lkml.org 
[lkml]   [2014]   [Feb]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v4 2/5] arm: add new asm macro update_sctlr
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


\
 
 \ /
  Last update: 2014-02-03 20:21    [W:0.048 / U:0.080 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site