[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Qemu-devel] [PATCH RFC V4 0/4] Implement GIC-500 from GICv3 family for

From: Shlomo Pongratz
Subject: [Qemu-devel] [PATCH RFC V4 0/4] Implement GIC-500 from GICv3 family for arm64
Date: Thu, 17 Sep 2015 20:38:12 +0300

From: Shlomo Pongratz <address@hidden>

This patch is a first step toward 128 cores support for arm64.

At first only 64 cores are supported.
This is because largest integer type has the size of 64 bits and modifying
essential data structures in order to support 128 cores will require
the usage of bitops.

Things left to do:

Support SPI, note that this patch porpose is to enable running 64 cores using
the "virt" virtual machine.

Add support for 128 cores. This requires the usage
of bitops which requires a major rewrite.

Special thanks to Peter Crostwaite whose patch to th Linux (kernel) i.e.
Implement cpu_relax as yield solved the problem of the boot process getting
stuck for 24 cores and more.

  - Rebase the patch series on Pavel Feding's "vGICv3 support" V14 patch series.
  - Replace the usage of vnic/irqchip in the CPU structure to keep the gic
    object for the system instructions with the usage of the routine
    define_arm_cp_regs_with_opaque() as suggested by Peter Maydell in his mail
    from August the 3rd. 

  - Replace my original 1 & 4 patches with Pavel's patches.
  - Add groups support to complies with new GICv2 addtions
  - Cosmetic changes.

  - Split the original patch to 4 patches
  - Add SRE API to the GIC code.
  - Add call to gicv3_update to armv8_gicv3_set_priority_mask.
  - Cosmetic changes.
  - Fix number of irq when reading GICD_TYPER.

Pavel Fedin (1):
  Add virt-v3 machine that uses GIC-500

Shlomo Pongratz (3):
  hw/intc: Implement GIC-500 support files
  hw/intc: Implment GIC-500
  target-arm/cpu64 GICv3 system instructions support

 hw/arm/virt.c                      |   72 +-
 hw/intc/Makefile.objs              |    1 +
 hw/intc/arm_gicv3.c                | 2044 ++++++++++++++++++++++++++++++++++++
 hw/intc/arm_gicv3_common.c         |  120 ++-
 hw/intc/gicv3_internal.h           |  161 +++
 include/hw/arm/fdt.h               |    2 +
 include/hw/arm/virt.h              |    1 +
 include/hw/intc/arm_gicv3.h        |   44 +
 include/hw/intc/arm_gicv3_common.h |   56 +-
 target-arm/cpu-qom.h               |    1 +
 target-arm/cpu.h                   |   12 +
 target-arm/cpu64.c                 |  118 +++
 target-arm/machine.c               |    7 +-
 13 files changed, 2627 insertions(+), 12 deletions(-)
 create mode 100644 hw/intc/arm_gicv3.c
 create mode 100644 hw/intc/gicv3_internal.h
 create mode 100644 include/hw/intc/arm_gicv3.h


reply via email to

[Prev in Thread] Current Thread [Next in Thread]