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From: "Abner Chang" <abner.chang@hpe.com>
To: Leif Lindholm <leif.lindholm@linaro.org>
Cc: "devel@edk2.groups.io" <devel@edk2.groups.io>,
	"Philippe Mathieu-Daudé" <philmd@redhat.com>,
	"Michael D Kinney" <michael.d.kinney@intel.com>,
	"Liming Gao" <liming.gao@intel.com>
Subject: Re: [edk2-devel] [edk2-staging/RISC-V-V2 PATCH v2 09/29] MdePkg/BaseIoLibIntrinsic: RISC-V I/O intrinsic functions.
Date: Wed, 2 Oct 2019 16:14:08 +0000	[thread overview]
Message-ID: <CS1PR8401MB1192FDE1F8263A4431FA67CFFF9C0@CS1PR8401MB1192.NAMPRD84.PROD.OUTLOOK.COM> (raw)
In-Reply-To: <20191002091317.GZ25504@bivouac.eciton.net>

Thanks Leif, let me check with maintainers.

Hi Mike and Liming,
How do you think about to use IoLibArm as the I/O lib instance for RISC-V arch? I personally don't like to use IoLibArm.c in [Source.RISCV64] section, instead I would like to use IoLibRiscV.c which conform with current source file organization under BaseIoLibIntrinsics. What's your preference?

Thanks
Abner

> -----Original Message-----
> From: Leif Lindholm [mailto:leif.lindholm@linaro.org]
> Sent: Wednesday, October 2, 2019 5:13 PM
> To: Chang, Abner (HPS SW/FW Technologist) <abner.chang@hpe.com>
> Cc: devel@edk2.groups.io; Philippe Mathieu-Daudé <philmd@redhat.com>
> Subject: Re: [edk2-devel] [edk2-staging/RISC-V-V2 PATCH v2 09/29]
> MdePkg/BaseIoLibIntrinsic: RISC-V I/O intrinsic functions.
> 
> On Wed, Oct 02, 2019 at 01:30:12AM +0000, Chang, Abner (HPS SW/FW
> Technologist) wrote:
> > > There should be exactly one variant of IoLib.c. Well, these days we
> > > need a separate one for ARM/AARCH64 under hw virtualization.
> > >
> > > IoLibArm, IoLibEbc and IoLibRiscV have *exactly* the same requirements.
> > > And now x86 uses NASM regardless of build platform, I think it would
> > > make sense to move the contents of IoLibGcc and IoLibMsc into
> assembler.
> >
> > That looks weird and doesn't make sense to use Arm code for RISC-V
> > even the functionality is exactly the same to IoLibRiscV. I will still
> > keep it as IoLibRiscV.c until there is a generic IoLib for different
> > arch.
> 
> This is C code. It is no more weird to use "another architecture's"
> code than it is to add another file doing exactly the same thing but
> pretending it is "for" another architecture.
> 
> And one of those options does not pile up even more code duplication in the
> tree.
> 
> But you are welcome to convince some other maintainer of the opposite.
> 
> /
>     Leif

  reply	other threads:[~2019-10-02 16:14 UTC|newest]

Thread overview: 108+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-23  0:31 [edk2-staging/RISC-V-V2 PATCH v2 00/29] RISC-V EDK2 Port on Abner Chang
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 01/29] RiscVPkg: RISC-V processor package Abner Chang
2019-09-26 22:26   ` [edk2-devel] " Leif Lindholm
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 02/29] RiscVPkg/Include: Add header files of RISC-V CPU package Abner Chang
2019-09-26 22:29   ` [edk2-devel] " Leif Lindholm
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 03/29] RiscVPkg/opensbi: EDK2 RISC-V OpenSBI support Abner Chang
2019-09-26 22:41   ` [edk2-devel] " Leif Lindholm
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 04/29] MdePkg: RISC-V RV64 binding in MdePkg Abner Chang
2019-09-26 22:44   ` [edk2-devel] " Leif Lindholm
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 05/29] MdePkg/Include: RISC-V definitions Abner Chang
2019-09-26 22:45   ` [edk2-devel] " Leif Lindholm
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 06/29] MdeModulePkg/CapsuleRuntimeDxe: Add RISCV64 arch Abner Chang
2019-09-26 22:46   ` [edk2-devel] " Leif Lindholm
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 07/29] MdePkg/BaseLib: BaseLib for RISC-V RV64 Processor Abner Chang
2019-09-26 22:56   ` [edk2-devel] " Leif Lindholm
2019-10-14 16:47     ` Abner Chang
2019-10-14 18:23       ` Leif Lindholm
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 08/29] MdePkg/BaseCacheMaintenanceLib: RISC-V cache maintenance implementation Abner Chang
2019-10-01  8:44   ` [edk2-devel] " Philippe Mathieu-Daudé
2019-09-23  0:31 ` Abner Chang
2019-09-26 23:30   ` [edk2-devel] " Leif Lindholm
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 09/29] MdePkg/BaseIoLibIntrinsic: RISC-V I/O intrinsic functions Abner Chang
2019-09-26 23:39   ` [edk2-devel] " Leif Lindholm
2019-10-01  8:49     ` Philippe Mathieu-Daudé
2019-10-01  9:07       ` Leif Lindholm
2019-10-02  1:30         ` Abner Chang
2019-10-02  9:13           ` Leif Lindholm
2019-10-02 16:14             ` Abner Chang [this message]
2019-10-02 16:27               ` Andrew Fish
2019-10-02 16:35                 ` Leif Lindholm
2019-10-03  0:52                   ` Abner Chang
2019-10-03  8:38                     ` Leif Lindholm
2019-10-03 11:34                       ` Abner Chang
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 10/29] MdePkg/BasePeCoff: Add RISC-V PE/Coff related code Abner Chang
2019-09-26 23:46   ` [edk2-devel] " Leif Lindholm
2019-10-15  4:02     ` Abner Chang
2019-10-15 10:31       ` Leif Lindholm
2019-10-15 10:56         ` Abner Chang
     [not found]     ` <15CDB6324F411B37.30896@groups.io>
2019-10-15  4:26       ` Abner Chang
2019-10-15 10:41         ` Leif Lindholm
2019-10-15 10:59           ` Abner Chang
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 11/29] MdePkg/BaseCpuLib: RISC-V Base CPU library implementation Abner Chang
2019-09-26 23:47   ` [edk2-devel] " Leif Lindholm
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 12/29] MdePkg/BaseSynchronizationLib: RISC-V cache related code Abner Chang
2019-09-27  0:19   ` [edk2-devel] " Leif Lindholm
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 13/29] MdeModulePkg/Logo Abner Chang
2019-09-30 22:51   ` [edk2-devel] " Leif Lindholm
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 14/29] NetworkPkg Abner Chang
2019-09-30 22:51   ` [edk2-devel] " Leif Lindholm
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 15/29] RiscVPkg/Library: RISC-V CPU library Abner Chang
2019-09-30 18:31   ` [edk2-devel] " Leif Lindholm
2019-10-15  2:32     ` Abner Chang
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 16/29] RiscVPkg/Library: Add RISC-V exception library Abner Chang
2019-09-30 19:15   ` [edk2-devel] " Leif Lindholm
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 17/29] RiscVPkg/Library: Add RISC-V timer library Abner Chang
2019-09-30 19:46   ` [edk2-devel] " Leif Lindholm
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 18/29] RiscVPkg/Library: Add EDK2 RISC-V OpenSBI library Abner Chang
2019-09-30 20:03   ` [edk2-devel] " Leif Lindholm
2019-10-15  1:21     ` Abner Chang
2019-10-15  8:35       ` Leif Lindholm
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 19/29] RiscVPkg/Library: RISC-V platform level DxeIPL libraries Abner Chang
2019-09-30 20:15   ` [edk2-devel] " Leif Lindholm
2019-09-30 20:44     ` Leif Lindholm
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 20/29] MdeModulePkg/DxeIplPeim : RISC-V platform level DxeIPL Abner Chang
2019-09-30 20:31   ` [edk2-devel] " Leif Lindholm
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 21/29] RiscVPkg/PeiServicesTablePointerLibOpenSbi: RISC-V PEI Service Table Pointer library Abner Chang
2019-09-30 20:54   ` [edk2-devel] " Leif Lindholm
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 22/29] RiscVPkg/RiscVPlatformTempMemoryInit: RISC-V Platform Temporary Memory library Abner Chang
2019-09-30 20:56   ` [edk2-devel] " Leif Lindholm
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 23/29] RiscVPkg/CpuDxe: Add RISC-V CPU DXE driver Abner Chang
2019-09-30 21:11   ` [edk2-devel] " Leif Lindholm
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 24/29] BaseTools: BaseTools changes for RISC-V platform Abner Chang
2019-09-26 22:09   ` [edk2-devel] " Leif Lindholm
2019-10-15  6:18     ` Abner Chang
2019-10-15 10:56       ` Leif Lindholm
2019-10-15 11:13         ` Abner Chang
2019-10-16  5:06         ` Abner Chang
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 25/29] BaseTools/Scripts Abner Chang
2019-09-26 20:50   ` [edk2-devel] " Leif Lindholm
2019-10-15  6:31     ` Abner Chang
2019-10-15 11:00       ` Leif Lindholm
2019-10-15 11:03         ` Abner Chang
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 26/29] RiscVPkg/SmbiosDxe: Generic SMBIOS DXE driver for RISC-V platforms Abner Chang
2019-09-30 22:39   ` [edk2-devel] " Leif Lindholm
2019-10-14 11:27     ` Abner Chang
2019-10-14 11:56       ` Leif Lindholm
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 27/29] edk2-staging/RISC-V-V2: Add submodule Abner Chang
2019-09-26 22:24   ` [edk2-devel] " Leif Lindholm
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 28/29] edk2-staging/RISC-V-V2: Add ReadMe Abner Chang
2019-09-30 22:48   ` [edk2-devel] " Leif Lindholm
2019-09-23  0:31 ` [edk2-staging/RISC-V-V2 PATCH v2 29/29] edk2-staging: Update Maintainers.txt Abner Chang
2019-09-30 22:50   ` [edk2-devel] " Leif Lindholm
     [not found] ` <15C6EB9824DD2A88.29693@groups.io>
2019-09-24  1:52   ` [edk2-devel] [edk2-staging/RISC-V-V2 PATCH v2 04/29] MdePkg: RISC-V RV64 binding in MdePkg Abner Chang
     [not found] ` <15C6EB994C26E5C4.2053@groups.io>
2019-09-24  1:52   ` [edk2-devel] [edk2-staging/RISC-V-V2 PATCH v2 05/29] MdePkg/Include: RISC-V definitions Abner Chang
     [not found] ` <15C6EB9950232DB5.29693@groups.io>
2019-09-24  1:53   ` [edk2-devel] [edk2-staging/RISC-V-V2 PATCH v2 07/29] MdePkg/BaseLib: BaseLib for RISC-V RV64 Processor Abner Chang
     [not found] ` <15C6EB9A049FF8A4.24160@groups.io>
2019-09-24  1:54   ` [edk2-devel] [edk2-staging/RISC-V-V2 PATCH v2 09/29] MdePkg/BaseIoLibIntrinsic: RISC-V I/O intrinsic functions Abner Chang
     [not found] ` <15C6EB9B3E887BEB.29693@groups.io>
2019-09-24  1:55   ` [edk2-devel] [edk2-staging/RISC-V-V2 PATCH v2 13/29] MdeModulePkg/Logo Abner Chang
     [not found] ` <15C6EB9A40C408A0.24160@groups.io>
2019-09-24  1:56   ` [edk2-devel] [edk2-staging/RISC-V-V2 PATCH v2 10/29] MdePkg/BasePeCoff: Add RISC-V PE/Coff related code Abner Chang
     [not found] ` <15C6EB9B872A5B83.24160@groups.io>
2019-09-24  1:57   ` [edk2-devel] [edk2-staging/RISC-V-V2 PATCH v2 14/29] NetworkPkg Abner Chang
     [not found] ` <15C6EB99CBC780B5.2053@groups.io>
2019-09-24  1:57   ` [edk2-devel] [edk2-staging/RISC-V-V2 PATCH v2 08/29] MdePkg/BaseCacheMaintenanceLib: RISC-V cache maintenance implementation Abner Chang
     [not found] ` <15C6EB9A9BD83853.2053@groups.io>
2019-09-24  1:58   ` [edk2-devel] [edk2-staging/RISC-V-V2 PATCH v2 11/29] MdePkg/BaseCpuLib: RISC-V Base CPU library implementation Abner Chang
     [not found] ` <15C6EB9AEB7BB057.24160@groups.io>
2019-09-24  1:58   ` [edk2-devel] [edk2-staging/RISC-V-V2 PATCH v2 12/29] MdePkg/BaseSynchronizationLib: RISC-V cache related code Abner Chang
     [not found] ` <15C6EB99608359A3.24160@groups.io>
2019-09-24  1:59   ` [edk2-devel] [edk2-staging/RISC-V-V2 PATCH v2 08/29] MdePkg/BaseCacheMaintenanceLib: RISC-V cache maintenance implementation Abner Chang
     [not found] ` <15C6EB9D6C0EC3B0.29693@groups.io>
2019-09-24  2:00   ` [edk2-devel] [edk2-staging/RISC-V-V2 PATCH v2 20/29] MdeModulePkg/DxeIplPeim : RISC-V platform level DxeIPL Abner Chang
     [not found] ` <15C6EB98AD6CCCEB.24160@groups.io>
2019-09-24  2:01   ` [edk2-devel] [edk2-staging/RISC-V-V2 PATCH v2 06/29] MdeModulePkg/CapsuleRuntimeDxe: Add RISCV64 arch Abner Chang
     [not found] ` <15C6EB9F04387439.29693@groups.io>
2019-09-24  2:02   ` [edk2-devel] [edk2-staging/RISC-V-V2 PATCH v2 25/29] BaseTools/Scripts Abner Chang
2019-09-26 22:22 ` [edk2-devel] [edk2-staging/RISC-V-V2 PATCH v2 00/29] RISC-V EDK2 Port on Leif Lindholm
2019-10-15  6:39   ` Abner Chang

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