This patchset adds necessary userspace API in order to support vGICv3 live
migration. GICv3 registers are accessed using device attribute ioctls,
similar to GICv2.
Whoever wants to test it, please note that this version is not
binary-compatible with previous one, the API has been seriously changed.
qemu patchess will be posted in some time.
v4 => v5:
- Adapted to new API by Peter Maydell, Marc Zyngier and Christoffer Dall.
Acked-by's on the documentation were dropped, just in case, because i
slightly adjusted it. Additionally, i merged all doc updates into one
patch.
v3 => v4:
- Split pure refactoring from anything else
- Documentation brought up to date
- Cleaned up 'mmio' structure usage in vgic_attr_regs_access(),
use call_range_handler() for 64-bit access handling
- Rebased on new linux-next
v2 => v3:
- KVM_DEV_ARM_VGIC_CPUID_MASK enlarged to 20 bits, allowing more than 256
CPUs.
- Bug fix: Correctly set mmio->private, necessary for redistributor access.
- Added accessors for ICC_AP0R and ICC_AP1R registers
- Rebased on new linux-next
v1 => v2:
- Do not use generic register get/set API for CPU interface, use only
device attributes.
- Introduce size specifier for distributor and redistributor register
accesses, do not assume size any more.
- Lots of refactor and reusable code extraction.
- Added forgotten documentation
Christoffer Dall (1):
KVM: arm/arm64: Update API documentation
Pavel Fedin (6):
KVM: arm/arm64: Move endianess conversion out of
vgic_attr_regs_access()
KVM: arm/arm64: Refactor vGIC attributes handling code
KVM: arm64: Implement vGICv3 distributor and redistributor access from
userspace
KVM: arm64: Refactor system register handlers
KVM: arm64: Introduce find_reg_by_id()
KVM: arm64: Implement vGICv3 CPU interface access
Documentation/virtual/kvm/devices/arm-vgic-v3.txt | 117 ++++++++
Documentation/virtual/kvm/devices/arm-vgic.txt | 41 +--
arch/arm64/include/uapi/asm/kvm.h | 17 +-
arch/arm64/kvm/sys_regs.c | 83 +++---
arch/arm64/kvm/sys_regs.h | 8 +-
arch/arm64/kvm/sys_regs_generic_v8.c | 2 +-
include/linux/irqchip/arm-gic-v3.h | 19 +-
virt/kvm/arm/vgic-v2-emul.c | 124 ++------
virt/kvm/arm/vgic-v3-emul.c | 343 +++++++++++++++++++++-
virt/kvm/arm/vgic.c | 57 ++++
virt/kvm/arm/vgic.h | 3 +
11 files changed, 630 insertions(+), 184 deletions(-)
create mode 100644 Documentation/virtual/kvm/devices/arm-vgic-v3.txt
--
2.4.4
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