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KVM: arm64: selftests: Add init ITS device test

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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
This commit is contained in:
Ricardo Koller 2021-10-04 18:19:21 -07:00 committed by Marc Zyngier
parent 1883458638
commit 3e197f17b2
1 changed files with 42 additions and 0 deletions
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42
tools/testing/selftests/kvm/aarch64/vgic_init.c
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@ -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();
}
}