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[RFC,3/3] RISC-V: KVM: Handle breakpoint exits for VCPU

Message ID 20231221095002.7404-4-duchao@eswincomputing.com (mailing list archive)
State New, archived
Headers show
Series RISC-V: KVM: Guest Debug Support | expand

Commit Message

Chao Du Dec. 21, 2023, 9:50 a.m. UTC 
Exit to userspace for breakpoint traps. Set the exit_reason as
KVM_EXIT_DEBUG before exit.

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

diff --git a/arch/riscv/kvm/vcpu_exit.c b/arch/riscv/kvm/vcpu_exit.c
index 2415722c01b8..5761f95abb60 100644
--- a/arch/riscv/kvm/vcpu_exit.c
+++ b/arch/riscv/kvm/vcpu_exit.c
@@ -204,6 +204,10 @@  int kvm_riscv_vcpu_exit(struct kvm_vcpu *vcpu, struct kvm_run *run,
 		if (vcpu->arch.guest_context.hstatus & HSTATUS_SPV)
 			ret = kvm_riscv_vcpu_sbi_ecall(vcpu, run);
 		break;
+	case EXC_BREAKPOINT:
+		run->exit_reason = KVM_EXIT_DEBUG;
+		ret = 0;
+		break;
 	default:
 		break;
 	}