forked from Minki/linux
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: Ricardo Koller <ricarkol@google.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Reviewed-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20211005011921.437353-12-ricarkol@google.com
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@ -598,6 +598,47 @@ static void test_v3_redist_ipa_range_check_at_vcpu_run(void)
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vm_gic_destroy(&v);
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}
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static void test_v3_its_region(void)
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{
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struct vm_gic v;
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uint64_t addr;
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int its_fd, ret;
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v = vm_gic_create_with_vcpus(KVM_DEV_TYPE_ARM_VGIC_V3, NR_VCPUS);
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its_fd = kvm_create_device(v.vm, KVM_DEV_TYPE_ARM_VGIC_ITS, false);
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addr = 0x401000;
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ret = _kvm_device_access(its_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,
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KVM_VGIC_ITS_ADDR_TYPE, &addr, true);
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TEST_ASSERT(ret && errno == EINVAL,
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"ITS region with misaligned address");
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addr = max_phys_size;
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ret = _kvm_device_access(its_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,
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KVM_VGIC_ITS_ADDR_TYPE, &addr, true);
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TEST_ASSERT(ret && errno == E2BIG,
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"register ITS region with base address beyond IPA range");
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addr = max_phys_size - 0x10000;
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ret = _kvm_device_access(its_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,
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KVM_VGIC_ITS_ADDR_TYPE, &addr, true);
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TEST_ASSERT(ret && errno == E2BIG,
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"Half of ITS region is beyond IPA range");
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/* This one succeeds setting the ITS base */
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addr = 0x400000;
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kvm_device_access(its_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,
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KVM_VGIC_ITS_ADDR_TYPE, &addr, true);
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addr = 0x300000;
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ret = _kvm_device_access(its_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,
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KVM_VGIC_ITS_ADDR_TYPE, &addr, true);
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TEST_ASSERT(ret && errno == EEXIST, "ITS base set again");
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close(its_fd);
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vm_gic_destroy(&v);
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}
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/*
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* Returns 0 if it's possible to create GIC device of a given type (V2 or V3).
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*/
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@ -650,6 +691,7 @@ void run_tests(uint32_t gic_dev_type)
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test_v3_last_bit_redist_regions();
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test_v3_last_bit_single_rdist();
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test_v3_redist_ipa_range_check_at_vcpu_run();
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test_v3_its_region();
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}
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}
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