Re: [PATCH v4 2/5] arm: add new asm macro update_sctlr

[Leif Lindholm]

On Mon, Feb 03, 2014 at 04:57:18PM +0000, Will Deacon wrote:
> > mov[tw]: why?
> > Then we end up battling different available immediate fields in A32/T32
> > instruction sets and v5/v6/v7 architecture versions.
> 
> I was making the assumption that UEFI was going to be v7 only... is this not
> true?

There is no such requirement in the specification.
It even mentions requirements for ARMv4 in one place :)

But I also don't understand why ldr= should be avoided.
This is not performance sensitive (called once on system boot), and
it's already executing with the caches off, so even if it ends up
being a literal load it does not pollute.

/
    Leif
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/