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

Matthew Wilcox
2018-05-09T01:39:35Z

On Wed, May 09, 2018 at 01:04:38AM +0000, Luis R. Rodriguez wrote:
> On Fri, Apr 27, 2018 at 08:18:10PM -0700, Matthew Wilcox wrote:
> > ia64: Add PAGE_KERNEL_RO and PAGE_KERNEL_EXEC
> >
> > The rest of the kernel was falling back to simple PAGE_KERNEL pages; using
> > PAGE_KERNEL_RO and PAGE_KERNEL_EXEC provide better protection against
> > unintended writes.
> >
> > Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
>
> Nice, should I queue this into my series as well?

A little reluctant to queue it without anyone having tested it. Heck,
I didn't even check it compiled ;-)

We used to just break architectures and let them fix it up for this kind
of thing. That's not really acceptable nowadays, but I don't know how
we get arch maintainers to fix up their ports now.