linux-kernel - [PATCH 0/2] Kconfig: -O3 enablement

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Message-Id: <20220621133526.29662-1-mikoxyzzz@gmail.com>
Date:   Tue, 21 Jun 2022 15:35:24 +0200
From:   Miko Larsson <mikoxyzzz@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     Miko Larsson <mikoxyzzz@...il.com>, linux-kbuild@...r.kernel.org,
        x86@...nel.org, Nathan Chancellor <nathan@...nel.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Sean Christopherson <seanjc@...gle.com>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Chris Down <chris@...isdown.name>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        John Ogness <john.ogness@...utronix.de>,
        Elliot Berman <quic_eberman@...cinc.com>,
        Oleksandr Natalenko <oleksandr@...hat.com>
Subject: [PATCH 0/2] Kconfig: -O3 enablement 

Hi,

This very small series allows -O3 to be used for all architectures. The
first patch marks -O3 as experimental, with the reasoning being that it
might expose unwanted regressions to users, and the second patch
actually allows -O3 by removing the "depend on ARC" string.

The reasoning behind this series is to open up -O3 so that bugs related
to it (both compiler-related and kernel-related) can be discovered by
eyeballs wanting to improve the "-O3 experience," as that might be
beneficial to both compilers and the kernel. This has been attempted
before [1], but unfortunately nothing ever came of it.

[1] https://lore.kernel.org/lkml/20191211104619.114557-1-oleksandr@redhat.com/

Cc: linux-kbuild@...r.kernel.org
Cc: x86@...nel.org
Cc: Nathan Chancellor <nathan@...nel.org>
Cc: Vlastimil Babka <vbabka@...e.cz>
Cc: Nick Desaulniers <ndesaulniers@...gle.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: Sean Christopherson <seanjc@...gle.com>
Cc: "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc: Arnd Bergmann <arnd@...db.de>
Cc: Chris Down <chris@...isdown.name>
Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc: John Ogness <john.ogness@...utronix.de>
Cc: Elliot Berman <quic_eberman@...cinc.com>
Cc: Oleksandr Natalenko <oleksandr@...hat.com>

Miko Larsson (2):
  Kconfig: Mark -O3 as experimental
  Kconfig: Allow -O3 for all architectures

 init/Kconfig | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

-- 
2.36.1