[PATCH v2 0/7] xen/page_alloc: Add NUMA-node specific memory claims

[Bernhard Kaindl <bernhard.kaindl@cloud.com>]

Xen supports claiming an amount of memory ahead of allocating it to
ensure that the memory for the domain is available for allocation.

On NUMA hosts, the same assurance is needed on a per-NUMA-node basis
to ensure optimal placement of domain memory on the correct NUMA node:

Add per-NUMA-node claims and add a new Hypercall to claim memory for
a domain using XEN_DOMCTL_claim_memory and xc_domain_claim_memory().

As we will implement multi-node claims as well, we updated the design
to be flexible for multi-node claims, so that a 2nd series can build
upon it without changing the hypercall API.

Bernhard Kaindl (6):
  xen/page_alloc: Simplify domain_adjust_tot_pages for future changes
  xen: New API to claim memory for a domain using XEN_DOMCTL_claim_memory

Alejandro Vallejo (1):
  xen/page_alloc: Remove `claim` from domain_set_outstanding_pages()

Alejandro Vallejo and Bernhard Kaindl (5):
  xen/page_alloc: Add static per-NUMA-node counts of free pages
  xen: Add node argument to
    domain_{adjust_tot_pages,set_outstanding_pages}()
  xen/page_alloc.c: Create per-node outstanding claims
  xen/page_alloc: Check per-node claims in alloc_heap_pages()

 tools/flask/policy/modules/dom0.te  |   1 +
 tools/flask/policy/modules/xen.if   |   1 +
 tools/include/xenctrl.h             |   4 +
 tools/libs/ctrl/xc_domain.c         |  42 ++++++++
 tools/ocaml/libs/xc/xenctrl.ml      |   9 ++
 tools/ocaml/libs/xc/xenctrl.mli     |   9 ++
 tools/ocaml/libs/xc/xenctrl_stubs.c |  21 ++++
 xen/arch/x86/mm.c                   |   3 +-
 xen/arch/x86/mm/mem_sharing.c       |   4 +-
 xen/common/domain.c                 |  32 +++++-
 xen/common/domctl.c                 |   8 ++
 xen/common/grant_table.c            |   4 +-
 xen/common/memory.c                 |   6 +-
 xen/common/page_alloc.c             | 154 ++++++++++++++++++++++------
 xen/include/public/domctl.h         |  17 +++
 xen/include/xen/domain.h            |   2 +
 xen/include/xen/mm.h                |   6 +-
 xen/include/xen/sched.h             |   1 +
 xen/xsm/flask/hooks.c               |   3 +
 xen/xsm/flask/policy/access_vectors |   2 +
 20 files changed, 285 insertions(+), 44 deletions(-)

-- 
2.43.0