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

[Vladimir Murzin]

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:
>> 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." András Szemző
>>
>> 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 András
>> 	       - 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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