[edk2-devel] [PATCH] MdePkg/BaseCpuLib: Remove assembly for CpuFlushTlb
Michael D Kinney
michael.d.kinney at intel.com
Fri Dec 9 02:40:18 UTC 2022
Did you use git mv to rename CpuFlushTlbGcc,c to CpuFlushTlb.c
to preserve history?
The log here shows a delete and new.
Mike
> -----Original Message-----
> From: Liu, Zhiguang <zhiguang.liu at intel.com>
> Sent: Thursday, December 8, 2022 5:42 PM
> To: devel at edk2.groups.io; Liu, Zhiguang <zhiguang.liu at intel.com>
> Cc: Kinney, Michael D <michael.d.kinney at intel.com>; Gao, Liming <gaoliming at byosoft.com.cn>; Ni, Ray <ray.ni at intel.com>
> Subject: RE: [edk2-devel] [PATCH] MdePkg/BaseCpuLib: Remove assembly for CpuFlushTlb
>
> Hi Liming and Mike,
> Could you help review this patch?
>
> Thanks
> Zhiguang
>
> > -----Original Message-----
> > From: devel at edk2.groups.io <devel at edk2.groups.io> On Behalf Of
> > Zhiguang Liu
> > Sent: Friday, December 2, 2022 2:25 PM
> > To: devel at edk2.groups.io
> > Cc: Liu, Zhiguang <zhiguang.liu at intel.com>; Kinney, Michael D
> > <michael.d.kinney at intel.com>; Gao, Liming <gaoliming at byosoft.com.cn>;
> > Ni, Ray <ray.ni at intel.com>
> > Subject: [edk2-devel] [PATCH] MdePkg/BaseCpuLib: Remove assembly for
> > CpuFlushTlb
> >
> > For different compilers, both IA32 and X64 can use Ia32/CpuFlushTlbGcc.c,
> > which is C code (no inline assembly code).
> > To simplify, remove other assemly file for CpuFlushTlb, and rename
> > Ia32/CpuFlushTlbGcc.c to Ia32/CpuFlushTlb.c.
> >
> > Cc: Michael D Kinney <michael.d.kinney at intel.com>
> > Cc: Liming Gao <gaoliming at byosoft.com.cn>
> > Signed-off-by: Ray Ni <ray.ni at intel.com>
> > Signed-off-by: Zhiguang Liu <zhiguang.liu at intel.com>
> > ---
> > MdePkg/Library/BaseCpuLib/BaseCpuLib.inf | 10 ++----
> > MdePkg/Library/BaseCpuLib/Ia32/CpuFlushTlb.c | 12 +++----
> > .../Library/BaseCpuLib/Ia32/CpuFlushTlb.nasm | 31 ------------------
> > .../Library/BaseCpuLib/Ia32/CpuFlushTlbGcc.c | 25 ---------------
> > .../Library/BaseCpuLib/X64/CpuFlushTlb.nasm | 32 -------------------
> > 5 files changed, 9 insertions(+), 101 deletions(-) delete mode 100644
> > MdePkg/Library/BaseCpuLib/Ia32/CpuFlushTlb.nasm
> > delete mode 100644 MdePkg/Library/BaseCpuLib/Ia32/CpuFlushTlbGcc.c
> > delete mode 100644 MdePkg/Library/BaseCpuLib/X64/CpuFlushTlb.nasm
> >
> > diff --git a/MdePkg/Library/BaseCpuLib/BaseCpuLib.inf
> > b/MdePkg/Library/BaseCpuLib/BaseCpuLib.inf
> > index 6b230f6e6d..0feb592638 100644
> > --- a/MdePkg/Library/BaseCpuLib/BaseCpuLib.inf
> > +++ b/MdePkg/Library/BaseCpuLib/BaseCpuLib.inf
> > @@ -4,7 +4,7 @@
> > # CPU Library implemented using ASM functions for IA32, X64, ARM,
> > AARCH64, # PAL CALLs for IPF, and empty functions for EBC.
> > #
> > -# Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
> > +# Copyright (c) 2007 - 2022, Intel Corporation. All rights
> > +reserved.<BR>
> > # Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> #
> > Portions copyright (c) 2011 - 2013, ARM Ltd. All rights reserved.<BR> #
> > Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights
> > reserved.<BR> @@ -31,16 +31,12 @@
> >
> > [Sources.IA32]
> > Ia32/CpuSleep.c | MSFT
> > - Ia32/CpuFlushTlb.c | MSFT
> > -
> > Ia32/CpuSleep.nasm| INTEL
> > - Ia32/CpuFlushTlb.nasm| INTEL
> > -
> > Ia32/CpuSleepGcc.c | GCC
> > - Ia32/CpuFlushTlbGcc.c | GCC
> > + Ia32/CpuFlushTlb.c
> >
> > [Sources.X64]
> > - X64/CpuFlushTlb.nasm
> > + Ia32/CpuFlushTlb.c
> > X64/CpuSleep.nasm
> >
> >
> > diff --git a/MdePkg/Library/BaseCpuLib/Ia32/CpuFlushTlb.c
> > b/MdePkg/Library/BaseCpuLib/Ia32/CpuFlushTlb.c
> > index 549f4eb8a0..17a351d054 100644
> > --- a/MdePkg/Library/BaseCpuLib/Ia32/CpuFlushTlb.c
> > +++ b/MdePkg/Library/BaseCpuLib/Ia32/CpuFlushTlb.c
> > @@ -1,11 +1,14 @@
> > /** @file
> > - CpuFlushTlb function.
> > + CpuFlushTlb function for Ia32/X64.
> >
> > - Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
> > + Copyright (c) 2006 - 2022, Intel Corporation. All rights
> > + reserved.<BR> Portions copyright (c) 2008 - 2009, Apple Inc. All
> > + rights reserved.<BR>
> > SPDX-License-Identifier: BSD-2-Clause-Patent
> >
> > **/
> >
> > +#include <Library/BaseLib.h>
> > +
> > /**
> > Flushes all the Translation Lookaside Buffers(TLB) entries in a CPU.
> >
> > @@ -18,8 +21,5 @@ CpuFlushTlb (
> > VOID
> > )
> > {
> > - _asm {
> > - mov eax, cr3
> > - mov cr3, eax
> > - }
> > + AsmWriteCr3 (AsmReadCr3 ());
> > }
> > diff --git a/MdePkg/Library/BaseCpuLib/Ia32/CpuFlushTlb.nasm
> > b/MdePkg/Library/BaseCpuLib/Ia32/CpuFlushTlb.nasm
> > deleted file mode 100644
> > index bc3b68e3f2..0000000000
> > --- a/MdePkg/Library/BaseCpuLib/Ia32/CpuFlushTlb.nasm
> > +++ /dev/null
> > @@ -1,31 +0,0 @@
> > -;------------------------------------------------------------------------------ ; -;
> > Copyright (c) 2006, Intel Corporation. All rights reserved.<BR> -; SPDX-
> > License-Identifier: BSD-2-Clause-Patent -; -; Module Name:
> > -;
> > -; CpuFlushTlb.Asm
> > -;
> > -; Abstract:
> > -;
> > -; CpuFlushTlb function
> > -;
> > -; Notes:
> > -;
> > -;------------------------------------------------------------------------------
> > -
> > - SECTION .text
> > -
> > -;------------------------------------------------------------------------------
> > -; VOID
> > -; EFIAPI
> > -; CpuFlushTlb (
> > -; VOID
> > -; );
> > -;------------------------------------------------------------------------------
> > -global ASM_PFX(CpuFlushTlb)
> > -ASM_PFX(CpuFlushTlb):
> > - mov eax, cr3
> > - mov cr3, eax ; moving to CR3 flushes TLB
> > - ret
> > -
> > diff --git a/MdePkg/Library/BaseCpuLib/Ia32/CpuFlushTlbGcc.c
> > b/MdePkg/Library/BaseCpuLib/Ia32/CpuFlushTlbGcc.c
> > deleted file mode 100644
> > index ee44f2ea6e..0000000000
> > --- a/MdePkg/Library/BaseCpuLib/Ia32/CpuFlushTlbGcc.c
> > +++ /dev/null
> > @@ -1,25 +0,0 @@
> > -/** @file
> > - CpuFlushTlb function for Ia32/X64 GCC.
> > -
> > - Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
> > - Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
> > - SPDX-License-Identifier: BSD-2-Clause-Patent
> > -
> > -**/
> > -
> > -#include <Library/BaseLib.h>
> > -
> > -/**
> > - Flushes all the Translation Lookaside Buffers(TLB) entries in a CPU.
> > -
> > - Flushes all the Translation Lookaside Buffers(TLB) entries in a CPU.
> > -
> > -**/
> > -VOID
> > -EFIAPI
> > -CpuFlushTlb (
> > - VOID
> > - )
> > -{
> > - AsmWriteCr3 (AsmReadCr3 ());
> > -}
> > diff --git a/MdePkg/Library/BaseCpuLib/X64/CpuFlushTlb.nasm
> > b/MdePkg/Library/BaseCpuLib/X64/CpuFlushTlb.nasm
> > deleted file mode 100644
> > index 8ddf7a2864..0000000000
> > --- a/MdePkg/Library/BaseCpuLib/X64/CpuFlushTlb.nasm
> > +++ /dev/null
> > @@ -1,32 +0,0 @@
> > -;------------------------------------------------------------------------------ ; -;
> > Copyright (c) 2006, Intel Corporation. All rights reserved.<BR> -; SPDX-
> > License-Identifier: BSD-2-Clause-Patent -; -; Module Name:
> > -;
> > -; CpuFlushTlb.Asm
> > -;
> > -; Abstract:
> > -;
> > -; CpuFlushTlb function
> > -;
> > -; Notes:
> > -;
> > -;------------------------------------------------------------------------------
> > -
> > - DEFAULT REL
> > - SECTION .text
> > -
> > -;------------------------------------------------------------------------------
> > -; VOID
> > -; EFIAPI
> > -; CpuFlushTlb (
> > -; VOID
> > -; );
> > -;------------------------------------------------------------------------------
> > -global ASM_PFX(CpuFlushTlb)
> > -ASM_PFX(CpuFlushTlb):
> > - mov rax, cr3
> > - mov cr3, rax
> > - ret
> > -
> > --
> > 2.31.1.windows.1
> >
> >
> >
> >
> >
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