[PATCH v4] ARM: early fixmap support for earlycon

Russell King - ARM Linux linux at arm.linux.org.uk
Wed Jun 17 12:43:29 PDT 2015

On Wed, Jun 17, 2015 at 01:43:17PM +0200, Stefan Agner wrote:
> On 2015-06-17 00:32, Russell King - ARM Linux wrote:
> > On Tue, Jun 16, 2015 at 11:51:47PM +0200, Stefan Agner wrote:
> >> Add early fixmap support, initially to support permanent, fixed
> >> mapping support for early console. A temporary, early pte is
> >> created which is migrated to a permanent mapping in paging_init.
> >> This is also needed since the attributes may change as the memory
> >> types are initialized. The 3MiB range of fixmap spans two pte
> >> tables, but currently only one pte is created for early fixmap
> >> support.
> >>
> >> Re-add FIX_KMAP_BEGIN to the index calculation in highmem.c since
> >> the index for kmap does not start at zero anymore. This reverts
> >> 4221e2e6b316 ("ARM: 8031/1: fixmap: remove FIX_KMAP_BEGIN and
> >> FIX_KMAP_END") to some extent.
> > 
> > Sorry, this isn't going to make the next merge window, I've closed my
> > tree at the end of last week to new submissions (because it got too
> > painful to maintain the for-next branch due to the number of cross-
> > dependencies between branches.)  The only patches I'll entertain this
> > week and throughout the merge window are bug fixes.
> Ok no problem, I guess it's anyway a good idea to add it early in the
> development cycle so the change gets a bit more testing coverage. Shall
> I rebase the patch just after the merge window and send it out again or
> add the patch in its current state to your patch tracker?

Please rebase (if necessary) on -rc1 and send to the patch tracker if
there are no significant changes to it (I doubt there will be.)  If
everything during the merge window works as it should, -rc1 should
basically be the contents of linux-next just before the merge window
opens, plus any fixes that are needed along the way.

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