[PATCH v2 00/26] Introduce enablemenant of dom0less

[Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>]

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.

This patch series is based on [1], but a lot of patch could go even without
it.

[1] 
https://lore.kernel.org/xen-devel/cover.1778140240.git.oleksii.kurochko@xxxxxxxxx/T/#t

CI tests: https://gitlab.com/xen-project/people/olkur/xen/-/pipelines/2510638764

---
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 (26):
  xen: arm: update p2m_set_allocation() prototype
  xen/riscv: Implement ARCH_PAGING_MEMPOOL
  xen/riscv: Implement construct_domain()
  xen/riscv: implement prerequisites for domain_create()
  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: add basic VGEIN management for AIA guests
  xen/riscv: introduce per-vCPU IMSIC state
  xen/riscv: add very early virtual APLIC (vAPLIC) initialization
    support
  xen/riscv: introduce (de)initialization helpers for vINTC
  xen/riscv: create APLIC DT node for guest domains
  xen/riscv: generate IMSIC DT node for guest domains
  xen: move declaration of map_device_irqs_to_domain() to common header
  xen/riscv: implement IRQ routing for device passthrough
  xen/riscv: add missing APLIC register offsets, masks to asm/aplic.h.
  xen/riscv: implement virtual APLIC MMIO emulation
  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/riscv: manage IRQ_DISABLED flag in APLIC irq enable/disable
    callbacks

 automation/gitlab-ci/build.yaml           |   1 +
 xen/arch/arm/include/asm/p2m.h            |   1 -
 xen/arch/arm/include/asm/setup.h          |   3 -
 xen/arch/arm/mmu/p2m.c                    |  22 +-
 xen/arch/riscv/Kconfig                    |   3 +
 xen/arch/riscv/Makefile                   |   4 +
 xen/arch/riscv/aia.c                      | 167 +++++++++
 xen/arch/riscv/aplic.c                    |  49 ++-
 xen/arch/riscv/cpufeature.c               |  59 ++-
 xen/arch/riscv/device.c                   | 108 ++++++
 xen/arch/riscv/dom0less-build.c           |  39 ++
 xen/arch/riscv/domain-build.c             | 179 +++++++++
 xen/arch/riscv/domain.c                   |  44 ++-
 xen/arch/riscv/imsic.c                    | 167 +++++++++
 xen/arch/riscv/include/asm/aia.h          |  18 +
 xen/arch/riscv/include/asm/aplic.h        |  53 +++
 xen/arch/riscv/include/asm/cpufeature.h   |   5 +
 xen/arch/riscv/include/asm/domain.h       |   8 +
 xen/arch/riscv/include/asm/guest-layout.h |   7 +
 xen/arch/riscv/include/asm/imsic.h        |  26 ++
 xen/arch/riscv/include/asm/intc.h         |  58 ++-
 xen/arch/riscv/include/asm/irq.h          |   3 +
 xen/arch/riscv/include/asm/paging.h       |   2 +-
 xen/arch/riscv/include/asm/setup.h        |   8 +-
 xen/arch/riscv/include/asm/vaplic.h       |  37 ++
 xen/arch/riscv/intc.c                     | 103 ++++-
 xen/arch/riscv/irq.c                      | 178 ++++++++-
 xen/arch/riscv/p2m.c                      |  31 +-
 xen/arch/riscv/paging.c                   |   7 +-
 xen/arch/riscv/setup.c                    |  14 +
 xen/arch/riscv/stubs.c                    |  12 -
 xen/arch/riscv/vaplic.c                   | 436 ++++++++++++++++++++++
 xen/common/device-tree/dom0less-build.c   |   2 +-
 xen/include/xen/fdt-domain-build.h        |  13 +
 xen/include/xen/p2m-common.h              |   2 +
 35 files changed, 1807 insertions(+), 62 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

-- 
2.54.0