This series implements QEMU KVM Guest Debug on RISC-V, with which we could debug RISC-V KVM guest from the host side, using software breakpoints.
This series is based on riscv-to-apply.next branch (v9.0.0) and is also available at: https://github.com/Du-Chao/alistair23-qemu/tree/riscv-to-apply.next.0528 The corresponding KVM side patches have been merged already: https://lore.kernel.org/kvm/20240402062628.5425-1-duc...@eswincomputing.com/ A TODO list which will be added later: 1. HW breakpoints support 2. A 'corner case' in which the debug exception is not inserted by the debugger, need to be re-injected to the guest. v2->v2 resend: - add the type conversion in patch #1 to avoid warnings v1->v2: - squash patch #2 into #1 - check the instruction length from the tail two bits, instead of passing the length information by parameters. RFC->v1: - Rebased on riscv-to-apply.next - use configs/ definition to conditionalize debug support v1 link: https://lore.kernel.org/qemu-riscv/20240527021916.12953-1-duc...@eswincomputing.com/ RFC link: https://lore.kernel.org/qemu-riscv/20231221094923.7349-1-duc...@eswincomputing.com/ Chao Du (3): target/riscv/kvm: add software breakpoints support target/riscv/kvm: handle the exit with debug reason target/riscv/kvm: define TARGET_KVM_HAVE_GUEST_DEBUG configs/targets/riscv64-softmmu.mak | 1 + target/riscv/kvm/kvm-cpu.c | 89 +++++++++++++++++++++++++++++ 2 files changed, 90 insertions(+) -- 2.17.1
