[v2,0/7] Early Boot Allocation on Power

Message

Shawn Anastasio Dec. 15, 2023, 2:43 a.m. UTC

Hello all,

This series enables the Xen boot time allocator on Power by parsing
the available memory regions from the firmware-provided device tree.

As suggested during review of v1, this is now accomplished by moving
Arm's bootfdt.c into xen/common, along with a few modifications to
adapt it to Power -- namely to tolerate a device tree with no memory
reserve map entries and to tolerate an FDT that overlaps with the a
reserved memory region.

Additionally, the final patch of the series updates the radix mmu
code to use the newly-enabled boot allocator for the Partition and
Process tables, instead of statically allocating them like was
previously done. Among other things, switching to run-time allocation
allows us to allocate a full-sized Process Table instead of the
minimal one that was previously used to keep the Xen binary size small.

Thanks,
Shawn

Shawn Anastasio (7):
  xen/asm-generic: Introduce generic static-shmem.h
  xen/asm-generic: Introduce generic setup.h
  xen/common: Move Arm's bootfdt to common
  xen/device-tree: Fix bootfdt.c to tolerate 0 reserved regions
  xen/ppc: Enable bootfdt and boot allocator
  xen/ppc: mm-radix: Replace debug printing code with printk
  xen/ppc: mm-radix: Allocate Partition and Process Tables at runtime

 xen/arch/arm/Makefile                         |   1 -
 xen/arch/ppc/include/asm/Makefile             |   1 +
 xen/arch/ppc/include/asm/setup.h              | 117 +++++++
 xen/arch/ppc/mm-radix.c                       | 199 ++++++------
 xen/arch/ppc/setup.c                          | 289 +++++++++++++++++-
 xen/common/Makefile                           |   1 +
 xen/common/device-tree/Makefile               |   1 +
 .../arm => common/device-tree}/bootfdt.c      |  45 ++-
 xen/include/asm-generic/setup.h               | 148 +++++++++
 xen/include/asm-generic/static-shmem.h        |  12 +
 10 files changed, 698 insertions(+), 116 deletions(-)
 create mode 100644 xen/common/device-tree/Makefile
 rename xen/{arch/arm => common/device-tree}/bootfdt.c (93%)
 create mode 100644 xen/include/asm-generic/setup.h
 create mode 100644 xen/include/asm-generic/static-shmem.h

--
2.30.2