Re: [RFC PATCH 0/4] target/riscv/kvm: QEMU support for KVM Guest Debug on RISC-V

[Daniel Henrique Barboza]

Hi,

It seems that we still need the kernel KVM side to be sorted out first [1],
so I believe we should wait a bit until we can review this RFC. Otherwise we
might risk reviewing something that has to be changed later.


[1] https://lore.kernel.org/kvm/20231221095002.7404-1-duchao@eswincomputing.com/


Thanks,

Daniel

On 12/21/23 06:49, Chao Du wrote:
> This series implements QEMU KVM Guest Debug on RISC-V. Currently, we can
> debug RISC-V KVM guest from the host side, with software breakpoints.
>
> A brief test was done on QEMU RISC-V hypervisor emulator.
>
> A TODO list which will be added later:
> 1. HW breakpoints support
> 2. Test cases
>
> This series is based on QEMU 8.2.0-rc4 and is also available at:
> https://github.com/Du-Chao/qemu/tree/riscv_gd_sw
>
> This is dependent on KVM side changes:
> https://github.com/Du-Chao/linux/tree/riscv_gd_sw
>
> Chao Du (4):
>    target/riscv/kvm: add software breakpoints support
>    target/riscv/kvm: implement kvm_arch_update_guest_debug()
>    target/riscv/kvm: handle the exit with debug reason
>    linux-headers: enable KVM GUEST DEBUG for RISC-V
>
>   accel/kvm/kvm-all.c           |   8 +--
>   include/sysemu/kvm.h          |   6 +-
>   linux-headers/asm-riscv/kvm.h |   1 +
>   target/arm/kvm64.c            |   6 +-
>   target/i386/kvm/kvm.c         |   6 +-
>   target/mips/kvm.c             |   6 +-
>   target/ppc/kvm.c              |   6 +-
>   target/riscv/kvm/kvm-cpu.c    | 101 ++++++++++++++++++++++++++++++++++
>   target/s390x/kvm/kvm.c        |   6 +-
>   9 files changed, 130 insertions(+), 16 deletions(-)
>
> --
> 2.17.1