Re: [edk2-devel] [PATCH] MdeModulePkg: Retrive boot manager menu from any fv

["Zhiguang Liu" <zhiguang.liu@intel.com>]

Hi Hao,

I don't have the data about the boot performance.
However, I think it has little impact for the originally working platforms.
In function GetSectionFromAnyFv, It will first search section in current FV. 
If it finds the section, it will return succuss. 
Only if it can't find the section, it will take extra time to search in other FV. This case won't happen in originally working platforms

Thanks
Zhiguang

> -----Original Message-----
> From: Wu, Hao A <hao.a.wu@intel.com>
> Sent: Monday, May 10, 2021 4:42 PM
> To: devel@edk2.groups.io; Liu, Zhiguang <zhiguang.liu@intel.com>
> Cc: Wang, Jian J <jian.j.wang@intel.com>; Gao, Zhichao
> <zhichao.gao@intel.com>; Ni, Ray <ray.ni@intel.com>
> Subject: RE: [edk2-devel] [PATCH] MdeModulePkg: Retrive boot manager
> menu from any fv
> 
> > -----Original Message-----
> > From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of
> > Zhiguang Liu
> > Sent: Monday, May 10, 2021 4:16 PM
> > To: devel@edk2.groups.io
> > Cc: Wang, Jian J <jian.j.wang@intel.com>; Wu, Hao A
> > <hao.a.wu@intel.com>; Gao, Zhichao <zhichao.gao@intel.com>; Ni, Ray
> > <ray.ni@intel.com>
> > Subject: [edk2-devel] [PATCH] MdeModulePkg: Retrive boot manager
> menu
> > from any fv
> >
> > REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3384
> >
> > Currently, UefiBootManagerLib has the below assumption:
> >   Assume the BootManagerMenuFile is in the same FV as the module links
> > to this library.
> > It has some limitation now, so remove the assumption.
> 
> 
> Hello Zhiguang,
> 
> Sorry for a question. Do you know what is the boot performance impact if
> 'GetSectionFromAnyFv()' is being used?
> Any data on the impact for originally working platforms?
> 
> Best Regards,
> Hao Wu
> 
> 
> >
> > Cc: Jian J Wang <jian.j.wang@intel.com>
> > Cc: Hao A Wu <hao.a.wu@intel.com>
> > Cc: Zhichao Gao <zhichao.gao@intel.com>
> > Cc: Ray Ni <ray.ni@intel.com>
> > Signed-off-by: Zhiguang Liu <zhiguang.liu@intel.com>
> > ---
> >  MdeModulePkg/Library/UefiBootManagerLib/BmBoot.c | 7 +++----
> >  1 file changed, 3 insertions(+), 4 deletions(-)
> >
> > diff --git a/MdeModulePkg/Library/UefiBootManagerLib/BmBoot.c
> > b/MdeModulePkg/Library/UefiBootManagerLib/BmBoot.c
> > index 6cc34d29c0..b8df4d590f 100644
> > --- a/MdeModulePkg/Library/UefiBootManagerLib/BmBoot.c
> > +++ b/MdeModulePkg/Library/UefiBootManagerLib/BmBoot.c
> > @@ -2,7 +2,7 @@
> >    Library functions which relates with booting.  Copyright (c) 2019,
> > NVIDIA CORPORATION. All rights reserved.-Copyright (c) 2011 - 2020,
> > Intel Corporation. All rights reserved.<BR>+Copyright (c) 2011 - 2021,
> > Intel Corporation. All rights reserved.<BR> (C) Copyright 2015-2021
> > Hewlett Packard Enterprise Development LP<BR> SPDX-License-Identifier:
> > BSD-2- Clause-Patent @@ -2385,7 +2385,6 @@
> > EfiBootManagerRefreshAllBootOption (
> >    This function is called to get or create the boot option for the Boot
> Manager
> > Menu.    The Boot Manager Menu is shown after successfully booting a
> boot
> > option.-  Assume the BootManagerMenuFile is in the same FV as the
> module
> > links to this library.    @param  BootOption    Return the boot option of the
> > Boot Manager Menu @@ -2437,7 +2436,7 @@
> BmRegisterBootManagerMenu (
> >     if (DevicePath == NULL) {     Data = NULL;-    Status = GetSectionFromFv (+
> > Status = GetSectionFromAnyFv (                PcdGetPtr
> > (PcdBootManagerMenuFile),                EFI_SECTION_PE32,                0,@@ -
> > 2455,7 +2454,7 @@ BmRegisterBootManagerMenu (
> >      //     // Get BootManagerMenu application's description from EFI User
> > Interface Section.     //-    Status = GetSectionFromFv (+    Status =
> > GetSectionFromAnyFv (                PcdGetPtr (PcdBootManagerMenuFile),
> > EFI_SECTION_USER_INTERFACE,                0,--
> > 2.30.0.windows.2
> >
> >
> >
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