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Date: Mon, 13 Apr 2020 22:00:49 +0100 From: Russell King - ARM Linux admin <linux@...linux.org.uk> To: Nick Desaulniers <ndesaulniers@...gle.com> Cc: Linus Walleij <linus.walleij@...aro.org>, Peter Smith <Peter.Smith@....com>, Stefan Agner <stefan@...er.ch>, David Howells <dhowells@...hat.com>, Mauro Carvalho Chehab <mchehab+samsung@...nel.org>, Manoj Gupta <manojgupta@...gle.com>, Benjamin Gaignard <benjamin.gaignard@...aro.org>, "Joel Fernandes (Google)" <joel@...lfernandes.org>, Jian Cai <caij2003@...il.com>, Bartosz Golaszewski <bgolaszewski@...libre.com>, Ilie Halip <ilie.halip@...il.com>, Masahiro Yamada <masahiroy@...nel.org>, Krzysztof Kozlowski <krzk@...nel.org>, Ard Biesheuvel <ardb@...nel.org>, clang-built-linux <clang-built-linux@...glegroups.com>, Sami Tolvanen <samitolvanen@...gle.com>, Masami Hiramatsu <mhiramat@...nel.org>, Arnd Bergmann <arnd@...db.de>, "Steven Rostedt (VMware)" <rostedt@...dmis.org>, Jian Cai <jiancai@...gle.com>, Doug Anderson <armlinux@...isordat.com>, Dan Williams <dan.j.williams@...el.com>, Linux ARM <linux-arm-kernel@...ts.infradead.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Patrick Bellasi <patrick.bellasi@....com>, "Eric W. Biederman" <ebiederm@...ssion.com>, Tejun Heo <tj@...nel.org>, Andrew Morton <akpm@...ux-foundation.org> Subject: Re: [PATCH] ARM: do not assemble iwmmxt.S with LLVM toolchain On Mon, Apr 13, 2020 at 12:23:38PM -0700, Nick Desaulniers wrote: > On Fri, Apr 10, 2020 at 5:33 AM Russell King - ARM Linux admin > <linux@...linux.org.uk> wrote: > > > > For older CPUs, it doesn't matter what the latest ARM ARM says, the > > appropriate version of the ARM ARM is the one relevant for the CPU > > architecture. This is a mistake frequently made, and it's been pointed > > out by Arm Ltd in the past (before ARMv6 even came on the scene) that > > keeping older revisions is necessary if you want to be interested in > > the older architectures. > > As if it never existed *waves hands*. Interesting. Does ARM still > distribute these older reference manuals? Do you keep copies of the > older revisions? I keep copies of every document I've needed that I'm allowed to keep as a general rule, including the early paper copies of the ARM architecture reference manual. I even have the original VLSI ARM2 databook. For the ARMv5TE architecture, you're looking for DDI0100E which can be found via google. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 10.2Mbps down 587kbps up
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