KVM: MIPS: Add guest exit exception callback

[linux.git] / arch / mips / kvm / trap_emul.c

diff --git a/arch/mips/kvm/trap_emul.c b/arch/mips/kvm/trap_emul.c
index 50b812bfe083214f1ac2c67b316f808c61668657..fda45b4bdebcb62b62f69638863c01340c9ecd68 100644 (file)
--- a/arch/mips/kvm/trap_emul.c
+++ b/arch/mips/kvm/trap_emul.c
@@ -40,6 +40,29 @@ static gpa_t kvm_trap_emul_gva_to_gpa_cb(gva_t gva)
        return gpa;
 }
 
+static int kvm_trap_emul_no_handler(struct kvm_vcpu *vcpu)
+{
+       u32 __user *opc = (u32 __user *) vcpu->arch.pc;
+       u32 cause = vcpu->arch.host_cp0_cause;
+       u32 exccode = (cause & CAUSEF_EXCCODE) >> CAUSEB_EXCCODE;
+       unsigned long badvaddr = vcpu->arch.host_cp0_badvaddr;
+       u32 inst = 0;
+
+       /*
+        *  Fetch the instruction.
+        */
+       if (cause & CAUSEF_BD)
+               opc += 1;
+       kvm_get_badinstr(opc, vcpu, &inst);
+
+       kvm_err("Exception Code: %d not handled @ PC: %p, inst: 0x%08x BadVaddr: %#lx Status: %#lx\n",
+               exccode, opc, inst, badvaddr,
+               kvm_read_c0_guest_status(vcpu->arch.cop0));
+       kvm_arch_vcpu_dump_regs(vcpu);
+       vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
+       return RESUME_HOST;
+}
+
 static int kvm_trap_emul_handle_cop_unusable(struct kvm_vcpu *vcpu)
 {
        struct mips_coproc *cop0 = vcpu->arch.cop0;
@@ -1262,6 +1285,7 @@ static struct kvm_mips_callbacks kvm_trap_emul_callbacks = {
        .handle_msa_fpe = kvm_trap_emul_handle_msa_fpe,
        .handle_fpe = kvm_trap_emul_handle_fpe,
        .handle_msa_disabled = kvm_trap_emul_handle_msa_disabled,
+       .handle_guest_exit = kvm_trap_emul_no_handler,
 
        .hardware_enable = kvm_trap_emul_hardware_enable,
        .hardware_disable = kvm_trap_emul_hardware_disable,