Re: [PATCH 3/9] efi/x86: Move efi stub globals from .bss to .data

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To: Brian Gerst <brgerst@xxxxxxxxx>
Subject: Re: [PATCH 3/9] efi/x86: Move efi stub globals from .bss to .data
From: Arvind Sankar <nivedita@xxxxxxxxxxxx>
Date: Thu, 9 Apr 2020 17:08:47 -0400
Cc: Ard Biesheuvel <ardb@xxxxxxxxxx>, linux-efi@xxxxxxxxxxxxxxx, Ingo Molnar <mingo@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, Arvind Sankar <nivedita@xxxxxxxxxxxx>, Borislav Petkov <bp@xxxxxxx>, Colin Ian King <colin.king@xxxxxxxxxxxxx>, Gary Lin <glin@xxxxxxxx>, Jiri Slaby <jslaby@xxxxxxx>, Sergey Shatunov <me@xxxxxxx>, Takashi Iwai <tiwai@xxxxxxx>
In-reply-to: <CAMzpN2jFbf8k99pWaTYRBmSB+iNAKYsufjEhqO6Vv0qxAcHyGA@mail.gmail.com>
References: <20200409130434.6736-1-ardb@kernel.org> <20200409130434.6736-4-ardb@kernel.org> <CAMzpN2gJWwVun1Kp6vGuza9LM5KpB=0EwsP8x8eOJQuDGh38Hg@mail.gmail.com> <CAMzpN2jFbf8k99pWaTYRBmSB+iNAKYsufjEhqO6Vv0qxAcHyGA@mail.gmail.com>

On Thu, Apr 09, 2020 at 04:53:07PM -0400, Brian Gerst wrote:
> > Can we use the -fno-zero-initialized-in-bss compiler flag instead of
> > explicitly marking global variables?
> 
> Scratch that.  Apparently it only works when a variable is explicitly
> initialized to zero.
> 
> --
> Brian Gerst

Right, there doesn't seem to be a compiler option to turn off the use of
.bss altogether.

Follow-Ups:
- Re: [PATCH 3/9] efi/x86: Move efi stub globals from .bss to .data
  - From: Ard Biesheuvel

References:
- [GIT PULL 0/9] EFI fixes for v5.7-rc
  - From: Ard Biesheuvel
- [PATCH 3/9] efi/x86: Move efi stub globals from .bss to .data
  - From: Ard Biesheuvel
- Re: [PATCH 3/9] efi/x86: Move efi stub globals from .bss to .data
  - From: Brian Gerst
- Re: [PATCH 3/9] efi/x86: Move efi stub globals from .bss to .data
  - From: Brian Gerst

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