RISC-V: KVM: Add common kvm_riscv_vcpu_sbi_system_reset() function

We rename kvm_sbi_system_shutdown() to kvm_riscv_vcpu_sbi_system_reset()
and move it to vcpu_sbi.c so that it can be shared by SBI v0.1 shutdown
and SBI v0.3 SRST extension.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Anup Patel <anup@brainfault.org>

diff --git a/arch/riscv/include/asm/kvm_vcpu_sbi.h b/arch/riscv/include/asm/kvm_vcpu_sbi.h
index 04cd81f..83d6d4d 100644 (file)
--- a/arch/riscv/include/asm/kvm_vcpu_sbi.h
+++ b/arch/riscv/include/asm/kvm_vcpu_sbi.h
@@ -28,6 +28,9 @@ struct kvm_vcpu_sbi_extension {
 };
 
 void kvm_riscv_vcpu_sbi_forward(struct kvm_vcpu *vcpu, struct kvm_run *run);
+void kvm_riscv_vcpu_sbi_system_reset(struct kvm_vcpu *vcpu,
+                                    struct kvm_run *run,
+                                    u32 type, u64 flags);
 const struct kvm_vcpu_sbi_extension *kvm_vcpu_sbi_find_ext(unsigned long extid);
 
 #endif /* __RISCV_KVM_VCPU_SBI_H__ */

diff --git a/arch/riscv/kvm/vcpu_sbi.c b/arch/riscv/kvm/vcpu_sbi.c
index 78aa3db..11ae4f6 100644 (file)
--- a/arch/riscv/kvm/vcpu_sbi.c
+++ b/arch/riscv/kvm/vcpu_sbi.c
@@ -79,6 +79,23 @@ void kvm_riscv_vcpu_sbi_forward(struct kvm_vcpu *vcpu, struct kvm_run *run)
        run->riscv_sbi.ret[1] = cp->a1;
 }
 
+void kvm_riscv_vcpu_sbi_system_reset(struct kvm_vcpu *vcpu,
+                                    struct kvm_run *run,
+                                    u32 type, u64 flags)
+{
+       unsigned long i;
+       struct kvm_vcpu *tmp;
+
+       kvm_for_each_vcpu(i, tmp, vcpu->kvm)
+               tmp->arch.power_off = true;
+       kvm_make_all_cpus_request(vcpu->kvm, KVM_REQ_SLEEP);
+
+       memset(&run->system_event, 0, sizeof(run->system_event));
+       run->system_event.type = type;
+       run->system_event.flags = flags;
+       run->exit_reason = KVM_EXIT_SYSTEM_EVENT;
+}
+
 int kvm_riscv_vcpu_sbi_return(struct kvm_vcpu *vcpu, struct kvm_run *run)
 {
        struct kvm_cpu_context *cp = &vcpu->arch.guest_context;

diff --git a/arch/riscv/kvm/vcpu_sbi_v01.c b/arch/riscv/kvm/vcpu_sbi_v01.c
index 2ab52b6..da4d6c9 100644 (file)
--- a/arch/riscv/kvm/vcpu_sbi_v01.c
+++ b/arch/riscv/kvm/vcpu_sbi_v01.c
@@ -14,21 +14,6 @@
 #include <asm/kvm_vcpu_timer.h>
 #include <asm/kvm_vcpu_sbi.h>
 
-static void kvm_sbi_system_shutdown(struct kvm_vcpu *vcpu,
-                                   struct kvm_run *run, u32 type)
-{
-       unsigned long i;
-       struct kvm_vcpu *tmp;
-
-       kvm_for_each_vcpu(i, tmp, vcpu->kvm)
-               tmp->arch.power_off = true;
-       kvm_make_all_cpus_request(vcpu->kvm, KVM_REQ_SLEEP);
-
-       memset(&run->system_event, 0, sizeof(run->system_event));
-       run->system_event.type = type;
-       run->exit_reason = KVM_EXIT_SYSTEM_EVENT;
-}
-
 static int kvm_sbi_ext_v01_handler(struct kvm_vcpu *vcpu, struct kvm_run *run,
                                      unsigned long *out_val,
                                      struct kvm_cpu_trap *utrap,
@@ -80,7 +65,8 @@ static int kvm_sbi_ext_v01_handler(struct kvm_vcpu *vcpu, struct kvm_run *run,
                }
                break;
        case SBI_EXT_0_1_SHUTDOWN:
-               kvm_sbi_system_shutdown(vcpu, run, KVM_SYSTEM_EVENT_SHUTDOWN);
+               kvm_riscv_vcpu_sbi_system_reset(vcpu, run,
+                                               KVM_SYSTEM_EVENT_SHUTDOWN, 0);
                *exit = true;
                break;
        case SBI_EXT_0_1_REMOTE_FENCE_I: