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Re: [PATCH v1 3/4] target/riscv/kvm: handle the exit with debug reason
From: |
Andrew Jones |
Subject: |
Re: [PATCH v1 3/4] target/riscv/kvm: handle the exit with debug reason |
Date: |
Mon, 27 May 2024 17:48:23 +0200 |
On Mon, May 27, 2024 at 02:19:15AM GMT, Chao Du wrote:
> If the breakpoint belongs to the userspace then set the ret value.
>
> Signed-off-by: Chao Du <duchao@eswincomputing.com>
> ---
> target/riscv/kvm/kvm-cpu.c | 20 ++++++++++++++++++++
> 1 file changed, 20 insertions(+)
>
> diff --git a/target/riscv/kvm/kvm-cpu.c b/target/riscv/kvm/kvm-cpu.c
> index 0bc3348b91..0c45e520b2 100644
> --- a/target/riscv/kvm/kvm-cpu.c
> +++ b/target/riscv/kvm/kvm-cpu.c
> @@ -1555,6 +1555,21 @@ static int kvm_riscv_handle_csr(CPUState *cs, struct
> kvm_run *run)
> return ret;
> }
>
> +static bool kvm_riscv_handle_debug(CPUState *cs)
> +{
> + RISCVCPU *cpu = RISCV_CPU(cs);
> + CPURISCVState *env = &cpu->env;
> +
> + /* Ensure PC is synchronised */
> + kvm_cpu_synchronize_state(cs);
> +
> + if (kvm_find_sw_breakpoint(cs, env->pc)) {
> + return true;
> + }
> +
> + return false;
> +}
> +
> int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
> {
> int ret = 0;
> @@ -1565,6 +1580,11 @@ int kvm_arch_handle_exit(CPUState *cs, struct kvm_run
> *run)
> case KVM_EXIT_RISCV_CSR:
> ret = kvm_riscv_handle_csr(cs, run);
> break;
> + case KVM_EXIT_DEBUG:
> + if (kvm_riscv_handle_debug(cs)) {
> + ret = EXCP_DEBUG;
> + }
> + break;
> default:
> qemu_log_mask(LOG_UNIMP, "%s: un-handled exit reason %d\n",
> __func__, run->exit_reason);
> --
> 2.17.1
>
>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>