KVM: x86 emulator: make set_cr() callback return error if it fails

[deliverable/linux.git] / arch / x86 / kvm / emulate.c

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index f56ec486393e5b0bccb9a101de0cf8566c9d76f8..061f7d37c9f74c7f2616923d1c8e90c0ecd42911 100644 (file)
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -2272,7 +2272,10 @@ static int load_state_from_tss32(struct x86_emulate_ctxt *ctxt,
        struct decode_cache *c = &ctxt->decode;
        int ret;
 
-       ops->set_cr(3, tss->cr3, ctxt->vcpu);
+       if (ops->set_cr(3, tss->cr3, ctxt->vcpu)) {
+               kvm_inject_gp(ctxt->vcpu, 0);
+               return X86EMUL_PROPAGATE_FAULT;
+       }
        c->eip = tss->eip;
        ctxt->eflags = tss->eflags | 2;
        c->regs[VCPU_REGS_RAX] = tss->eax;
@@ -3135,7 +3138,10 @@ twobyte_insn:
                c->dst.type = OP_NONE;  /* no writeback */
                break;
        case 0x22: /* mov reg, cr */
-               ops->set_cr(c->modrm_reg, c->modrm_val, ctxt->vcpu);
+               if (ops->set_cr(c->modrm_reg, c->modrm_val, ctxt->vcpu)) {
+                       kvm_inject_gp(ctxt->vcpu, 0);
+                       goto done;
+               }
                c->dst.type = OP_NONE;
                break;
        case 0x23: /* mov from reg to dr */