[Qemu-devel] [RFC v5 0/8] QEMU: Support KVM on ARM

[Peter Maydell]

Round 5 of the QEMU patches to support KVM for
ARM on Cortex-A15 hardware. It's intended for use with
the kernel tree at
 git://github.com/virtualopensystems/linux-kvm-arm.git kvm-arm-v17-vgic-timers

Still RFC pending the kernel patches actually being accepted
upstream...

Changes v4 to v5:
 * no changes of consequence, but rebased on current qemu master
   and resynced with v17 of the kernel patches (minor ABI changes
   caused by other people getting in first for ioctl numbers etc,
   and insertion of "_ARM_" in KVM_ARM_SET_DEVICE_ADDRESS related
   constants
Changes v3 to v4:
 * minor updates to match kernel ABI changes (ID field in
   kvm_device_address is now 64 bits, core register offsets now
   changed due to use of pt_regs struct)
 * squashed the two 'update kernel headers' patches, since the
   plan is for vgic support to go upstream at the same time as
   the baseline kernel patchset
 * added a new patch 8 which adds ARM to the list of Linux archs
   which prefer 2MB alignment so they can use transparent hugepages

Changes v2 to v3:
 * applied various minor tweaks suggested during review of v2
 * rebased on master, resynced with kernel headers for v13
 * new patch 6 which uses a MemoryListener to track where the
   VGIC memory regions are mapped, so we can tell the kernel
   where they live in the memory map (via new ioctl
   KVM_SET_DEVICE_ADDRESS)

Git tree available at
 git://git.linaro.org/people/pmaydell/qemu-arm.git kvm-arm-v17
with pointy-clicky interface at
 
http://git.linaro.org/gitweb?p=people/pmaydell/qemu-arm.git;a=shortlog;h=refs/heads/kvm-arm-v17


Peter Maydell (8):
  oslib-posix: Align to permit transparent hugepages on ARM Linux
  linux-headers: Add ARM KVM headers (not for upstream)
  ARM: KVM: Add support for KVM on ARM architecture
  ARM KVM: save and load VFP registers from kernel
  hw/arm_gic: Add presave/postload hooks
  target-arm: Use MemoryListener to identify GIC base address for KVM
  hw/kvm/arm_gic: Implement support for KVM in-kernel ARM GIC
  configure: Enable KVM on ARM

 configure                            |    2 +-
 hw/a15mpcore.c                       |    8 +-
 hw/arm/Makefile.objs                 |    1 +
 hw/arm_gic_common.c                  |   10 +
 hw/arm_gic_internal.h                |    2 +
 hw/arm_pic.c                         |   26 ++
 hw/kvm/arm_gic.c                     |  169 ++++++++++++
 linux-headers/asm-arm/kvm.h          |  180 +++++++++++++
 linux-headers/asm-arm/kvm_para.h     |    1 +
 linux-headers/asm-generic/kvm_para.h |    4 +
 linux-headers/linux/kvm.h            |   17 ++
 target-arm/Makefile.objs             |    1 +
 target-arm/cpu.h                     |    1 +
 target-arm/helper.c                  |    2 +-
 target-arm/kvm.c                     |  487 ++++++++++++++++++++++++++++++++++
 target-arm/kvm_arm.h                 |   32 +++
 util/oslib-posix.c                   |    2 +-
 17 files changed, 941 insertions(+), 4 deletions(-)
 create mode 100644 hw/kvm/arm_gic.c
 create mode 100644 linux-headers/asm-arm/kvm.h
 create mode 100644 linux-headers/asm-arm/kvm_para.h
 create mode 100644 linux-headers/asm-generic/kvm_para.h
 create mode 100644 target-arm/kvm.c
 create mode 100644 target-arm/kvm_arm.h

-- 
1.7.9.5