[Xen-devel] [RFC for-4.8 v2 0/7] xen/arm: Add support for mapping mmio-sram nodes into dom0

["Edgar E. Iglesias" <edgar.iglesias@xxxxxxxxx>]

From: "Edgar E. Iglesias" <edgar.iglesias@xxxxxxxxxx>

This series adds support for mapping mmio-sram nodes into dom0
as normal uncached MEMORY with RWX perms.

If the no-memory-wc prop is present, we create DEVICE RW mappings.

Patch 6 is a bit of a hack to avoid remapping the mmio-sram
sub-area nodes. These nodes represent allocations within the
sram and not mappings that Xen should create.

Comments welcome!

Best regards,
Edgar

ChangeLog:

v1 -> v2
* Replace the .map method with a list of match -> map attributes
* Handle no-memory-wc by mapping as DEVICE RW
* Generalize map_regions_rw_cache instead of adding new functions

Edgar E. Iglesias (7):
  xen/arm: Add MATTR_MEM_NC for normal non-cacheable memory
  xen/arm: Rename and generalize un/map_regions_rw_cache
  xen/device-tree: Add __DT_MATCH macros without braces
  xen/device-tree: Make dt_match_node match props
  xen/arm: domain_build: Plumb for different mapping attributes
  xen/device-tree: Add an mmio-sram bus
  xen/arm: Map mmio-sram nodes as normal un-cached rwx memory

 xen/arch/arm/domain_build.c   | 112 +++++++++++++++++++++++++++++++++---------
 xen/arch/arm/p2m.c            |  29 ++++++-----
 xen/common/device_tree.c      |  46 ++++++++++++++++-
 xen/include/asm-arm/p2m.h     |  22 +++++----
 xen/include/asm-arm/page.h    |   1 +
 xen/include/xen/device_tree.h |  16 ++++--
 6 files changed, 177 insertions(+), 49 deletions(-)

-- 
2.5.0


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