added to MdePkg in the future, should an extra > directory level be > > added? Doing that would break source compatibility > for existing > > components that use #include <Register/Cpuid.h> from > UefiCpuPkg. We > > could keep Cpuid.h in UefiCpuPkg, and it could be a > #include of the > > new Cpuid.h file in the MdePkg in the extended path. > > > > Also, should CpuId.h be included from BaseLib.h > inside: > > > > #if defined (MDE_CPU_IA32) || defined (MDE_CPU_X64) > > > > This would make all CPUID related register > definitions available to > > components the needs BaseLib to call > > AsmCpuId() or AsmCpuIdEx()? > > > > We could also move the CRx, FLAGS/EFLAGS/descriptor > structures out of > > BaseLib.h into include files that are peers to > Cpuid.h and could be > > updated based on public spec updates. > > > > Thanks, > > > > Mike > > > > > -----Original Message----- > > > From: devel@edk2.groups.io > > > [mailto:devel@edk2.groups.io] On Behalf Of Ni, Ray > > > Sent: Wednesday, July 24, 2019 3:00 AM > > > To: devel@edk2.groups.io > > > Subject: [edk2-devel] [PATCH V2 0/6] Support 5- > level paging in DXE > > > long mode > > > > > > v2: > > > Refined the patch according to reviewers' all > comments except: > > > 0A0h cannot be changed to A0h or build fails. > > > A big change in this patch is Cpuid.h is moved > from UefiCpuPkg to > > > MdePkg. > > > The move is based on real requirement when > certain modules that > > > cannot > > > depend on UefiCpuPkg but needs to reference > structures defined in > > > SDM. > > > > > > Ray Ni (6): > > > UefiCpuPkg/MpInitLib: Enable 5-level paging for > AP when BSP's > > > enabled > > > UefiCpuPkg/CpuDxe: Remove unnecessary macros > > > UefiCpuPkg/CpuDxe: Support parsing 5-level page > table > > > MdeModulePkg/DxeIpl: Introduce PCD > PcdUse5LevelPageTable > > > MdePkg/Cpuid.h: Move Cpuid.h from UefiCpuPkg to > MdePkg > > > MdeModulePkg/DxeIpl: Create 5-level page table > for long mode > > > > > > MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf | > 1 + > > > .../Core/DxeIplPeim/X64/VirtualMemory.c | > 229 > > > ++++++++++++------ > > > MdeModulePkg/MdeModulePkg.dec | > 7 + > > > MdeModulePkg/MdeModulePkg.uni | > 8 + > > > .../Include/Register/Cpuid.h | > 0 > > > UefiCpuPkg/CpuDxe/CpuPageTable.c | > 59 > > > +++-- > > > UefiCpuPkg/CpuDxe/CpuPageTable.h | > 3 +- > > > UefiCpuPkg/Library/MpInitLib/MpLib.c | > 13 + > > > UefiCpuPkg/Library/MpInitLib/MpLib.h | > 6 +- > > > UefiCpuPkg/Library/MpInitLib/X64/MpEqu.inc | > 3 +- > > > UefiCpuPkg/Library/MpInitLib/X64/MpFuncs.nasm | > 14 +- > > > 11 files changed, 243 insertions(+), 100 > deletions(-) rename > > > {UefiCpuPkg => MdePkg}/Include/Register/Cpuid.h > > > (100%) > > > > > > -- > > > 2.21.0.windows.1 > > > > > > > > > -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#44348): https://edk2.groups.io/g/devel/message/44348 Mute This Topic: https://groups.io/mt/32582433/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-