Commit bebd8f3f authored by Ricardo Koller's avatar Ricardo Koller Committed by Marc Zyngier
Browse files

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: default avatarRicardo Koller <ricarkol@google.com>
Acked-by: default avatarAndrew Jones <drjones@redhat.com>
Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211109023906.1091208-17-ricarkol@google.com
parent 6a5a4718

tools/testing/selftests/kvm/aarch64/vgic_irq.c

+22 −0
Original line number Diff line number Diff line
@@ -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;

	}