[PATCH v2 0/8] ARM: V7M: Support caches

Vladimir Murzin vladimir.murzin at arm.com
Tue Aug 30 01:26:11 PDT 2016

Hi Joachim,

On 27/08/16 17:53, Joachim Eastwood wrote:
> Hi Vladimir,
> On 18 August 2016 at 16:57, Vladimir Murzin <vladimir.murzin at arm.com> wrote:
>> On 18/08/16 15:53, Russell King - ARM Linux wrote:
>>> On Thu, Aug 18, 2016 at 01:45:52PM +0100, Vladimir Murzin wrote:
>>>> This patch set allows M-class cpus benefit of optional cache support.
>>>> It originally was written by Jonny, I've been keeping it locally mainly
>>>> rebasing over Linux versions.
>>>> The original idea behind patches was to reuse existing cache handling
>>>> code from v7A/R with help of extra macros to factor out cache handling
>>>> logic (v7M cache operations are provided via memory mapped interface
>>>> rather than co-processor instructions).
>>>> However, that idea was rejected and starting form this (v2) version
>>>> V7M cache logic lives into file and macros to indirect memory-mapped
>>>> operations stay there locally since they make it easier to follow the
>>>> code.
>>>> Along with the v7M cache support the first user (Cortex-M7) is
>>>> introduced.
>>>> Patches were tested on MPS2 platform with Cortex-M3/M4/M7. The later
>>>> one showed significant boot speed-up.
>>> >From a quick read through, the approach looks sane, and I think I'm
>>> now happy with these.
>> Thanks!
>> Is it acceptable if patches hang on a list for awhile, so people (I'm
>> looking at Alex and  Szemző) can test them?
> These patches doesn't seem to break anything on the cache-less
> Cortex-M4 NXP LPC4357.


> So FWIW:
> Tested-by: Joachim Eastwood <manabian at gmail.com>

Thanks a lot for testing!


> regards,
> Joachim Eastwood

More information about the linux-arm-kernel mailing list