GICv3 is the base for a new generation of interrupt controllers
designed to overcome some of the most glaring limitations of GICv2.
Some of the features are:
- Support for more than 8 CPUs (a lot more...)
- System registers for CPU interface access (GICC, GICV, GICH)
- Message based interrupts
This patch series currently support:
- Affinity Routing
- System Registers
- Non-Secure Group-1 interrupts only
- KVM support (GICv3 host, GICv2 guest)
What is *not yet* supported in this series:
- LPI/ITS/MSI (patches are available in the below branch,
though still in development)
- KVM GICv3 guest support (requires GICv3 distributor emulation)
- Any form of power management
- 32bit systems
To be built, this code requires a fairly recent compiler/binutils
combo. Linaro 13.06 seems to do the trick. This has been tested on the
ARM FVP model, with non-regressions run on a VExpress TC-2.
The code is also available at the following location:
git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git kvm-arm64/gicv3
Marc Zyngier (18):
arm64: initial support for GICv3
arm64: GICv3 device tree binding documentation
arm64: boot protocol documentation update for GICv3
KVM: arm/arm64: vgic: move GICv2 registers to their own structure
KVM: ARM: vgic: introduce vgic_ops and LR manipulation primitives
KVM: ARM: vgic: abstract access to the ELRSR bitmap
KVM: ARM: vgic: abstract EISR bitmap access
KVM: ARM: vgic: abstract MISR decoding
KVM: ARM: vgic: move underflow handling to vgic_ops
KVM: ARM: vgic: abstract VMCR access
KVM: ARM: vgic: introduce vgic_enable
KVM: ARM: introduce vgic_params structure
KVM: ARM: vgic: split GICv2 backend from the main vgic code
arm64: KVM: remove __kvm_hyp_code_{start,end} from hyp.S
arm64: KVM: split GICv2 world switch from hyp code
arm64: KVM: move hcr_el2 setting into vgic-v2-switch.S
KVM: ARM: vgic: add the GICv3 backend
arm64: KVM: vgic: add GICv3 world switch
Documentation/arm64/booting.txt | 7 +
Documentation/devicetree/bindings/arm/gic-v3.txt | 81 +++
arch/arm/include/asm/kvm_host.h | 5 +
arch/arm/kernel/asm-offsets.c | 14 +-
arch/arm/kvm/Makefile | 1 +
arch/arm/kvm/interrupts_head.S | 26 +-
arch/arm64/Kconfig | 1 +
arch/arm64/include/asm/kvm_asm.h | 18 +-
arch/arm64/include/asm/kvm_host.h | 21 +
arch/arm64/include/asm/virt.h | 4 +
arch/arm64/kernel/asm-offsets.c | 22 +-
arch/arm64/kernel/head.S | 14 +
arch/arm64/kernel/hyp-stub.S | 41 +-
arch/arm64/kvm/Makefile | 4 +
arch/arm64/kvm/hyp.S | 132 +----
arch/arm64/kvm/vgic-v2-switch.S | 149 +++++
arch/arm64/kvm/vgic-v3-switch.S | 275 ++++++++++
drivers/irqchip/Kconfig | 5 +
drivers/irqchip/Makefile | 1 +
drivers/irqchip/irq-gic-v3.c | 665 +++++++++++++++++++++++
include/kvm/arm_vgic.h | 103 +++-
include/linux/irqchip/arm-gic-v3.h | 190 +++++++
virt/kvm/arm/vgic-v2.c | 228 ++++++++
virt/kvm/arm/vgic-v3.c | 220 ++++++++
virt/kvm/arm/vgic.c | 330 ++++++-----
25 files changed, 2238 insertions(+), 319 deletions(-)
create mode 100644 Documentation/devicetree/bindings/arm/gic-v3.txt
create mode 100644 arch/arm64/kvm/vgic-v2-switch.S
create mode 100644 arch/arm64/kvm/vgic-v3-switch.S
create mode 100644 drivers/irqchip/irq-gic-v3.c
create mode 100644 include/linux/irqchip/arm-gic-v3.h
create mode 100644 virt/kvm/arm/vgic-v2.c
create mode 100644 virt/kvm/arm/vgic-v3.c
--
1.8.3.4
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