linux-kernel - Re: [PATCH v2 09/36] x86/asm: Re-add manual CFI infrastructure

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Message-ID: <20151006082305.GB18287@gmail.com>
Date:	Tue, 6 Oct 2015 10:23:06 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Andy Lutomirski <luto@...nel.org>
Cc:	x86@...nel.org, linux-kernel@...r.kernel.org,
	Brian Gerst <brgerst@...il.com>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Borislav Petkov <bp@...en8.de>
Subject: Re: [PATCH v2 09/36] x86/asm: Re-add manual CFI infrastructure


* Andy Lutomirski <luto@...nel.org> wrote:

> Commit 131484c8da97 ("x86/debug: Remove perpetually broken,
> unmaintainable dwarf annotations") removed all the manual DWARF
> annotations outside the vDSO.  It also removed the macros we used
> for the manual annotations.
> 
> Re-add the macros so that we can clean up the vDSO annotations.
> 
> Signed-off-by: Andy Lutomirski <luto@...nel.org>
> ---
>  arch/x86/Makefile             |  10 ++-
>  arch/x86/include/asm/dwarf2.h | 170 ++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 178 insertions(+), 2 deletions(-)
>  create mode 100644 arch/x86/include/asm/dwarf2.h

Please don't add all this gunk back in!

AFAICS the later patches use just a very small subset - add only the minimal 
subset absolutely needed.

Thanks,

	Ingo
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