KVM: ia64: Add some debug points to provide crash infomation
[linux-2.6.git] / arch / ia64 / kvm / mmio.c
index 7f1a858..21f63ff 100644 (file)
@@ -66,31 +66,25 @@ void lsapic_write(struct kvm_vcpu *v, unsigned long addr,
 
        switch (addr) {
        case PIB_OFST_INTA:
-               /*panic_domain(NULL, "Undefined write on PIB INTA\n");*/
-               panic_vm(v);
+               panic_vm(v, "Undefined write on PIB INTA\n");
                break;
        case PIB_OFST_XTP:
                if (length == 1) {
                        vlsapic_write_xtp(v, val);
                } else {
-                       /*panic_domain(NULL,
-                       "Undefined write on PIB XTP\n");*/
-                       panic_vm(v);
+                       panic_vm(v, "Undefined write on PIB XTP\n");
                }
                break;
        default:
                if (PIB_LOW_HALF(addr)) {
-                       /*lower half */
+                       /*Lower half */
                        if (length != 8)
-                               /*panic_domain(NULL,
-                               "Can't LHF write with size %ld!\n",
-                               length);*/
-                               panic_vm(v);
+                               panic_vm(v, "Can't LHF write with size %ld!\n",
+                                               length);
                        else
                                vlsapic_write_ipi(v, addr, val);
-               } else {   /*   upper half
-                               printk("IPI-UHF write %lx\n",addr);*/
-                       panic_vm(v);
+               } else {   /*Upper half */
+                       panic_vm(v, "IPI-UHF write %lx\n", addr);
                }
                break;
        }
@@ -108,22 +102,18 @@ unsigned long lsapic_read(struct kvm_vcpu *v, unsigned long addr,
                if (length == 1) /* 1 byte load */
                        ; /* There is no i8259, there is no INTA access*/
                else
-                       /*panic_domain(NULL,"Undefined read on PIB INTA\n"); */
-                       panic_vm(v);
+                       panic_vm(v, "Undefined read on PIB INTA\n");
 
                break;
        case PIB_OFST_XTP:
                if (length == 1) {
                        result = VLSAPIC_XTP(v);
-                       /* printk("read xtp %lx\n", result); */
                } else {
-                       /*panic_domain(NULL,
-                       "Undefined read on PIB XTP\n");*/
-                       panic_vm(v);
+                       panic_vm(v, "Undefined read on PIB XTP\n");
                }
                break;
        default:
-               panic_vm(v);
+               panic_vm(v, "Undefined addr access for lsapic!\n");
                break;
        }
        return result;
@@ -162,7 +152,7 @@ static void mmio_access(struct kvm_vcpu *vcpu, u64 src_pa, u64 *dest,
                        /* it's necessary to ensure zero extending */
                        *dest = p->u.ioreq.data & (~0UL >> (64-(s*8)));
        } else
-               panic_vm(vcpu);
+               panic_vm(vcpu, "Unhandled mmio access returned!\n");
 out:
        local_irq_restore(psr);
        return ;
@@ -324,7 +314,9 @@ void emulate_io_inst(struct kvm_vcpu *vcpu, u64 padr, u64 ma)
                return;
        } else {
                inst_type = -1;
-               panic_vm(vcpu);
+               panic_vm(vcpu, "Unsupported MMIO access instruction! \
+                               Bunld[0]=0x%lx, Bundle[1]=0x%lx\n",
+                               bundle.i64[0], bundle.i64[1]);
        }
 
        size = 1 << size;
@@ -335,7 +327,7 @@ void emulate_io_inst(struct kvm_vcpu *vcpu, u64 padr, u64 ma)
                if (inst_type == SL_INTEGER)
                        vcpu_set_gr(vcpu, inst.M1.r1, data, 0);
                else
-                       panic_vm(vcpu);
+                       panic_vm(vcpu, "Unsupported instruction type!\n");
 
        }
        vcpu_increment_iip(vcpu);