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authorHollis Blanchard <hollisb@us.ibm.com>2008-11-05 09:36:14 -0600
committerAvi Kivity <avi@redhat.com>2008-12-31 16:52:21 +0200
commit9dd921cfea734409a931ccc6eafd7f09850311e9 (patch)
tree84bd4c0fe65cb866dd78882c90e54df5f7d17313 /arch/powerpc/kvm/booke.c
parentd9fbd03d240380826c0ec16f927242be24ff6265 (diff)
KVM: ppc: Refactor powerpc.c to relocate 440-specific code
This introduces a set of core-provided hooks. For 440, some of these are implemented by booke.c, with the rest in (the new) 44x.c. Note that these hooks are link-time, not run-time. Since it is not possible to build a single kernel for both e500 and 440 (for example), using function pointers would only add overhead. Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/powerpc/kvm/booke.c')
-rw-r--r--arch/powerpc/kvm/booke.c61
1 files changed, 47 insertions, 14 deletions
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index b1e90a15155a..138014acf3cf 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -134,6 +134,40 @@ void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu)
}
}
+static void kvmppc_booke_queue_exception(struct kvm_vcpu *vcpu, int exception)
+{
+ unsigned int priority = exception_priority[exception];
+ set_bit(priority, &vcpu->arch.pending_exceptions);
+}
+
+static void kvmppc_booke_clear_exception(struct kvm_vcpu *vcpu, int exception)
+{
+ unsigned int priority = exception_priority[exception];
+ clear_bit(priority, &vcpu->arch.pending_exceptions);
+}
+
+void kvmppc_core_queue_program(struct kvm_vcpu *vcpu)
+{
+ kvmppc_booke_queue_exception(vcpu, BOOKE_INTERRUPT_PROGRAM);
+}
+
+void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
+{
+ kvmppc_booke_queue_exception(vcpu, BOOKE_INTERRUPT_DECREMENTER);
+}
+
+int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
+{
+ unsigned int priority = exception_priority[BOOKE_INTERRUPT_DECREMENTER];
+ return test_bit(priority, &vcpu->arch.pending_exceptions);
+}
+
+void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
+ struct kvm_interrupt *irq)
+{
+ kvmppc_booke_queue_exception(vcpu, BOOKE_INTERRUPT_EXTERNAL);
+}
+
/* Check if we are ready to deliver the interrupt */
static int kvmppc_can_deliver_interrupt(struct kvm_vcpu *vcpu, int interrupt)
{
@@ -168,7 +202,7 @@ static int kvmppc_can_deliver_interrupt(struct kvm_vcpu *vcpu, int interrupt)
return r;
}
-static void kvmppc_deliver_interrupt(struct kvm_vcpu *vcpu, int interrupt)
+static void kvmppc_booke_deliver_interrupt(struct kvm_vcpu *vcpu, int interrupt)
{
switch (interrupt) {
case BOOKE_INTERRUPT_DECREMENTER:
@@ -183,7 +217,7 @@ static void kvmppc_deliver_interrupt(struct kvm_vcpu *vcpu, int interrupt)
}
/* Check pending exceptions and deliver one, if possible. */
-void kvmppc_check_and_deliver_interrupts(struct kvm_vcpu *vcpu)
+void kvmppc_core_deliver_interrupts(struct kvm_vcpu *vcpu)
{
unsigned long *pending = &vcpu->arch.pending_exceptions;
unsigned int exception;
@@ -193,8 +227,8 @@ void kvmppc_check_and_deliver_interrupts(struct kvm_vcpu *vcpu)
while (priority <= BOOKE_MAX_INTERRUPT) {
exception = priority_exception[priority];
if (kvmppc_can_deliver_interrupt(vcpu, exception)) {
- kvmppc_clear_exception(vcpu, exception);
- kvmppc_deliver_interrupt(vcpu, exception);
+ kvmppc_booke_clear_exception(vcpu, exception);
+ kvmppc_booke_deliver_interrupt(vcpu, exception);
break;
}
@@ -251,7 +285,7 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
/* Program traps generated by user-level software must be handled
* by the guest kernel. */
vcpu->arch.esr = vcpu->arch.fault_esr;
- kvmppc_queue_exception(vcpu, BOOKE_INTERRUPT_PROGRAM);
+ kvmppc_booke_queue_exception(vcpu, BOOKE_INTERRUPT_PROGRAM);
r = RESUME_GUEST;
break;
}
@@ -284,27 +318,27 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
break;
case BOOKE_INTERRUPT_FP_UNAVAIL:
- kvmppc_queue_exception(vcpu, exit_nr);
+ kvmppc_booke_queue_exception(vcpu, exit_nr);
r = RESUME_GUEST;
break;
case BOOKE_INTERRUPT_DATA_STORAGE:
vcpu->arch.dear = vcpu->arch.fault_dear;
vcpu->arch.esr = vcpu->arch.fault_esr;
- kvmppc_queue_exception(vcpu, exit_nr);
+ kvmppc_booke_queue_exception(vcpu, exit_nr);
vcpu->stat.dsi_exits++;
r = RESUME_GUEST;
break;
case BOOKE_INTERRUPT_INST_STORAGE:
vcpu->arch.esr = vcpu->arch.fault_esr;
- kvmppc_queue_exception(vcpu, exit_nr);
+ kvmppc_booke_queue_exception(vcpu, exit_nr);
vcpu->stat.isi_exits++;
r = RESUME_GUEST;
break;
case BOOKE_INTERRUPT_SYSCALL:
- kvmppc_queue_exception(vcpu, exit_nr);
+ kvmppc_booke_queue_exception(vcpu, exit_nr);
vcpu->stat.syscall_exits++;
r = RESUME_GUEST;
break;
@@ -318,7 +352,7 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
gtlbe = kvmppc_44x_dtlb_search(vcpu, eaddr);
if (!gtlbe) {
/* The guest didn't have a mapping for it. */
- kvmppc_queue_exception(vcpu, exit_nr);
+ kvmppc_booke_queue_exception(vcpu, exit_nr);
vcpu->arch.dear = vcpu->arch.fault_dear;
vcpu->arch.esr = vcpu->arch.fault_esr;
vcpu->stat.dtlb_real_miss_exits++;
@@ -360,7 +394,7 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
gtlbe = kvmppc_44x_itlb_search(vcpu, eaddr);
if (!gtlbe) {
/* The guest didn't have a mapping for it. */
- kvmppc_queue_exception(vcpu, exit_nr);
+ kvmppc_booke_queue_exception(vcpu, exit_nr);
vcpu->stat.itlb_real_miss_exits++;
break;
}
@@ -380,8 +414,7 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
gtlbe->word2);
} else {
/* Guest mapped and leaped at non-RAM! */
- kvmppc_queue_exception(vcpu,
- BOOKE_INTERRUPT_MACHINE_CHECK);
+ kvmppc_booke_queue_exception(vcpu, BOOKE_INTERRUPT_MACHINE_CHECK);
}
break;
@@ -409,7 +442,7 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
local_irq_disable();
- kvmppc_check_and_deliver_interrupts(vcpu);
+ kvmppc_core_deliver_interrupts(vcpu);
/* Do some exit accounting. */
vcpu->stat.sum_exits++;