Commit 3e197f17 authored by Ricardo Koller's avatar Ricardo Koller Committed by Marc Zyngier
Browse files

KVM: arm64: selftests: Add init ITS device test 



Add some ITS device init tests: general KVM device tests (address not
defined already, address aligned) and tests for the ITS region being
within the addressable IPA range.

Signed-off-by: default avatarRicardo Koller <ricarkol@google.com>
Reviewed-by: default avatarEric Auger <eric.auger@redhat.com>
Reviewed-by: default avatarAndrew Jones <drjones@redhat.com>
Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211005011921.437353-12-ricarkol@google.com
parent 18834586

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

+42 −0
Original line number Diff line number Diff line
@@ -598,6 +598,47 @@ static void test_v3_redist_ipa_range_check_at_vcpu_run(void) 
	vm_gic_destroy(&v);

}



static void test_v3_its_region(void)

{

	struct vm_gic v;

	uint64_t addr;

	int its_fd, ret;



	v = vm_gic_create_with_vcpus(KVM_DEV_TYPE_ARM_VGIC_V3, NR_VCPUS);

	its_fd = kvm_create_device(v.vm, KVM_DEV_TYPE_ARM_VGIC_ITS, false);



	addr = 0x401000;

	ret = _kvm_device_access(its_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,

			  KVM_VGIC_ITS_ADDR_TYPE, &addr, true);

	TEST_ASSERT(ret && errno == EINVAL,

		"ITS region with misaligned address");



	addr = max_phys_size;

	ret = _kvm_device_access(its_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,

			  KVM_VGIC_ITS_ADDR_TYPE, &addr, true);

	TEST_ASSERT(ret && errno == E2BIG,

		"register ITS region with base address beyond IPA range");



	addr = max_phys_size - 0x10000;

	ret = _kvm_device_access(its_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,

			  KVM_VGIC_ITS_ADDR_TYPE, &addr, true);

	TEST_ASSERT(ret && errno == E2BIG,

		"Half of ITS region is beyond IPA range");



	/* This one succeeds setting the ITS base */

	addr = 0x400000;

	kvm_device_access(its_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,

			  KVM_VGIC_ITS_ADDR_TYPE, &addr, true);



	addr = 0x300000;

	ret = _kvm_device_access(its_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,

			  KVM_VGIC_ITS_ADDR_TYPE, &addr, true);

	TEST_ASSERT(ret && errno == EEXIST, "ITS base set again");



	close(its_fd);

	vm_gic_destroy(&v);

}



/*

 * Returns 0 if it's possible to create GIC device of a given type (V2 or V3).

 */
@@ -650,6 +691,7 @@ void run_tests(uint32_t gic_dev_type) 
		test_v3_last_bit_redist_regions();

		test_v3_last_bit_single_rdist();

		test_v3_redist_ipa_range_check_at_vcpu_run();

		test_v3_its_region();

	}

}