Re: [MiNT] Pexec and cache

[Alan Hourihane <alanh@fairlite.co.uk>]

On 01/23/13 21:36, Miro Kropáček wrote:
> Hi,
>
> I'll be extremely happy if someone corrects me but I can't see a cache 
> invalidation code for Pexec anywhere in the kernel. Is that right?
>
> I just discovered a bug in CT60 TOS's Pexec(), Didier only *flushes* 
> the caches but not invalidate them which leads to horrible crashes if 
> you use Pexec( PE_LOAD, ...) very intensively. This was bugging me for 
> weeks, I couldn't understand how it's possible my plugins work 
> perfectly on (cache-less) Aranym and Hatari and crashing from time to 
> time on simplest (plugin) functions. As soon as I added 'cpusha bc' + 
> 'cinva bc' combo after the Pexec() call, it started to work wonderfully.
>
> Therefore I was curious how it's done in the kernel (as the kernel 
> replaces CT60's Pexec) and I see nothing!

Patches and a test case speak volumes. Any chance ?

Thanks,

Alan.