Re: [Xen-devel] [PATCH for-4.5 v12 0/3] Refactoring for future mem_event and mem_access support on ARM

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Mon, 2014-09-29 at 17:55 +0200, Tamas K Lengyel wrote:
> These patches are the refactoring and minor patches that will be required
> for future mem_access support on ARM that could be merged now.

Needs a release exception.

Konrad,

We'd like to get some of these into 4.5 so as to ease life for people
who want to backport ARM xenaccess and/or continue developing it for
4.6.

I'm in favour of only "xen/xsm: Wrap mem_access blocks into
HAS_MEM_ACCESS ifdefs" and "xen/arm: Add p2m_set_permission and
p2m_shatter_page helpers." for now IMO, the new hypercall can/should
wait and come along with the user in 4.6.

Those two patches are a slight refactoring and a refactoring+ifdeffing
(refactorings/movements painful to rebase without introducing errors).
IMHO if they build then the risk of other regressions is slight.

Ian.

> 
> This PATCH series is also available at:
> https://github.com/tklengyel/xen/tree/arm_memaccess_12-for-4.5
> 
> Julien Grall (1):
>   xen/arm: Implement domain_get_maximum_gpfn
> 
> Tamas K Lengyel (2):
>   xen/xsm: Wrap mem_access blocks into HAS_MEM_ACCESS ifdefs
>   xen/arm: Add p2m_set_permission and p2m_shatter_page helpers.
> 
>  xen/arch/arm/mm.c       |   2 +-
>  xen/arch/arm/p2m.c      | 137 
> +++++++++++++++++++++++++++++++++---------------
>  xen/include/xsm/dummy.h |  26 ++++-----
>  xen/include/xsm/xsm.h   |  29 +++++-----
>  xen/xsm/dummy.c         |   7 ++-
>  xen/xsm/flask/hooks.c   |  33 +++++++-----
>  6 files changed, 151 insertions(+), 83 deletions(-)
> 



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