Implement kvm_arch_handle_exit for loongarch. In this
function, the KVM_EXIT_LOONGARCH_IOCSR is handled,
we read or write the iocsr address space by the addr,
length and is_write argument in kvm_run.
Signed-off-by: Tianrui Zhao <zhaotian...@loongson.cn>
Signed-off-by: xianglai li <lixiang...@loongson.cn>
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
Reviewed-by: Song Gao <gaos...@loongson.cn>
---
target/loongarch/kvm/kvm.c | 24 +++++++++++++++++++++++-
target/loongarch/trace-events | 1 +
2 files changed, 24 insertions(+), 1 deletion(-)
diff --git a/target/loongarch/kvm/kvm.c b/target/loongarch/kvm/kvm.c
index 85e7aeb083..d2dab3fef4 100644
--- a/target/loongarch/kvm/kvm.c
+++ b/target/loongarch/kvm/kvm.c
@@ -723,7 +723,29 @@ bool kvm_arch_cpu_check_are_resettable(void)
int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
{
- return 0;
+ int ret = 0;
+ LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+ CPULoongArchState *env = &cpu->env;
+ MemTxAttrs attrs = {};
+
+ attrs.requester_id = env_cpu(env)->cpu_index;
+
+ trace_kvm_arch_handle_exit(run->exit_reason);
+ switch (run->exit_reason) {
+ case KVM_EXIT_LOONGARCH_IOCSR:
+ address_space_rw(&env->address_space_iocsr,
+ run->iocsr_io.phys_addr,
+ attrs,
+ run->iocsr_io.data,
+ run->iocsr_io.len,
+ run->iocsr_io.is_write);
+ break;
+ default:
+ ret = -1;
+ warn_report("KVM: unknown exit reason %d", run->exit_reason);
+ break;
+ }
+ return ret;
}
void kvm_arch_accel_class_init(ObjectClass *oc)
diff --git a/target/loongarch/trace-events b/target/loongarch/trace-events
index 937c3c7c0c..021839880e 100644
--- a/target/loongarch/trace-events
+++ b/target/loongarch/trace-events
@@ -11,3 +11,4 @@ kvm_failed_get_counter(const char *msg) "Failed to get
counter from KVM: %s"
kvm_failed_put_counter(const char *msg) "Failed to put counter into KVM: %s"
kvm_failed_get_cpucfg(const char *msg) "Failed to get cpucfg from KVM: %s"
kvm_failed_put_cpucfg(const char *msg) "Failed to put cpucfg into KVM: %s"
+kvm_arch_handle_exit(int num) "kvm arch handle exit, the reason number: %d"
--
2.39.1
