lkml.org 
[lkml]   [2015]   [Sep]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of 'global_lock'
From
On 25 September 2015 at 13:33, Rafael J. Wysocki <rjw@rjwysocki.net> wrote:
> You're going to change that into bool in the next patch, right?

Yeah.

> So what if bool is a byte and the field is not word-aligned

Its between two 'unsigned long' variables today, and the struct isn't packed.
So, it will be aligned, isn't it?

> and changing
> that byte requires a read-modify-write. How do we ensure that things remain
> consistent in that case?

I didn't understood why a read-modify-write is special here? That's
what will happen
to most of the non-word-sized fields anyway?

Probably I didn't understood what you meant..

--
viresh


\
 
 \ /
  Last update: 2015-09-25 22:41    [W:0.082 / U:0.760 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site