Re: [PATCH] mm: provide a fallback for PAGE_KERNEL_RO for architectures

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On Wed, May 02, 2018 at 03:11:13PM +0000, Luis R. Rodriguez wrote:
> On Wed, May 02, 2018 at 12:08:57PM +0200, Geert Uytterhoeven wrote:
> > Hi Luis,
> > 
> > On Sat, Apr 28, 2018 at 2:15 AM, Luis R. Rodriguez <mcgrof@xxxxxxxxxx> wrote:
> > > Some architectures do not define PAGE_KERNEL_RO, best we can do
> > > for them is to provide a fallback onto PAGE_KERNEL. Remove the
> > > hack from the firmware loader and move it onto the asm-generic
> > > header, and document while at it the affected architectures
> > > which do not have a PAGE_KERNEL_RO:
> > >
> > >   o alpha
> > >   o ia64
> > >   o m68k
> > >   o mips
> > >   o sparc64
> > >   o sparc
> > >
> > > Blessed-by: 0-day
> > > Signed-off-by: Luis R. Rodriguez <mcgrof@xxxxxxxxxx>
> > 
> > I believe the "best we can do" is to add the missing definitions for the
> > architectures where the hardware does support it?
> 
> True, but we cannot wait for every architecture to implement a feature to then
> such generics upstream, 

Come to think of it your point was the wording. I changed it to not be as misleading.

  Luis




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