Hi Julian, Here are the proposed patches for KVM support. Feel free to merge them together if you want. There are two minor wrinkles. The first is we fake the HSR_EC value to keep QEMU happy. I don't think this is a major problem because we aren't dealing with a guest register but the mechanism for the guest debug to know what happened. In this case we still single-stepped even if an exception wasn't actually involved. The second is we have to slightly munge the handling of return kvm_handle_mmio_return to properly exit the loop on error or 0. Alex Bennée (2): KVM: arm64: handle single-stepping trapped instructions kvm: arm64: handle single-step of userspace mmio instructions arch/arm/include/asm/kvm_host.h | 2 ++ arch/arm64/include/asm/kvm_host.h | 1 + arch/arm64/kvm/debug.c | 21 ++++++++++++++++++ arch/arm64/kvm/handle_exit.c | 45 +++++++++++++++++++++++++++------------ virt/kvm/arm/arm.c | 2 +- virt/kvm/arm/mmio.c | 3 ++- 6 files changed, 58 insertions(+), 16 deletions(-) -- 2.14.1
