lkml.org 
[lkml]   [2008]   [Jun]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: ABI change for device drivers using future AVX instruction set
Andi Kleen wrote:



>> If you use xsave, I don't see how this is different to the user fpu save
>> area.
>>
>
> For once there's no clear error handling path for allocation failures
> on the (arbitarily sized) xsave state. On user code that can be barely
> tolerated, but for the kernel it would be deadly.
>

if (kernel_fpu_begin() < 0)
goto no_sse;

The question is not if it can be done or not, it's whether making raid
preemptible is worthwhile, and whether we see/want more sse/avx
accelerated drivers or not.

--
error compiling committee.c: too many arguments to function



\
 
 \ /
  Last update: 2008-06-29 15:33    [W:0.063 / U:0.296 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site