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>

diff --git a/arch/mips/kvm/kvm_mips_emul.c b/arch/mips/kvm/kvm_mips_emul.c
index 6d257384c9b43eb3b3e39b95e6546d0d670f0be5..c81ab791b8f224e18919991994c57d0d64f999b3 100644 (file)
--- a/arch/mips/kvm/kvm_mips_emul.c
+++ b/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
         */

diff --git a/arch/mips/kvm/kvm_tlb.c b/arch/mips/kvm/kvm_tlb.c
index d65999a9f8af3de0e37a66e5628754932f02a6e2..994fc238418086429aa96c9f7cfe486ca101860b 100644 (file)
--- a/arch/mips/kvm/kvm_tlb.c
+++ b/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",
-                         vcpu->arch.pc, idx, read_c0_entryhi(),
-                         read_c0_entrylo0(), read_c0_entrylo1());
-       }
+       kvm_debug("@ %#lx idx: %2d [entryhi(R): %#lx] entrylo0(R): 0x%08lx, entrylo1(R): 0x%08lx\n",
+                 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;