Hi, This series adds AIA irqchip_split support, effective when using AIA with aia=aplic-imsic and -accel kvm,kernel-irqchip=split.
The main difference between what we currently have and irqchip_split() mode is that, when using split mode, QEMU will emulate the APLIC controller instead of using the in-kernel APLIC controller provided by KVM. After this series this is the matrix of which interrupt controllers we're emulating based on 'virt' machine configuration and accelerator properties: Accel Accel props AIA type APLIC-m IMSIC-m APLIC-s IMSIC-s tcg ---- aplic emul n/a emul n/a tcg ---- aplic-imsic emul emul emul emul kvm ---- aplic n/a n/a emul n/a kvm none aplic-imsic n/a n/a in-kernel in-kernel kvm irqchip=split aplic-imsic n/a n/a emul in-kernel Patches based on alistair/riscv-to-apply.next. Daniel Henrique Barboza (8): hw/intc/riscv_aplic: rename is_kvm_aia() hw/riscv/virt.c: reduce virt_use_kvm_aia() usage hw/riscv/virt.c: rename helper to virt_use_kvm_aia_aplic_imsic() target/riscv/kvm: consider irqchip_split() in aia_create() hw/riscv/virt.c, riscv_aplic.c: add 'emulated_aplic' helpers hw/intc/riscv_aplic: add kvm_msicfgaddr for split mode aplic-imsic target/riscv/kvm: remove irqchip_split() restriction docs: update riscv/virt.rst with kernel-irqchip=split support docs/specs/index.rst | 1 + docs/specs/riscv-aia.rst | 83 +++++++++++++++++++++++++++++++++++ docs/system/riscv/virt.rst | 7 +++ hw/intc/riscv_aplic.c | 68 ++++++++++++++++++++++------ hw/riscv/virt.c | 38 +++++++++++----- include/hw/intc/riscv_aplic.h | 8 ++++ target/riscv/kvm/kvm-cpu.c | 41 +++++++++-------- 7 files changed, 202 insertions(+), 44 deletions(-) create mode 100644 docs/specs/riscv-aia.rst -- 2.45.2
