linux-kernel - Re: [PATCH v2 0/2] mm: PAGE_KERNEL

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Message-ID: <20180510171520.GD27853@wotan.suse.de>
Date:   Thu, 10 May 2018 17:15:20 +0000
From:   "Luis R. Rodriguez" <mcgrof@...nel.org>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     "Luis R. Rodriguez" <mcgrof@...nel.org>, arnd@...db.de,
        willy@...radead.org, geert@...ux-m68k.org,
        linux-m68k@...ts.linux-m68k.org, linux-arch@...r.kernel.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/2] mm: PAGE_KERNEL_* fallbacks

On Thu, May 10, 2018 at 08:07:33AM +0200, Greg KH wrote:
> On Wed, May 09, 2018 at 06:44:45PM -0700, Luis R. Rodriguez wrote:
> > While dusting out the firmware loader closet I spotted a PAGE_KERNEL_*
> > fallback hack. This hurts my eyes, and it should also be blinding
> > others. Turns out we have other PAGE_KERNEL_* fallback hacks in
> > other places.
> > 
> > This moves them to asm-generic, and keeps track of architectures which
> > need some love or review. At least 0-day was happy with the changes.
> > 
> > Matthew Wilcox did put together a PAGE_KERNEL_RO patch for ia64, that
> > needs review and testing, and if it goes well it should be merged.
> > 
> > Luis R. Rodriguez (2):
> >   mm: provide a fallback for PAGE_KERNEL_RO for architectures
> >   mm: provide a fallback for PAGE_KERNEL_EXEC for architectures
> > 
> >  drivers/base/firmware_loader/fallback.c |  5 ----
> >  include/asm-generic/pgtable.h           | 36 +++++++++++++++++++++++++
> >  mm/nommu.c                              |  4 ---
> >  mm/vmalloc.c                            |  4 ---
> >  4 files changed, 36 insertions(+), 13 deletions(-)
> 
> No list of changes that happened from v1?  :(

Didn't know you'd want it for such simple patch set, but I'll provide one for v3 and
also list the changes in v2.

  Luis