target/riscv: Set default XLEN for hypervisor

When swap regs for hypervisor, the value of vsstatus or mstatus_hs
should have the right XLEN. Otherwise, it will propagate to mstatus.

Signed-off-by: LIU Zhiwei <[email protected]>
Reviewed-by: Alistair Francis <[email protected]>
Message-id: [email protected]
Signed-off-by: Alistair Francis <[email protected]>

Author: LIU Zhiwei

target/riscv/cpu.c

@@ -422,6 +422,16 @@ static void riscv_cpu_reset(DeviceState *dev)
          */
         env->mstatus = set_field(env->mstatus, MSTATUS64_SXL, env->misa_mxl);
         env->mstatus = set_field(env->mstatus, MSTATUS64_UXL, env->misa_mxl);
+        if (riscv_has_ext(env, RVH)) {
+            env->vsstatus = set_field(env->vsstatus,
+                                      MSTATUS64_SXL, env->misa_mxl);
+            env->vsstatus = set_field(env->vsstatus,
+                                      MSTATUS64_UXL, env->misa_mxl);
+            env->mstatus_hs = set_field(env->mstatus_hs,
+                                        MSTATUS64_SXL, env->misa_mxl);
+            env->mstatus_hs = set_field(env->mstatus_hs,
+                                        MSTATUS64_UXL, env->misa_mxl);
+        }
     }
     env->mcause = 0;
     env->pc = env->resetvec;