[PATCH v4 00/20] arm64: GICv3 support
Abel
wuyun.wu at huawei.com
Tue Jun 10 18:49:40 PDT 2014
Hi Marc,
Add:
Reviewed-by: Yun Wu <wuyun.wu at huawei.com>
Acked-by: Zhen Lei <thunder.leizhen at huawei.com>
for the first 4 patches, that is:
> ARM: GIC: move some bits of GICv2 to a library-type file
> arm64: initial support for GICv3
> arm64: GICv3 device tree binding documentation
> arm64: boot protocol documentation update for GICv3
Cheers,
Abel.
On 2014/5/16 1:58, Marc Zyngier wrote:
> 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 (instead of the memory
> mapped 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 (WIP):
> - LPI/ITS/MSI
> - KVM GICv3 guest support
> - 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 and Foundation models, with non-regressions run on a VExpress
> TC-2 and another Cortex-A57 based platform.
>
> So far, the level of reviewing has been embarassingly low (my sincere
> thanks to Christoffer and Will for being the only ones to review
> it). While the documentation is unfortunately not public yet, it is
> available to those actively implementing GICv3 in their hardware, and
> I'm really eager to see reviews and test reports.
>
> Without that kind of engagement, it is unlikely that this code will
> get merged any time soon.
>
> Individuals without access to documentation and/or hardware can still
> review the code (it shares a lot of concepts with GICv2) and test in
> on the freely available Foundation model (see
> http://releases.linaro.org/latest/openembedded/aarch64/ for details on
> how to use the Foundation model).
>
> The code is also available at the following location (warning,
> unstable branch!):
> git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git kvm-arm64/gicv3
>
> * From v3 [3]
> - Fixed a lot of issues found by Christoffer (too many to report
> here, see the email thread)
> - New .sync_lr_elrsr backend
> - New probing method
> - New irqchip_in_kernel implementation
> - Checked full bisectability of the series (hopefully got it right
> this time...)
> - rebased on top of 3.15-rc5
>
> * From v2 [2]
> - removed sharing of the xlate method with GICv2 (TI crossbar is now
> getting in the way...)
> - Switched to a tree domain to accomodate for the LPI space
> - Fixed more bisectability
>
> * From the initial revision [1]
> - Some code sharing with GICv2
> - Barrier cleanup/clarification
> - Revised boot protocol update
> - Consistent use of the MPIDR access macros
> - Fixed a number of embarassing bugs
> - Fixed DT examples
> - Fixed bisectability of the series
>
> [1]: http://lists.infradead.org/pipermail/linux-arm-kernel/2014-February/229959.html
> [2]: http://lists.infradead.org/pipermail/linux-arm-kernel/2014-March/241972.html
> [3]: http://lists.infradead.org/pipermail/linux-arm-kernel/2014-April/248008.html
>
> Marc Zyngier (20):
> ARM: GIC: move some bits of GICv2 to a library-type file
> 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
> KVM: ARM: vgic: revisit implementation of irqchip_in_kernel
> 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.{IMO,FMO} manipulation into the vgic switch
> code
> KVM: ARM: vgic: add the GICv3 backend
> arm64: KVM: vgic: add GICv3 world switch
>
> Documentation/arm64/booting.txt | 6 +
> Documentation/devicetree/bindings/arm/gic-v3.txt | 79 +++
> 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_arm.h | 5 +-
> arch/arm64/include/asm/kvm_asm.h | 14 +-
> arch/arm64/include/asm/kvm_host.h | 28 +
> arch/arm64/include/asm/virt.h | 4 +
> arch/arm64/kernel/asm-offsets.c | 25 +-
> arch/arm64/kernel/head.S | 18 +
> arch/arm64/kernel/hyp-stub.S | 1 +
> arch/arm64/kvm/Makefile | 4 +
> arch/arm64/kvm/hyp.S | 127 +----
> arch/arm64/kvm/vgic-v2-switch.S | 133 +++++
> arch/arm64/kvm/vgic-v3-switch.S | 271 +++++++++
> drivers/irqchip/Kconfig | 5 +
> drivers/irqchip/Makefile | 3 +-
> drivers/irqchip/irq-gic-common.c | 115 ++++
> drivers/irqchip/irq-gic-common.h | 29 +
> drivers/irqchip/irq-gic-v3.c | 684 +++++++++++++++++++++++
> drivers/irqchip/irq-gic.c | 59 +-
> include/kvm/arm_vgic.h | 115 +++-
> include/linux/irqchip/arm-gic-v3.h | 190 +++++++
> virt/kvm/arm/vgic-v2.c | 236 ++++++++
> virt/kvm/arm/vgic-v3.c | 225 ++++++++
> virt/kvm/arm/vgic.c | 345 ++++++------
> 29 files changed, 2415 insertions(+), 353 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-common.c
> create mode 100644 drivers/irqchip/irq-gic-common.h
> 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
>
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