Re: [PATCH -mm] -funsigned-char, x86: make struct p4_event_bind::cntr signed array

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Subject: Re: [PATCH -mm] -funsigned-char, x86: make struct p4_event_bind::cntr signed array
From: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Date: Fri, 21 Oct 2022 00:34:37 +0300
Cc: Kees Cook <keescook@xxxxxxxxxxxx>, "Jason A. Donenfeld" <Jason@xxxxxxxxx>, Alexey Dobriyan <adobriyan@xxxxxxxxx>, akpm@xxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, mm-commits@xxxxxxxxxxxxxxx, masahiroy@xxxxxxxxxx, gregkh@xxxxxxxxxxxxxxxxxxx, Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
In-reply-to: <CAHk-=wjvp=ys2adnWwc1PNt3OrZ_0EkFaUcvjiVuOoVNjX_+AA@mail.gmail.com>
Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo
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Reply-to: linux-kernel@xxxxxxxxxxxxxxx

On Thu, Oct 20, 2022 at 01:17:33PM -0700, Linus Torvalds wrote:
> On Thu, Oct 20, 2022 at 12:39 PM Linus Torvalds
> <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:

...

> And in some cases the differences are enormous:
> 
>  - drivers/net/wireless/ralink/rt2x00/rt2800lib.c generates a 220kB diff
> 
> which seems to be due to entirely different inlining decisions or
> something, and the differences are so enormous that I didn't even
> start looking at the cause.

This one is what we start the epopee from. I think Jason handled it in his last
patch against this certain driver.

-- 
With Best Regards,
Andy Shevchenko

Follow-Ups:
- Re: [PATCH -mm] -funsigned-char, x86: make struct p4_event_bind::cntr signed array
  - From: Jason A. Donenfeld

References:
- + kbuild-treat-char-as-always-unsigned.patch added to mm-nonmm-unstable branch
  - From: Andrew Morton
- [PATCH -mm] -funsigned-char, x86: make struct p4_event_bind::cntr signed array
  - From: Alexey Dobriyan
- Re: [PATCH -mm] -funsigned-char, x86: make struct p4_event_bind::cntr signed array
  - From: Jason A. Donenfeld
- Re: [PATCH -mm] -funsigned-char, x86: make struct p4_event_bind::cntr signed array
  - From: Linus Torvalds
- Re: [PATCH -mm] -funsigned-char, x86: make struct p4_event_bind::cntr signed array
  - From: Jason A. Donenfeld
- Re: [PATCH -mm] -funsigned-char, x86: make struct p4_event_bind::cntr signed array
  - From: Linus Torvalds
- Re: [PATCH -mm] -funsigned-char, x86: make struct p4_event_bind::cntr signed array
  - From: Kees Cook
- Re: [PATCH -mm] -funsigned-char, x86: make struct p4_event_bind::cntr signed array
  - From: Linus Torvalds
- Re: [PATCH -mm] -funsigned-char, x86: make struct p4_event_bind::cntr signed array
  - From: Linus Torvalds

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