lkml.org 
[lkml]   [2013]   [Aug]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [-next] openvswitch BUILD_BUG_ON failed
On Thu, Aug 29, 2013 at 2:21 PM, Geert Uytterhoeven
<geert@linux-m68k.org> wrote:
> However, I have some doubts about other alignment "enforcements":
>
> "__aligned(__alignof__(long))" makes the whole struct aligned to the
> alignment rule for "long":
> 1. This is only 2 bytes on m68k, i.e. != sizeof(long).
> 2. This is 4 bytes on many 32-bit platforms, which may be less than the
> default alignment for "__be64" (cfr. some members of struct
> ovs_key_ipv4_tunnel), so this may make those 64-bit members unaligned.

Do any of those 32-bit architectures actually care about alignment of
64 bit values? On 32-bit x86, a long is 32 bits but the alignment
requirement of __be64 is also 32 bit.


\
 
 \ /
  Last update: 2013-08-30 00:21    [W:0.056 / U:1.904 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site