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

["Chao Du" <duchao@eswincomputing.com>]

Gentle ping...

On 2024-04-09 17:43, Chao Du <duchao@eswincomputing.com> wrote:
> 
> Hi Daniel and all,
> 
> The KVM patches have been reviewd and are in the queue.
> https://lore.kernel.org/all/20240402062628.5425-1-duchao@eswincomputing.com/
> 
> Could you please review in the QEMU side ?
> Then I will rebase this series with your comments.
> 
> Some Notes:
> 1. As the first stage, only the software breakpoints is implemented.
> 2. A 'corner case' in which the debug exception is not inserted by the
> debugger, need to be re-injected to the guest. This is not handled yet
> in this series.
> 
> Thanks,
> Chao
> 
> 
> On 2023-12-22 22:16, Daniel Henrique Barboza <dbarboza@ventanamicro.com> wrote:
> > 
> > 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
> > >