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Message-ID: <20141117141123.GG10829@port70.net>
Date: Mon, 17 Nov 2014 15:11:23 +0100
From: Szabolcs Nagy <nsz@...t70.net>
To: Catalin Marinas <catalin.marinas@....com>
Cc: Russell King - ARM Linux <linux@....linux.org.uk>,
Rich Felker <dalias@...c.org>,
"musl@...ts.openwall.com" <musl@...ts.openwall.com>,
Kees Cook <keescook@...omium.org>,
"linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>,
Andy Lutomirski <luto@...capital.net>
Subject: Re: ARM atomics overhaul for musl
* Catalin Marinas <catalin.marinas@....com> [2014-11-17 13:54:13 +0000]:
> ARM11MPCore). ARM is trying to move away from architecture version
> numbers, which are rather useful for marketing, to proper feature
> detection based on CPUID. Whether there is an ARMv9 or not, it's
> irrelevant to what Linux should do (i.e. use CPUID rather than guess
> features based on architecture version numbers).
>
how to use cpuid from userspace?
should linux export those bits into hwcap?
(i assume all relevant info will be available in /proc/cpuinfo but
that does not work for libc)
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