[v5,00/11] Follow-up static shared memory PART I

Message

Penny Zheng Dec. 6, 2023, 9:06 a.m. UTC

There are some unsolving issues on current 4.18 static shared memory
feature[1], including:
- In order to avoid keeping growing 'membank', having the shared memory
info in separate structures is preferred.
- Missing implementation on having the host address optional in
"xen,shared-mem" property
- Removing static shared memory from extended regions
- Missing reference release on foreign superpage
- Fix duplicated /reserved-memory node on Dom0
- Missing static shm node declaration on guest /memory node
- Missing "xen,offset" feature, which is introduced in Linux DOC[2]

All above objects have been divided into two parts to complete. And this
patch serie is PART I.

[1] https://lore.kernel.org/all/[e-mail]/
[2] https://www.kernel.org/doc/Documentation/devicetree/bindings/reserved-memory/xen%2Cshared-memory.txt

Penny Zheng (11):
  xen/arm: remove stale addr_cells/size_cells in assign_shared_memory
  xen/arm: avoid repetitive checking in process_shm_node
  xen/arm: re-define a set of data structures for static shared memory
    region
  xen/arm: introduce allocate_domheap_memory and guest_physmap_memory
  xen/arm: use paddr_assigned to indicate whether host address is
    provided
  xen/arm: support static shared memory when host address not provided
  xen/arm: remove shm holes for extended regions
  xen/p2m: put reference for superpage
  xen/docs: refine docs about static shared memory
  xen/arm: fix duplicate /reserved-memory node in Dom0
  xen/arm: create another /memory node for static shm

 docs/misc/arm/device-tree/booting.txt   |  52 +-
 xen/arch/arm/dom0less-build.c           |  11 +-
 xen/arch/arm/domain_build.c             | 177 +++++-
 xen/arch/arm/include/asm/domain_build.h |   7 +
 xen/arch/arm/include/asm/kernel.h       |  11 +-
 xen/arch/arm/include/asm/setup.h        |  69 ++-
 xen/arch/arm/include/asm/static-shmem.h |  48 +-
 xen/arch/arm/mmu/p2m.c                  |  58 +-
 xen/arch/arm/static-shmem.c             | 742 ++++++++++++++++++------
 9 files changed, 929 insertions(+), 246 deletions(-)