Re: [Gems-users] invalidating a cache block

[Mladen Nikitovic <mladen@xxxxxx>]

Sorry, I forgot to actually specify my question :)

Since I don't belive the stxa instruction will fully generate the 
desired events I wonder how I can achieve that in ruby. How can I 
trigger the protocol to do the invalidation and possible writebacks for me?
Regards,
/Mladen

Mladen Nikitovic wrote:
> Hi,
>
> I would like to go through a cache and invalidate each entry 
> block-by-block. I would like to do it in a way such that necessary 
> events within ruby (replacements if needed) are triggered.
> I found a code in opensolaris that is supposed to flush the cache (see 
> below) but I suppose that the instruction stxa will not trigger the 
> expected events in GEMS?
> #define CH_CACHE_FLUSHALL(arg1, arg2, tmp1)
>
>   sub arg1,arg2,tmp1;
> 1:
>   stxa %g0, [tmp1]ASI_DC_TAG;
>   membar #sync;
>   cmp %g0, tmp1;
>   bne,pt %icc, 1b;
>   sub tmp1, arg2, tmp1;
>
>
> I'm using the MOESI_CMP_directory protocol.
>
> Thanks.
>
> Regards,
> Mladen
>
>
>
>
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