[PATCH 2/2] arm64: Mark kernel page ranges contiguous

On Fri, Feb 12, 2016 at 12:09:41PM -0600, Jeremy Linton wrote:

On 02/12/2016 11:58 AM, Mark Rutland wrote:

(trimming)

quoted

All create_mapping_late() calls should be performed with the same
physical/virtual start/end as earlier "chunk" mappings, and thus should
never result in a fuse/split or translation change -- only permission
changes (which we believe do not result in TLB conflicts, or we'd need
to do far more work to fix those up).

If we split/fuse in any case other than EFI runtime table creation, that
is a bug that we need to fix. If you're seeing a case we do that, then
please let me know!

We are saying the same thing, and right now the biggest violator is
probably the .rodata patch I just posted!

Ok, phew!

The simple fix is to make .text and .rodata separate "chunks", then it
all falls out in the wash.

Mark.