[PATCH v3 0/8] ARM: NOMMU: MPU updates

Gentle ping...

On 09/10/17 10:20, Vladimir Murzin wrote:

Russell, do you have concerns on this series?

Thanks
Vladimir

On 25/09/17 10:05, Vladimir Murzin wrote:

quoted

Hi,

This is an update of the existent MPU code which consist set of
clean-ups and enhancements. The most significant changes are in the
way how MPU settings sync-up for secondaries (PATCH 3/8), more
flexible layout for memory (PATCH 7/8) and support for XIP (PATCH
8/8). Since there is no in-tree user of MPU, support for M-class has
been added (PATCH 6/8).

There is also practical benefit of patch set:

"These MPU patches introduce a nice feature that it simplifies the
bootloader: do not need to setup the MPU, for example for coherent DMA
region, which is described in device-tree too." Andr?s Szemz?

Changelog:
           v2 -> v3
              - fixed support for XIP (PATCH 8/8)
	      - rebased on 4.14-rc2

           v1 -> v2
              - support for XIP (PATCH 8/8)
	      - rebased on 4.13-rc1

        RFC v2 -> v1
               - dropped RFC tag
	       - Tested-by from Andr?s
	       - rebased on 4.12-rc5

           RFC -> RFC v2
	       - fixed MPU enable for v7m (PATCH 6/7)

Thanks!

Vladimir Murzin (8):
  ARM: NOMMU: Move out MPU setup in separate module
  ARM: NOMMU: Update MPU accessors to use cp15 helpers
  ARM: NOMMU: Rework MPU to be mostly done in C
  ARM: NOMMU: Disallow MPU for XIP
  ARM: Kconfig: Kill CONFIG_VECTORS_BASE
  ARM: V7M: Add support for MPU to M-class
  ARM: NOMMU: Use more MPU regions to cover memory
  ARM: NOMMU: Support MPU in XIP configuration

 arch/arm/Kconfig                  |   9 -
 arch/arm/Kconfig-nommu            |   4 +-
 arch/arm/include/asm/cputype.h    |  10 +
 arch/arm/include/asm/mpu.h        |  26 +-
 arch/arm/include/asm/smp.h        |   2 +-
 arch/arm/include/asm/v7m.h        |  10 +
 arch/arm/kernel/asm-offsets.c     |  11 +
 arch/arm/kernel/head-nommu.S      | 148 +++++++++---
 arch/arm/kernel/smp.c             |   2 +-
 arch/arm/kernel/vmlinux-xip.lds.S |  23 ++
 arch/arm/mm/Makefile              |   1 +
 arch/arm/mm/nommu.c               | 254 +-------------------
 arch/arm/mm/pmsa-v7.c             | 484 ++++++++++++++++++++++++++++++++++++++
 13 files changed, 682 insertions(+), 302 deletions(-)
 create mode 100644 arch/arm/mm/pmsa-v7.c

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