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[Xen-devel] [PATCH V2 0/8] Support more than 8 vcpus on arm64 with GICv3

From: Chen Baozi <baozich@xxxxxxxxx>

[Sorry for the incorrect list address previously.]

Currently the number of vcpus on arm64 with GICv3 is limited up to 8 due
to the fixed size of redistributor mmio region. Increasing the size
makes the number expand to 16 because of AFF0 restriction on GICv3.
To create a guest up to 128 vCPUs, which is the maxium number that GIC-500
can support, this patchset uses the AFF1 information to create a mapping
relation between vCPUID and vMPIDR and deals with the related issues.

These patches are written based upon Julien's "GICv2 on GICv3" series.

Changes from V1:
* Use the way that expanding the GICR address space to support up to 128
  redistributor in guest memory layout rather than use the dynamic
* Add support to include AFF1 information in vMPIDR/logical CPUID.

Chen Baozi (8):
  xen/arm64: increase MAX_VIRT_CPUS to 128 on arm64
  xen/arm: gic-v3: Increase the size of GICR in address space for guest
  xen/arm: Add funtions of mapping between vCPUID and vMPIDR
  xen/arm: Use the new mapping relations between vCPUID and vMPIDR
  xen/arm: vGIC: Consider AFF1 when injecting SGI.
  tools/libxl: Make DT node of GICv3 according to max_vcpus
  tools/libxl: Set logical CPUID in DT node equal to MPIDR for domU
  xen/arm: Set logical CPUID in DT node for dom0 the same as MPIDR

 tools/libxl/libxl_arm.c       | 17 ++++++++++++-----
 xen/arch/arm/domain.c         |  6 +-----
 xen/arch/arm/domain_build.c   | 11 ++++++++---
 xen/arch/arm/vgic-v3.c        | 24 ++++++++----------------
 xen/arch/arm/vgic.c           | 10 ++++++++--
 xen/arch/arm/vpsci.c          |  2 +-
 xen/include/asm-arm/config.h  |  4 ++++
 xen/include/asm-arm/domain.h  | 34 ++++++++++++++++++++++++++++++++++
 xen/include/public/arch-arm.h |  4 ++--
 9 files changed, 78 insertions(+), 34 deletions(-)


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