Re: Syncing CPU caches from userland on MIPS

[Arnaud Patard (Rtp) <arnaud.patard@rtp-net.org>]

Florian Lohoff <flo@rfc822.org> writes:

> On Wed, Nov 25, 2009 at 03:39:01PM +0100, Arnaud Patard wrote:
>> > Would this only evict stuff from the ICACHE? When trying to execute
>> > a just written buffer and with a writeback DCACHE you would need to 
>> > explicitly writeback the DCACHE to memory and invalidate the ICACHE.
>> 
>> we already though about using BCACHE instead of ICACHE only but it
>> didn't make any difference. the bug is still there.
>
> My understanding is you need both ...
>
> FLUSH/WRITEBACK the dcache and INVALIDATE the icache - the icache needs
> to load the data which is in the dcache via memory.

I undertstood that using BCACHE would be better but still, it doesn't
solve our issue. Can we please go ahead ? :)

Arnaud