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KVM: selftests: aarch64: Add ISPENDR write tests in vgic_irq 

Add injection tests that use writing into the ISPENDR register (to mark
IRQs as pending). This is typically used by migration code.

Signed-off-by: Ricardo Koller <ricarkol@google.com>
Acked-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211109023906.1091208-17-ricarkol@google.com
This commit is contained in:
Ricardo Koller 2021-11-08 18:39:05 -08:00 committed by Marc Zyngier
parent 6a5a47188c
commit bebd8f3f86
1 changed files with 22 additions and 0 deletions
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22
tools/testing/selftests/kvm/aarch64/vgic_irq.c
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@ -65,6 +65,7 @@ typedef enum {
KVM_SET_IRQ_LINE_HIGH,
KVM_SET_LEVEL_INFO_HIGH,
KVM_INJECT_IRQFD,
KVM_WRITE_ISPENDR,
} kvm_inject_cmd;
struct kvm_inject_args {
@ -105,6 +106,7 @@ static struct kvm_inject_desc inject_edge_fns[] = {
/* sgi ppi spi */
{ KVM_INJECT_EDGE_IRQ_LINE, false, false, true },
{ KVM_INJECT_IRQFD, false, false, true },
{ KVM_WRITE_ISPENDR, true, false, true },
{ 0, },
};
@ -113,6 +115,7 @@ static struct kvm_inject_desc inject_level_fns[] = {
{ KVM_SET_IRQ_LINE_HIGH, false, true, true },
{ KVM_SET_LEVEL_INFO_HIGH, false, true, true },
{ KVM_INJECT_IRQFD, false, false, true },
{ KVM_WRITE_ISPENDR, false, true, true },
{ 0, },
};
@ -495,6 +498,20 @@ static void kvm_set_gsi_routing_irqchip_check(struct kvm_vm *vm,
}
}
static void kvm_irq_write_ispendr_check(int gic_fd, uint32_t intid,
uint32_t vcpu, bool expect_failure)
{
/*
* Ignore this when expecting failure as invalid intids will lead to
* either trying to inject SGIs when we configured the test to be
* level_sensitive (or the reverse), or inject large intids which
* will lead to writing above the ISPENDR register space (and we
* don't want to do that either).
*/
if (!expect_failure)
kvm_irq_write_ispendr(gic_fd, intid, vcpu);
}
static void kvm_routing_and_irqfd_check(struct kvm_vm *vm,
uint32_t intid, uint32_t num, uint32_t kvm_max_routes,
bool expect_failure)
@ -597,6 +614,11 @@ static void run_guest_cmd(struct kvm_vm *vm, int gic_fd,
test_args->kvm_max_routes,
expect_failure);
break;
case KVM_WRITE_ISPENDR:
for (i = intid; i < intid + num; i++)
kvm_irq_write_ispendr_check(gic_fd, i,
VCPU_ID, expect_failure);
break;
default:
break;
}