lkml.org 
[lkml]   [2011]   [Jan]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [cpuops cmpxchg double V2 1/4] Generic support for this_cpu_cmpxchg_double
On 01/21/2011 09:19 AM, Tejun Heo wrote:
> On Fri, Jan 21, 2011 at 09:13:41AM -0800, H. Peter Anvin wrote:
>> We could do cmpxchg with a structure... the problem with a lon int
>> type is that Cristoph ran into bugs with __int128 on 64 bits.
>
> But, IIRC, the problem with int128 was with passing it as parameter
> and return value. We don't have to do that. We'll be just using it
> as a data storage / container type. Or even that is broken?

Well, part of the point was to pass in registers.

No idea on the data storage type.

-hpa


\
 
 \ /
  Last update: 2011-01-24 07:05    [W:0.089 / U:0.528 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site