From: Arnd Bergmann <arnd@arndb.de>
To: linux-arm-kernel@lists.infradead.org
Cc: Stephen Boyd <sboyd@codeaurora.org>,
        Nicolas Pitre <nicolas.pitre@linaro.org>,
        Peter Maydell <peter.maydell@linaro.org>,
        =?ISO-8859-1?Q?M=E5ns_Rullg=E5rd?= <mans@mansr.com>,
        Russell King - ARM Linux <linux@arm.linux.org.uk>,
        "linux-arm-msm@vger.kernel.org" <linux-arm-msm@vger.kernel.org>,
        Daniel Lezcano <daniel.lezcano@linaro.org>,
        lkml - Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Steven Rostedt <rostedt@goodmis.org>,
        Christopher Covington <cov@codeaurora.org>,
        Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Subject: Re: [RFC/PATCH 0/3] ARM: Use udiv/sdiv for __aeabi_{u}idiv library functions
Date: Wed, 25 Nov 2015 08:21:31 +0100
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On Tuesday 24 November 2015 17:51:37 Stephen Boyd wrote:
> On 11/24, Arnd Bergmann wrote:
> > On Monday 23 November 2015 15:13:52 Stephen Boyd wrote:
> > IOW, anything with CPU implementer 0x56 part 0x581 should use those,
> > while part 0x584 can use the sdiv/udiv that it reports correctly.
> > 
> 
> It looks like we have some sort of function that mostly does
> this, except it doesn't differentiate on that lower bit for 1 vs
> 4. I guess I'll write another one for that.
> 
> static inline int cpu_is_pj4(void)
> {
>         unsigned int id;
> 
>         id = read_cpuid_id();
>         if ((id & 0xff0fff00) == 0x560f5800)
>                 return 1;
> 
>         return 0;
> }

Correct, thanks.

	Arnd
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