MIPS: KVM: Fix kvm_debug bit-rottage

Fix build errors when DEBUG is defined in arch/mips/kvm/.
 - The DEBUG code in kvm_mips_handle_tlbmod() was missing some variables.
 - The DEBUG code in kvm_mips_host_tlb_write() was conditional on an
   undefined "debug" variable.
 - The DEBUG code in kvm_mips_host_tlb_inv() accessed asid_map directly
   rather than using kvm_mips_get_user_asid(). Also fixed brace
   placement.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: kvm@vger.kernel.org
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: Sanjay Lal <sanjayl@kymasys.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/mips/kvm/kvm_mips_emul.c

@@ -1831,8 +1831,12 @@ kvm_mips_handle_tlbmod(unsigned long cause, uint32_t *opc,
 		       struct kvm_run *run, struct kvm_vcpu *vcpu)
 {
 	enum emulation_result er = EMULATE_DONE;
-
 #ifdef DEBUG
+	struct mips_coproc *cop0 = vcpu->arch.cop0;
+	unsigned long entryhi = (vcpu->arch.host_cp0_badvaddr & VPN2_MASK) |
+				(kvm_read_c0_guest_entryhi(cop0) & ASID_MASK);
+	int index;
+
 	/*
 	 * If address not in the guest TLB, then we are in trouble
 	 */

arch/mips/kvm/kvm_tlb.c

@@ -233,12 +233,9 @@ kvm_mips_host_tlb_write(struct kvm_vcpu *vcpu, unsigned long entryhi,
 	tlbw_use_hazard();
 
 #ifdef DEBUG
-	if (debug) {
+	kvm_debug("@ %#lx idx: %2d [entryhi(R): %#lx] entrylo0(R): 0x%08lx, entrylo1(R): 0x%08lx\n",
-		kvm_debug("@ %#lx idx: %2d [entryhi(R): %#lx] "
+		  vcpu->arch.pc, idx, read_c0_entryhi(),
-			  "entrylo0(R): 0x%08lx, entrylo1(R): 0x%08lx\n",
+		  read_c0_entrylo0(), read_c0_entrylo1());
-			  vcpu->arch.pc, idx, read_c0_entryhi(),
-			  read_c0_entrylo0(), read_c0_entrylo1());
-	}
 #endif
 
 	/* Flush D-cache */
@@ -507,10 +504,9 @@ int kvm_mips_host_tlb_inv(struct kvm_vcpu *vcpu, unsigned long va)
 	local_irq_restore(flags);
 
 #ifdef DEBUG
-	if (idx > 0) {
+	if (idx > 0)
 		kvm_debug("%s: Invalidated entryhi %#lx @ idx %d\n", __func__,
-			  (va & VPN2_MASK) | (vcpu->arch.asid_map[va & ASID_MASK] & ASID_MASK), idx);
+			  (va & VPN2_MASK) | kvm_mips_get_user_asid(vcpu), idx);
-	}
 #endif
 
 	return 0;