[lkml]   [2006]   [Mar]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] Document Linux's memory barriers
Paul Mackerras wrote:
> David Howells writes:

>>+ The way to deal with this is to insert an I/O memory barrier between the
>>+ two accesses:
>>+ *ADR = ctl_reg_3;
>>+ mb();
>>+ reg = *DATA;
> Ummm, this implies mb() is "an I/O memory barrier". I can see people
> getting confused if they read this and then see mb() being used when
> no I/O is being done.

Isn't it? Why wouldn't you just use smp_mb() if no IO is being done?

SUSE Labs, Novell Inc.
Send instant messages to your online friends

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2006-03-08 08:44    [W:0.202 / U:25.780 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site