[PATCH v7 00/20] Introduce enablemenant of dom0less

This patch series reprensent a bunch of patches necessary to enable common part
of Dom0less.
The stuff necessary to start/launch domains will be introduced separately.

CI tests: https://gitlab.com/xen-project/people/olkur/xen/-/pipelines/2729854543

---
Changes in v7:
 - Merged to upstream/staging:
   - xen/riscv: Implement ARCH_PAGING_MEMPOOL
   - xen: arm: update p2m_set_allocation() prototype
   - xen/riscv: do a 4th linking pass if necessary
 - Address the comments from ML.
---
Changes in v6:
 - Merged to upstream/staging:
   - xen: arm: move declaration of map_device_irqs_to_domain() to common header
   - xen/Kconfig: introduce HAS_STATIC_MEMORY
   - xen/riscv: rename enum intc_version to intc_variant
   - xen/riscv: implement prerequisites for domain_create()
 - Move UBSAN fix ("xen: introduce CONFIG_HAS_SHARED_INFO for archs without a shared page")
   to this patch series as it is connected to "xen/Kconfig: introduce HAS_STATIC_MEMORY".
 - Address the comments from ML.
---
Changes in v5:
 - Add new patch (xen/riscv: do a 4th linking pass if necessary) which fixes
   randconfig job issue.
 - Address comments from ML.
---
Changes in v4:
 - Address comments from ML.
---
Changes in v3:
 - Drop dependency from other patch series
   ([1] https://lore.kernel.org/xen-devel/[email protected]/T/#t)
   as it was merged.
 - Reorder patches:
   - move common patches to the start.
   - Move some patches to separate patch series (will be introduced later)
 - Address comments from ML.
---
Changes in v2:
 - Move patch "[PATCH v1 04/27] xen/riscv: rework G-stage mode handling" to
   patch series [1]
 - Address the comments from ML.
 - The following patches were folded into one:
   # xen/riscv: implement init_intc_phandle()
   # xen/riscv: call do_initcalls() in start_xen()
   # xen/riscv: setup system domains
 - The following patch were folded into one:
   # xen/riscv: add vaplic access check
   # xen/riscv: emulate guest writes to virtual APLIC MMIO
   # xen/riscv: emulate guest reads from virtual APLIC MMIO
 - Add new bug fix, not really necessary to this patch series:
   xen/riscv: manage IRQ_DISABLED flag in APLIC irq enable/disable callbacks
---

Oleksii Kurochko (20):
  xen: introduce CONFIG_HAS_SHARED_INFO for archs without a shared page
  xen/dom0less: turn max_init_domid into a common variable
  xen/riscv: Implement construct_domain()
  xen/riscv: introduce guest riscv,isa string
  xen/riscv: implement make_cpus_node()
  xen/riscv: implement make_timer_node()
  xen/riscv: implement make_arch_nodes()
  xen/riscv: introduce init interrupt controller operations
  xen/riscv: implement make_intc_domU_node()
  xen/riscv: introduce aia_init() and aia_usable()
  xen/riscv: introduce per-vCPU IMSIC state
  xen/riscv: introduce minimal virtual APLIC (vAPLIC) infrastructure
  xen/riscv: introduce (de)initialization helpers for vINTC
  xen/riscv: generate IMSIC DT node for guest domains
  xen/riscv: create APLIC DT node for guest domains
  xen/riscv: implement IRQ routing for device passthrough
  xen/riscv: implement init_intc_phandle()
  xen/riscv: initialize RCU, scheduler, and system domains in
    start_xen()
  xen/riscv: provide init_vuart()
  xen/riscv: add initial dom0less infrastructure support

 xen/arch/arm/Kconfig                      |   1 +
 xen/arch/arm/include/asm/setup.h          |   2 -
 xen/arch/arm/setup.c                      |   2 -
 xen/arch/ppc/include/asm/setup.h          |   2 -
 xen/arch/riscv/Kconfig                    |   2 +
 xen/arch/riscv/Makefile                   |   4 +
 xen/arch/riscv/aia.c                      |  23 +++
 xen/arch/riscv/aplic-priv.h               |  13 ++
 xen/arch/riscv/aplic.c                    |  14 +-
 xen/arch/riscv/cpufeature.c               | 171 +++++++++++++---
 xen/arch/riscv/device.c                   |  94 +++++++++
 xen/arch/riscv/dom0less-build.c           |  40 ++++
 xen/arch/riscv/domain-build.c             | 192 ++++++++++++++++++
 xen/arch/riscv/domain.c                   |  16 +-
 xen/arch/riscv/imsic.c                    | 178 ++++++++++++++++-
 xen/arch/riscv/include/asm/aia.h          |  10 +
 xen/arch/riscv/include/asm/aplic.h        |  15 ++
 xen/arch/riscv/include/asm/cpufeature.h   |   5 +
 xen/arch/riscv/include/asm/domain.h       |   7 +
 xen/arch/riscv/include/asm/guest-layout.h |  24 +++
 xen/arch/riscv/include/asm/imsic.h        |  25 +++
 xen/arch/riscv/include/asm/intc.h         |  44 ++++-
 xen/arch/riscv/include/asm/irq.h          |   5 +
 xen/arch/riscv/include/asm/setup.h        |   2 -
 xen/arch/riscv/include/asm/vaplic.h       |  34 ++++
 xen/arch/riscv/intc.c                     | 102 +++++++++-
 xen/arch/riscv/irq.c                      | 226 ++++++++++++++++++++++
 xen/arch/riscv/setup.c                    |  12 ++
 xen/arch/riscv/vaplic.c                   | 148 ++++++++++++++
 xen/arch/x86/Kconfig                      |   1 +
 xen/arch/x86/include/asm/setup.h          |   2 -
 xen/common/Kconfig                        |   3 +
 xen/common/Makefile                       |   2 +-
 xen/common/domain.c                       |   6 +-
 xen/common/domctl.c                       |   4 +
 xen/common/domid.c                        |   5 +
 xen/common/event_channel.c                |  53 ++++-
 xen/common/event_channel.h                |   6 +
 xen/common/event_fifo.c                   |  19 +-
 xen/common/time.c                         |   2 +
 xen/drivers/char/console.c                |   1 +
 xen/include/xen/dom0less-build.h          |   7 +
 xen/include/xen/sched.h                   |   2 +
 xen/include/xen/shared.h                  |   8 +-
 xen/include/xen/time.h                    |   4 +
 45 files changed, 1478 insertions(+), 60 deletions(-)
 create mode 100644 xen/arch/riscv/aia.c
 create mode 100644 xen/arch/riscv/device.c
 create mode 100644 xen/arch/riscv/domain-build.c
 create mode 100644 xen/arch/riscv/include/asm/aia.h
 create mode 100644 xen/arch/riscv/include/asm/vaplic.h
 create mode 100644 xen/arch/riscv/vaplic.c

-- 
2.55.0