[PATCH v3 0/9] KVM: arm64: Initial host support for the Apple M1
This is a new version of the series previously posted at [2], reworking the vGIC and timer code to cope with the M1 braindead^Wamusing nature. Hardly any change this time around, mostly rebased on top of upstream now that the dependencies have made it in. Tested with multiple concurrent VMs running from an initramfs. * From v2: - Rebased on 5.13-rc1 - Fixed a couple of nits in the GIC registration code * From v1 [1]: - Rebased on Hector's v4 posting[0] - Dropped a couple of patches that have been merged in the above series - Fixed irq_ack callback on the timer path [0] https://lore.kernel.org/r/20210402090542.131194-1-mar...@marcan.st [1] https://lore.kernel.org/r/20210316174617.173033-1-...@kernel.org [2] https://lore.kernel.org/r/20210403112931.1043452-1-...@kernel.org Marc Zyngier (9): irqchip/gic: Split vGIC probing information from the GIC code KVM: arm64: Handle physical FIQ as an IRQ while running a guest KVM: arm64: vgic: Be tolerant to the lack of maintenance interrupt KVM: arm64: vgic: Let an interrupt controller advertise lack of HW deactivation KVM: arm64: vgic: move irq->get_input_level into an ops structure KVM: arm64: vgic: Implement SW-driven deactivation KVM: arm64: timer: Refactor IRQ configuration KVM: arm64: timer: Add support for SW-based deactivation irqchip/apple-aic: Advertise some level of vGICv3 compatibility arch/arm64/kvm/arch_timer.c| 161 + arch/arm64/kvm/hyp/hyp-entry.S | 6 +- arch/arm64/kvm/vgic/vgic-init.c| 34 +- arch/arm64/kvm/vgic/vgic-v2.c | 19 ++- arch/arm64/kvm/vgic/vgic-v3.c | 19 ++- arch/arm64/kvm/vgic/vgic.c | 14 +-- drivers/irqchip/irq-apple-aic.c| 8 ++ drivers/irqchip/irq-gic-common.c | 13 -- drivers/irqchip/irq-gic-common.h | 2 - drivers/irqchip/irq-gic-v3.c | 6 +- drivers/irqchip/irq-gic.c | 6 +- include/kvm/arm_vgic.h | 41 +-- include/linux/irqchip/arm-gic-common.h | 25 +--- include/linux/irqchip/arm-vgic-info.h | 43 +++ 14 files changed, 291 insertions(+), 106 deletions(-) create mode 100644 include/linux/irqchip/arm-vgic-info.h -- 2.29.2 ___ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
Re: [PATCH v3 0/9] KVM: arm64: Initial host support for the Apple M1
Hi Marc, On 5/10/21 2:48 PM, Marc Zyngier wrote: > This is a new version of the series previously posted at [2], reworking > the vGIC and timer code to cope with the M1 braindead^Wamusing nature. > > Hardly any change this time around, mostly rebased on top of upstream > now that the dependencies have made it in. > > Tested with multiple concurrent VMs running from an initramfs. > > * From v2: > - Rebased on 5.13-rc1 > - Fixed a couple of nits in the GIC registration code > > * From v1 [1]: > - Rebased on Hector's v4 posting[0] > - Dropped a couple of patches that have been merged in the above series > - Fixed irq_ack callback on the timer path > > [0] https://lore.kernel.org/r/20210402090542.131194-1-mar...@marcan.st > [1] https://lore.kernel.org/r/20210316174617.173033-1-...@kernel.org > [2] https://lore.kernel.org/r/20210403112931.1043452-1-...@kernel.org This looks interesting and I want to take a look. For now, I can only review the series, but maybe at some point I'll take the leap and try to run Linux on my Macbook Air. Can I find something resembling a specification for the Apple interrupt controller, or the only available documentation is in the Linux driver and patches on the mailing list? Thanks, Alex > > Marc Zyngier (9): > irqchip/gic: Split vGIC probing information from the GIC code > KVM: arm64: Handle physical FIQ as an IRQ while running a guest > KVM: arm64: vgic: Be tolerant to the lack of maintenance interrupt > KVM: arm64: vgic: Let an interrupt controller advertise lack of HW > deactivation > KVM: arm64: vgic: move irq->get_input_level into an ops structure > KVM: arm64: vgic: Implement SW-driven deactivation > KVM: arm64: timer: Refactor IRQ configuration > KVM: arm64: timer: Add support for SW-based deactivation > irqchip/apple-aic: Advertise some level of vGICv3 compatibility > > arch/arm64/kvm/arch_timer.c| 161 + > arch/arm64/kvm/hyp/hyp-entry.S | 6 +- > arch/arm64/kvm/vgic/vgic-init.c| 34 +- > arch/arm64/kvm/vgic/vgic-v2.c | 19 ++- > arch/arm64/kvm/vgic/vgic-v3.c | 19 ++- > arch/arm64/kvm/vgic/vgic.c | 14 +-- > drivers/irqchip/irq-apple-aic.c| 8 ++ > drivers/irqchip/irq-gic-common.c | 13 -- > drivers/irqchip/irq-gic-common.h | 2 - > drivers/irqchip/irq-gic-v3.c | 6 +- > drivers/irqchip/irq-gic.c | 6 +- > include/kvm/arm_vgic.h | 41 +-- > include/linux/irqchip/arm-gic-common.h | 25 +--- > include/linux/irqchip/arm-vgic-info.h | 43 +++ > 14 files changed, 291 insertions(+), 106 deletions(-) > create mode 100644 include/linux/irqchip/arm-vgic-info.h > ___ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
Re: [PATCH v3 0/9] KVM: arm64: Initial host support for the Apple M1
Hi Alex, On Wed, 12 May 2021 17:22:43 +0100, Alexandru Elisei wrote: > > Hi Marc, > > On 5/10/21 2:48 PM, Marc Zyngier wrote: > > This is a new version of the series previously posted at [2], reworking > > the vGIC and timer code to cope with the M1 braindead^Wamusing nature. > > > > Hardly any change this time around, mostly rebased on top of upstream > > now that the dependencies have made it in. > > > > Tested with multiple concurrent VMs running from an initramfs. > > > > * From v2: > > - Rebased on 5.13-rc1 > > - Fixed a couple of nits in the GIC registration code > > > > * From v1 [1]: > > - Rebased on Hector's v4 posting[0] > > - Dropped a couple of patches that have been merged in the above series > > - Fixed irq_ack callback on the timer path > > > > [0] https://lore.kernel.org/r/20210402090542.131194-1-mar...@marcan.st > > [1] https://lore.kernel.org/r/20210316174617.173033-1-...@kernel.org > > [2] https://lore.kernel.org/r/20210403112931.1043452-1-...@kernel.org > > This looks interesting and I want to take a look. For now, I can > only review the series, but maybe at some point I'll take the leap > and try to run Linux on my Macbook Air. It is a bit involved at the moment, and I haven't tried on a laptop (the nice thing about the Mini is that you can bury it under a pile of other machines and still make use of it). > Can I find something resembling a specification for the Apple > interrupt controller, or the only available documentation is in the > Linux driver and patches on the mailing list? The Asahi wiki has a bunch of RE goodies, but you really don't need to know much about the HW to follow what this series does. Actually, you instead need to understand what the GIC guarantees to the guest, because this is all about the GIC emulation on a non-GIC interrupt controller. Thanks, M. -- Without deviation from the norm, progress is not possible. ___ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
