[PATCH 1/2] powerpc: Allow flush_icache_range to work across ranges >4GB

[Alastair D'Silva]

On Fri, 2019-08-09 at 10:59 +0200, Christophe Leroy wrote:
> 
> Le 09/08/2019 à 02:45, Alastair D'Silva a écrit :
> > From: Alastair D'Silva <alastair at d-silva.org>
> > 
> > When calling flush_icache_range with a size >4GB, we were masking
> > off the upper 32 bits, so we would incorrectly flush a range
> > smaller
> > than intended.
> > 
> > This patch replaces the 32 bit shifts with 64 bit ones, so that
> > the full size is accounted for.
> > 
> > Heads-up for backporters: the old version of flush_dcache_range is
> > subject to a similar bug (this has since been replaced with a C
> > implementation).
> 
> Can you submit a patch to stable, explaining this ?
> 

This patch was sent to stable too - or did you mean send another patch
for the stable asm version of flush_dcache_range?

-- 
Alastair D'Silva
Open Source Developer
Linux Technology Centre, IBM Australia
mob: 0423 762 819