xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

KVM: ppc: Refactor powerpc.c to relocate 440-specific code

Browse Source 
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>
This commit is contained in:
Hollis Blanchard
2008-11-05 09:36:14 -06:00
committed by Avi Kivity
parent d9fbd03d24
commit 9dd921cfea
9 changed files with 207 additions and 130 deletions
Download Patch File Download Diff File Expand all files Collapse all files

61
arch/powerpc/kvm/booke.c
View File

@@ -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++;