This patchset adds necessary userspace API in order to support vGICv3 live
migration. GICv3 registers are accessed using device attribute ioctls,
similar to GICv2.
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
Pavel Fedin (7):
KVM: arm/arm64: Move endianness conversion out of
vgic_attr_regs_access()
KVM: arm/arm64: Refactor vGIC attributes handling code
KVM: arm/arm64: Fix the documentation
KVM: arm64: Implement vGICv3 distributor and redistributor access from
userspace
KVM: arm64: Refactor system register handlers
KVM: arm64: Introduce find_reg_by_id()
Implement vGICv3 CPU interface access
Documentation/virtual/kvm/devices/arm-vgic.txt | 90 ++++++-
arch/arm64/include/uapi/asm/kvm.h | 11 +-
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 | 18 +-
virt/kvm/arm/vgic-v2-emul.c | 122 ++-------
virt/kvm/arm/vgic-v3-emul.c | 338 ++++++++++++++++++++++++-
virt/kvm/arm/vgic.c | 65 +++++
virt/kvm/arm/vgic.h | 4 +
10 files changed, 571 insertions(+), 170 deletions(-)
--
2.4.4
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