Subj : Re: sync vs. eieio on powerpc
To   : comp.programming.threads
From : Joe Seigh
Date : Tue Mar 01 2005 07:04 am

On Tue, 01 Mar 2005 12:04:10 +0100, Alexander Terekhov <terekhov@web.de> wrote:

>
> Joe Seigh wrote:
> [...]
>> I'm guessing isync is "load/load" and "load/store".
>
> I think that in sparc terms, it is more proper to view it as
> store/load and store/store in conjunction with successful store
> conditional.
>
Actually, only in conjunction with a load reserved/store conditional
on the same memory location.  And some pretty specific overall logic
at that.  In general, it's incorrect to characterize it as an acquire
with anything but a prior load.

-- 
Joe Seigh

.