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From: David Laight <David.Laight@ACULAB.COM>
To: 'Nick Desaulniers' <ndesaulniers@google.com>,
	"arnd@arndb.de" <arnd@arndb.de>
Cc: "borntraeger@de.ibm.com" <borntraeger@de.ibm.com>,
	"kernel-team@android.com" <kernel-team@android.com>,
	"linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"luc.vanoostenryck@gmail.com" <luc.vanoostenryck@gmail.com>,
	"mpe@ellerman.id.au" <mpe@ellerman.id.au>,
	"peterz@infradead.org" <peterz@infradead.org>,
	"segher@kernel.crashing.org" <segher@kernel.crashing.org>,
	"torvalds@linux-foundation.org" <torvalds@linux-foundation.org>,
	"will@kernel.org" <will@kernel.org>,
	"masahiroy@kernel.org" <masahiroy@kernel.org>
Subject: RE: [RFC PATCH 1/8] compiler/gcc: Emit build-time warning for GCC prior to version 4.8
Date: Wed, 15 Jan 2020 10:35:07 +0000
Message-ID: <25ac63eaebb44564b830c697c27f959c@AcuMS.aculab.com> (raw)
In-Reply-To: <20200114213914.198223-1-ndesaulniers@google.com>

From: Nick Desaulniers
> Sent: 14 January 2020 21:39
...
> Yeah, hard requirement sounds good to me. Arnd, do you have stats on which
> distros have which versions of GCC (IIRC, you had some stats for the GCC 4.6
> upgrade)? This allows us to clean up more cruft in the kernel (grep for
> GCC_VERSION).

FWIW My Ubuntu 13.04 system has gcc 4.7.3.
(Actually, looking in /usr/bin there is a copy of 4.8.1 from the original install.)

	David

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Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)

  reply index

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-10 16:56 [RFC PATCH 0/8] Rework READ_ONCE() to improve codegen Will Deacon
2020-01-10 16:56 ` [RFC PATCH 1/8] compiler/gcc: Emit build-time warning for GCC prior to version 4.8 Will Deacon
2020-01-10 17:35   ` Arnd Bergmann
2020-01-10 17:53     ` Joe Perches
2020-01-13 14:39       ` Arnd Bergmann
2020-01-13 15:35         ` Masahiro Yamada
2020-01-13 14:27     ` Will Deacon
2020-01-14 21:39     ` Nick Desaulniers
2020-01-15 10:35       ` David Laight [this message]
2020-01-15 10:49       ` Arnd Bergmann
2020-01-10 16:56 ` [RFC PATCH 2/8] netfilter: Avoid assigning 'const' pointer to non-const pointer Will Deacon
2020-01-10 16:56 ` [RFC PATCH 3/8] fault_inject: Don't rely on "return value" from WRITE_ONCE() Will Deacon
2020-01-10 16:56 ` [RFC PATCH 4/8] READ_ONCE: Simplify implementations of {READ,WRITE}_ONCE() Will Deacon
2020-01-10 16:56 ` [RFC PATCH 5/8] READ_ONCE: Enforce atomicity for {READ,WRITE}_ONCE() memory accesses Will Deacon
2020-01-10 19:24   ` Arnd Bergmann
2020-01-13 16:16     ` Will Deacon
2020-01-10 16:56 ` [RFC PATCH 6/8] READ_ONCE: Drop pointer qualifiers when reading from scalar types Will Deacon
2020-01-10 18:54   ` Linus Torvalds
2020-01-13 14:59     ` Will Deacon
2020-01-13 17:42       ` Luc Van Oostenryck
2020-01-13 19:31       ` Linus Torvalds
2020-01-10 16:56 ` [RFC PATCH 7/8] locking/barriers: Use '__unqual_scalar_typeof' for load-acquire macros Will Deacon
2020-01-10 19:42   ` Arnd Bergmann
2020-01-13 15:01     ` Will Deacon
2020-01-10 16:56 ` [RFC PATCH 8/8] arm64: barrier: Use '__unqual_scalar_typeof' for acquire/release macros Will Deacon
2020-01-10 17:45   ` Mark Rutland
2020-01-10 17:58 ` [RFC PATCH 0/8] Rework READ_ONCE() to improve codegen Arnd Bergmann
2020-01-10 19:46 ` Arnd Bergmann
2020-01-10 20:14   ` Linus Torvalds
2020-01-13 13:03     ` Arnd Bergmann
2020-01-13 11:20 ` David Laight
2020-01-13 12:40 ` Christian Borntraeger

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