| Message ID | 20231228084051.3235354-8-zhaotianrui@loongson.cn (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add loongarch kvm accel support | expand |
在 2023/12/28 下午4:40, Tianrui Zhao 写道: > 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 <zhaotianrui@loongson.cn> > Signed-off-by: xianglai li <lixianglai@loongson.cn> > Reviewed-by: Richard Henderson <richard.henderson@linaro.org> > --- > target/loongarch/kvm.c | 24 +++++++++++++++++++++++- > target/loongarch/trace-events | 1 + > 2 files changed, 24 insertions(+), 1 deletion(-) Reviewed-by: Song Gao <gaosong@loongson.cn> Thanks. Song Gao > diff --git a/target/loongarch/kvm.c b/target/loongarch/kvm.c > index 85e7aeb083..d2dab3fef4 100644 > --- a/target/loongarch/kvm.c > +++ b/target/loongarch/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"
diff --git a/target/loongarch/kvm.c b/target/loongarch/kvm.c index 85e7aeb083..d2dab3fef4 100644 --- a/target/loongarch/kvm.c +++ b/target/loongarch/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"