This series illustrates an alternative approach to Eric Auger's direct EOI setup patches [1] in terms of the KVM VGIC support. The idea is to maintain existing semantics for the VGIC for mapped level-triggered IRQs and think support for the timer into it. Patch 1 is necessary to align the timer and VFIO ways of signaling the VGIC. Patch 2 is stolen from Eric's series and is necessary for these patches to compile as well. Patch 3 includes the core support for mapped level-triggered interrupts. Patch 4 handles guest MMIO access to the virtual distributor. Patch 5 moves some code around for patch 6. Patch 6 implements an optimization for the timer. The last two patches could be deferred until the timer optimization series. Based on v4.13 Changes since v2: - Removed patch 5 from v2 and integrating the changes in what's now patch 5 to make it easier to reuse code when adding VFIO integration. - Changed the virtual distributor MMIO handling to use the pending_latch and more closely match the semantics of SPENDR and CPENDR for both level and edge mapped interrupts. Changes since v1: - Added necessary changes to the timer (Patch 1) - Added handling of guest MMIO accesses to the virtual distributor (Patch 4) - Addressed Marc's comments from the initial RFC (mostly renames) Thanks, -Christoffer --- Christoffer Dall (4): KVM: arm/arm64: Don't cache the timer IRQ level KVM: arm/arm64: vgic: Support level-triggered mapped interrupts KVM: arm/arm64: Support VGIC dist pend/active changes for mapped IRQs KVM: arm/arm64: Provide a vgic interrupt line level sample function Eric Auger (1): KVM: arm/arm64: vgic: restructure kvm_vgic_(un)map_phys_irq include/kvm/arm_vgic.h | 19 +++++++-- virt/kvm/arm/arch_timer.c | 52 +++++++++++------------ virt/kvm/arm/vgic/vgic-mmio.c | 33 +++++++++++++++ virt/kvm/arm/vgic/vgic-v2.c | 29 +++++++++++++ virt/kvm/arm/vgic/vgic-v3.c | 29 +++++++++++++ virt/kvm/arm/vgic/vgic.c | 96 ++++++++++++++++++++++++++++++++++++------- virt/kvm/arm/vgic/vgic.h | 8 ++++ 7 files changed, 219 insertions(+), 47 deletions(-) -- 2.9.0
