Re: kern/51921: src/sys/arch/arm/arm/cpufunc.c:3079: possible typo ?

["Jonathan A. Kollasch" <jakllsch%kollasch.net@localhost>]

On Sun, Jan 29, 2017 at 07:45:55AM +0800, Paul Goyette wrote:
> On Sat, 28 Jan 2017, dcb314%hotmail.com@localhost wrote:
> 
> >Source code is
> >
> >   cpuctrl |= (0x5 << 16) | (1 < 22);
> >
> >But maybe this code was intended:
> >
> >   cpuctrl |= (0x5 << 16) | (1 << 22);
> 
> In any case, we really should have meaningfully-named macros for
> these values, rather than "magic numbers".

In the Cortex-A5 TRM SCTLR bits 18, 16, and 6,5,4,3 are
Reserved and Read-As-One/Writes-Ignored, other Reserved bits here are
Read-As-Zero/Writes-Ignored.  I do not know if this is also true of the
PJ4B ARMv7 implementation.