Set the control flag when there are active breakpoints. This will
help KVM to know the status in the userspace.

Signed-off-by: Chao Du <duchao@eswincomputing.com>
---
 target/riscv/kvm/kvm-cpu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/target/riscv/kvm/kvm-cpu.c b/target/riscv/kvm/kvm-cpu.c
index cba55c552d..0bc3348b91 100644
--- a/target/riscv/kvm/kvm-cpu.c
+++ b/target/riscv/kvm/kvm-cpu.c
@@ -2039,5 +2039,7 @@ void kvm_arch_remove_all_hw_breakpoints(void)
 
 void kvm_arch_update_guest_debug(CPUState *cs, struct kvm_guest_debug *dbg)
 {
-    /* TODO; To be implemented later. */
+    if (kvm_sw_breakpoints_active(cs)) {
+        dbg->control |= KVM_GUESTDBG_ENABLE;
+    }
 }
-- 
2.17.1

On Mon, May 27, 2024 at 02:19:14AM GMT, Chao Du wrote:
> Set the control flag when there are active breakpoints. This will
> help KVM to know the status in the userspace.
> 
> Signed-off-by: Chao Du <duchao@eswincomputing.com>
> ---
>  target/riscv/kvm/kvm-cpu.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/target/riscv/kvm/kvm-cpu.c b/target/riscv/kvm/kvm-cpu.c
> index cba55c552d..0bc3348b91 100644
> --- a/target/riscv/kvm/kvm-cpu.c
> +++ b/target/riscv/kvm/kvm-cpu.c
> @@ -2039,5 +2039,7 @@ void kvm_arch_remove_all_hw_breakpoints(void)
>  
>  void kvm_arch_update_guest_debug(CPUState *cs, struct kvm_guest_debug *dbg)
>  {
> -    /* TODO; To be implemented later. */
> +    if (kvm_sw_breakpoints_active(cs)) {
> +        dbg->control |= KVM_GUESTDBG_ENABLE;
> +    }
>  }
> -- 
> 2.17.1
> 
>

Should squash this into the previous patch.

Thanks,
drew

On 5/26/24 23:19, Chao Du wrote:
> Set the control flag when there are active breakpoints. This will
> help KVM to know the status in the userspace.
> 
> Signed-off-by: Chao Du <duchao@eswincomputing.com>
> ---

Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>

>   target/riscv/kvm/kvm-cpu.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/target/riscv/kvm/kvm-cpu.c b/target/riscv/kvm/kvm-cpu.c
> index cba55c552d..0bc3348b91 100644
> --- a/target/riscv/kvm/kvm-cpu.c
> +++ b/target/riscv/kvm/kvm-cpu.c
> @@ -2039,5 +2039,7 @@ void kvm_arch_remove_all_hw_breakpoints(void)
>   
>   void kvm_arch_update_guest_debug(CPUState *cs, struct kvm_guest_debug *dbg)
>   {
> -    /* TODO; To be implemented later. */
> +    if (kvm_sw_breakpoints_active(cs)) {
> +        dbg->control |= KVM_GUESTDBG_ENABLE;
> +    }
>   }