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From: Szabolcs Nagy <nsz@port70.net>
To: Catalin Marinas <catalin.marinas@arm.com>
Cc: Russell King - ARM Linux <linux@arm.linux.org.uk>,
	Rich Felker <dalias@libc.org>,
	"musl@lists.openwall.com" <musl@lists.openwall.com>,
	Kees Cook <keescook@chromium.org>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	Andy Lutomirski <luto@amacapital.net>
Subject: Re: ARM atomics overhaul for musl
Date: Mon, 17 Nov 2014 15:11:23 +0100	[thread overview]
Message-ID: <20141117141123.GG10829@port70.net> (raw)
In-Reply-To: <20141117135412.GC29595@e104818-lin.cambridge.arm.com>

* Catalin Marinas <catalin.marinas@arm.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)


  reply	other threads:[~2014-11-17 14:11 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-11-16  5:56 Rich Felker
2014-11-16 16:33 ` Russell King - ARM Linux
2014-11-16 16:50   ` Rich Felker
2014-11-16 17:10     ` Russell King - ARM Linux
2014-11-16 18:27       ` Andy Lutomirski
2014-11-16 18:56         ` Rich Felker
2014-11-16 19:02       ` Rich Felker
2014-11-17 13:54       ` Catalin Marinas
2014-11-17 14:11         ` Szabolcs Nagy [this message]
2014-11-17 14:47           ` Catalin Marinas
2014-11-17 14:39         ` Russell King - ARM Linux
2014-11-17 15:26           ` Catalin Marinas
2014-11-17 15:47             ` Russell King - ARM Linux
2014-11-17 16:19               ` Catalin Marinas
2014-11-17 16:53                 ` Russell King - ARM Linux
2014-11-17 17:48                   ` Catalin Marinas
2014-11-17 17:38           ` Andy Lutomirski
2014-11-18 10:56             ` Catalin Marinas
2014-11-18 18:14               ` Will Deacon
2014-11-18 18:24                 ` Andy Lutomirski
2014-11-18 19:19                 ` Russell King - ARM Linux
2014-11-19 18:32                 ` Catalin Marinas
2014-11-17 11:48   ` Catalin Marinas
2014-11-17 12:21     ` Arnd Bergmann
2014-11-17 13:30       ` Szabolcs Nagy
2014-11-17 14:34         ` Catalin Marinas
2014-11-16 22:33 ` Jens Gustedt
2014-11-16 23:23   ` Rich Felker

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