diff options
Diffstat (limited to 'tools/testing/selftests/kvm/aarch64/vgic_init.c')
| -rw-r--r-- | tools/testing/selftests/kvm/aarch64/vgic_init.c | 551 |
1 files changed, 551 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/aarch64/vgic_init.c b/tools/testing/selftests/kvm/aarch64/vgic_init.c new file mode 100644 index 000000000000..623f31a14326 --- /dev/null +++ b/tools/testing/selftests/kvm/aarch64/vgic_init.c @@ -0,0 +1,551 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * vgic init sequence tests + * + * Copyright (C) 2020, Red Hat, Inc. + */ +#define _GNU_SOURCE +#include <linux/kernel.h> +#include <sys/syscall.h> +#include <asm/kvm.h> +#include <asm/kvm_para.h> + +#include "test_util.h" +#include "kvm_util.h" +#include "processor.h" + +#define NR_VCPUS 4 + +#define REDIST_REGION_ATTR_ADDR(count, base, flags, index) (((uint64_t)(count) << 52) | \ + ((uint64_t)((base) >> 16) << 16) | ((uint64_t)(flags) << 12) | index) +#define REG_OFFSET(vcpu, offset) (((uint64_t)vcpu << 32) | offset) + +#define GICR_TYPER 0x8 + +struct vm_gic { + struct kvm_vm *vm; + int gic_fd; +}; + +static int max_ipa_bits; + +/* helper to access a redistributor register */ +static int access_redist_reg(int gicv3_fd, int vcpu, int offset, + uint32_t *val, bool write) +{ + uint64_t attr = REG_OFFSET(vcpu, offset); + + return _kvm_device_access(gicv3_fd, KVM_DEV_ARM_VGIC_GRP_REDIST_REGS, + attr, val, write); +} + +/* dummy guest code */ +static void guest_code(void) +{ + GUEST_SYNC(0); + GUEST_SYNC(1); + GUEST_SYNC(2); + GUEST_DONE(); +} + +/* we don't want to assert on run execution, hence that helper */ +static int run_vcpu(struct kvm_vm *vm, uint32_t vcpuid) +{ + ucall_init(vm, NULL); + int ret = _vcpu_ioctl(vm, vcpuid, KVM_RUN, NULL); + if (ret) + return -errno; + return 0; +} + +static struct vm_gic vm_gic_create(void) +{ + struct vm_gic v; + + v.vm = vm_create_default_with_vcpus(NR_VCPUS, 0, 0, guest_code, NULL); + v.gic_fd = kvm_create_device(v.vm, KVM_DEV_TYPE_ARM_VGIC_V3, false); + + return v; +} + +static void vm_gic_destroy(struct vm_gic *v) +{ + close(v->gic_fd); + kvm_vm_free(v->vm); +} + +/** + * Helper routine that performs KVM device tests in general and + * especially ARM_VGIC_V3 ones. Eventually the ARM_VGIC_V3 + * device gets created, a legacy RDIST region is set at @0x0 + * and a DIST region is set @0x60000 + */ +static void subtest_dist_rdist(struct vm_gic *v) +{ + int ret; + uint64_t addr; + + /* Check existing group/attributes */ + kvm_device_check_attr(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_DIST); + + kvm_device_check_attr(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST); + + /* check non existing attribute */ + ret = _kvm_device_check_attr(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, 0); + TEST_ASSERT(ret && errno == ENXIO, "attribute not supported"); + + /* misaligned DIST and REDIST address settings */ + addr = 0x1000; + ret = _kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_DIST, &addr, true); + TEST_ASSERT(ret && errno == EINVAL, "GICv3 dist base not 64kB aligned"); + + ret = _kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST, &addr, true); + TEST_ASSERT(ret && errno == EINVAL, "GICv3 redist base not 64kB aligned"); + + /* out of range address */ + if (max_ipa_bits) { + addr = 1ULL << max_ipa_bits; + ret = _kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_DIST, &addr, true); + TEST_ASSERT(ret && errno == E2BIG, "dist address beyond IPA limit"); + + ret = _kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST, &addr, true); + TEST_ASSERT(ret && errno == E2BIG, "redist address beyond IPA limit"); + } + + /* set REDIST base address @0x0*/ + addr = 0x00000; + kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST, &addr, true); + + /* Attempt to create a second legacy redistributor region */ + addr = 0xE0000; + ret = _kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST, &addr, true); + TEST_ASSERT(ret && errno == EEXIST, "GICv3 redist base set again"); + + /* Attempt to mix legacy and new redistributor regions */ + addr = REDIST_REGION_ATTR_ADDR(NR_VCPUS, 0x100000, 0, 0); + ret = _kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &addr, true); + TEST_ASSERT(ret && errno == EINVAL, "attempt to mix GICv3 REDIST and REDIST_REGION"); + + /* + * Set overlapping DIST / REDIST, cannot be detected here. Will be detected + * on first vcpu run instead. + */ + addr = 3 * 2 * 0x10000; + kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, KVM_VGIC_V3_ADDR_TYPE_DIST, + &addr, true); +} + +/* Test the new REDIST region API */ +static void subtest_redist_regions(struct vm_gic *v) +{ + uint64_t addr, expected_addr; + int ret; + + ret = kvm_device_check_attr(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST); + TEST_ASSERT(!ret, "Multiple redist regions advertised"); + + addr = REDIST_REGION_ATTR_ADDR(NR_VCPUS, 0x100000, 2, 0); + ret = _kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &addr, true); + TEST_ASSERT(ret && errno == EINVAL, "redist region attr value with flags != 0"); + + addr = REDIST_REGION_ATTR_ADDR(0, 0x100000, 0, 0); + ret = _kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &addr, true); + TEST_ASSERT(ret && errno == EINVAL, "redist region attr value with count== 0"); + + addr = REDIST_REGION_ATTR_ADDR(2, 0x200000, 0, 1); + ret = _kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &addr, true); + TEST_ASSERT(ret && errno == EINVAL, + "attempt to register the first rdist region with index != 0"); + + addr = REDIST_REGION_ATTR_ADDR(2, 0x201000, 0, 1); + ret = _kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &addr, true); + TEST_ASSERT(ret && errno == EINVAL, "rdist region with misaligned address"); + + addr = REDIST_REGION_ATTR_ADDR(2, 0x200000, 0, 0); + kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &addr, true); + + addr = REDIST_REGION_ATTR_ADDR(2, 0x200000, 0, 1); + ret = _kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &addr, true); + TEST_ASSERT(ret && errno == EINVAL, "register an rdist region with already used index"); + + addr = REDIST_REGION_ATTR_ADDR(1, 0x210000, 0, 2); + ret = _kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &addr, true); + TEST_ASSERT(ret && errno == EINVAL, + "register an rdist region overlapping with another one"); + + addr = REDIST_REGION_ATTR_ADDR(1, 0x240000, 0, 2); + ret = _kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &addr, true); + TEST_ASSERT(ret && errno == EINVAL, "register redist region with index not +1"); + + addr = REDIST_REGION_ATTR_ADDR(1, 0x240000, 0, 1); + kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &addr, true); + + addr = REDIST_REGION_ATTR_ADDR(1, 1ULL << max_ipa_bits, 0, 2); + ret = _kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &addr, true); + TEST_ASSERT(ret && errno == E2BIG, + "register redist region with base address beyond IPA range"); + + addr = 0x260000; + ret = _kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST, &addr, true); + TEST_ASSERT(ret && errno == EINVAL, + "Mix KVM_VGIC_V3_ADDR_TYPE_REDIST and REDIST_REGION"); + + /* + * Now there are 2 redist regions: + * region 0 @ 0x200000 2 redists + * region 1 @ 0x240000 1 redist + * Attempt to read their characteristics + */ + + addr = REDIST_REGION_ATTR_ADDR(0, 0, 0, 0); + expected_addr = REDIST_REGION_ATTR_ADDR(2, 0x200000, 0, 0); + ret = _kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &addr, false); + TEST_ASSERT(!ret && addr == expected_addr, "read characteristics of region #0"); + + addr = REDIST_REGION_ATTR_ADDR(0, 0, 0, 1); + expected_addr = REDIST_REGION_ATTR_ADDR(1, 0x240000, 0, 1); + ret = _kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &addr, false); + TEST_ASSERT(!ret && addr == expected_addr, "read characteristics of region #1"); + + addr = REDIST_REGION_ATTR_ADDR(0, 0, 0, 2); + ret = _kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &addr, false); + TEST_ASSERT(ret && errno == ENOENT, "read characteristics of non existing region"); + + addr = 0x260000; + kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_DIST, &addr, true); + + addr = REDIST_REGION_ATTR_ADDR(1, 0x260000, 0, 2); + ret = _kvm_device_access(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &addr, true); + TEST_ASSERT(ret && errno == EINVAL, "register redist region colliding with dist"); +} + +/* + * VGIC KVM device is created and initialized before the secondary CPUs + * get created + */ +static void test_vgic_then_vcpus(void) +{ + struct vm_gic v; + int ret, i; + + v.vm = vm_create_default(0, 0, guest_code); + v.gic_fd = kvm_create_device(v.vm, KVM_DEV_TYPE_ARM_VGIC_V3, false); + + subtest_dist_rdist(&v); + + /* Add the rest of the VCPUs */ + for (i = 1; i < NR_VCPUS; ++i) + vm_vcpu_add_default(v.vm, i, guest_code); + + ret = run_vcpu(v.vm, 3); + TEST_ASSERT(ret == -EINVAL, "dist/rdist overlap detected on 1st vcpu run"); + + vm_gic_destroy(&v); +} + +/* All the VCPUs are created before the VGIC KVM device gets initialized */ +static void test_vcpus_then_vgic(void) +{ + struct vm_gic v; + int ret; + + v = vm_gic_create(); + + subtest_dist_rdist(&v); + + ret = run_vcpu(v.vm, 3); + TEST_ASSERT(ret == -EINVAL, "dist/rdist overlap detected on 1st vcpu run"); + + vm_gic_destroy(&v); +} + +static void test_new_redist_regions(void) +{ + void *dummy = NULL; + struct vm_gic v; + uint64_t addr; + int ret; + + v = vm_gic_create(); + subtest_redist_regions(&v); + kvm_device_access(v.gic_fd, KVM_DEV_ARM_VGIC_GRP_CTRL, + KVM_DEV_ARM_VGIC_CTRL_INIT, NULL, true); + + ret = run_vcpu(v.vm, 3); + TEST_ASSERT(ret == -ENXIO, "running without sufficient number of rdists"); + vm_gic_destroy(&v); + + /* step2 */ + + v = vm_gic_create(); + subtest_redist_regions(&v); + + addr = REDIST_REGION_ATTR_ADDR(1, 0x280000, 0, 2); + kvm_device_access(v.gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &addr, true); + + ret = run_vcpu(v.vm, 3); + TEST_ASSERT(ret == -EBUSY, "running without vgic explicit init"); + + vm_gic_destroy(&v); + + /* step 3 */ + + v = vm_gic_create(); + subtest_redist_regions(&v); + + _kvm_device_access(v.gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, dummy, true); + TEST_ASSERT(ret && errno == EFAULT, + "register a third region allowing to cover the 4 vcpus"); + + addr = REDIST_REGION_ATTR_ADDR(1, 0x280000, 0, 2); + kvm_device_access(v.gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &addr, true); + + kvm_device_access(v.gic_fd, KVM_DEV_ARM_VGIC_GRP_CTRL, + KVM_DEV_ARM_VGIC_CTRL_INIT, NULL, true); + + ret = run_vcpu(v.vm, 3); + TEST_ASSERT(!ret, "vcpu run"); + + vm_gic_destroy(&v); +} + +static void test_typer_accesses(void) +{ + struct vm_gic v; + uint64_t addr; + uint32_t val; + int ret, i; + + v.vm = vm_create_default(0, 0, guest_code); + + v.gic_fd = kvm_create_device(v.vm, KVM_DEV_TYPE_ARM_VGIC_V3, false); + + vm_vcpu_add_default(v.vm, 3, guest_code); + + ret = access_redist_reg(v.gic_fd, 1, GICR_TYPER, &val, false); + TEST_ASSERT(ret && errno == EINVAL, "attempting to read GICR_TYPER of non created vcpu"); + + vm_vcpu_add_default(v.vm, 1, guest_code); + + ret = access_redist_reg(v.gic_fd, 1, GICR_TYPER, &val, false); + TEST_ASSERT(ret && errno == EBUSY, "read GICR_TYPER before GIC initialized"); + + vm_vcpu_add_default(v.vm, 2, guest_code); + + kvm_device_access(v.gic_fd, KVM_DEV_ARM_VGIC_GRP_CTRL, + KVM_DEV_ARM_VGIC_CTRL_INIT, NULL, true); + + for (i = 0; i < NR_VCPUS ; i++) { + ret = access_redist_reg(v.gic_fd, 0, GICR_TYPER, &val, false); + TEST_ASSERT(!ret && !val, "read GICR_TYPER before rdist region setting"); + } + + addr = REDIST_REGION_ATTR_ADDR(2, 0x200000, 0, 0); + kvm_device_access(v.gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &addr, true); + + /* The 2 first rdists should be put there (vcpu 0 and 3) */ + ret = access_redist_reg(v.gic_fd, 0, GICR_TYPER, &val, false); + TEST_ASSERT(!ret && !val, "read typer of rdist #0"); + + ret = access_redist_reg(v.gic_fd, 3, GICR_TYPER, &val, false); + TEST_ASSERT(!ret && val == 0x310, "read typer of rdist #1"); + + addr = REDIST_REGION_ATTR_ADDR(10, 0x100000, 0, 1); + ret = _kvm_device_access(v.gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &addr, true); + TEST_ASSERT(ret && errno == EINVAL, "collision with previous rdist region"); + + ret = access_redist_reg(v.gic_fd, 1, GICR_TYPER, &val, false); + TEST_ASSERT(!ret && val == 0x100, + "no redist region attached to vcpu #1 yet, last cannot be returned"); + + ret = access_redist_reg(v.gic_fd, 2, GICR_TYPER, &val, false); + TEST_ASSERT(!ret && val == 0x200, + "no redist region attached to vcpu #2, last cannot be returned"); + + addr = REDIST_REGION_ATTR_ADDR(10, 0x20000, 0, 1); + kvm_device_access(v.gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &addr, true); + + ret = access_redist_reg(v.gic_fd, 1, GICR_TYPER, &val, false); + TEST_ASSERT(!ret && val == 0x100, "read typer of rdist #1"); + + ret = access_redist_reg(v.gic_fd, 2, GICR_TYPER, &val, false); + TEST_ASSERT(!ret && val == 0x210, + "read typer of rdist #1, last properly returned"); + + vm_gic_destroy(&v); +} + +/** + * Test GICR_TYPER last bit with new redist regions + * rdist regions #1 and #2 are contiguous + * rdist region #0 @0x100000 2 rdist capacity + * rdists: 0, 3 (Last) + * rdist region #1 @0x240000 2 rdist capacity + * rdists: 5, 4 (Last) + * rdist region #2 @0x200000 2 rdist capacity + * rdists: 1, 2 + */ +static void test_last_bit_redist_regions(void) +{ + uint32_t vcpuids[] = { 0, 3, 5, 4, 1, 2 }; + struct vm_gic v; + uint64_t addr; + uint32_t val; + int ret; + + v.vm = vm_create_default_with_vcpus(6, 0, 0, guest_code, vcpuids); + + v.gic_fd = kvm_create_device(v.vm, KVM_DEV_TYPE_ARM_VGIC_V3, false); + + kvm_device_access(v.gic_fd, KVM_DEV_ARM_VGIC_GRP_CTRL, + KVM_DEV_ARM_VGIC_CTRL_INIT, NULL, true); + + addr = REDIST_REGION_ATTR_ADDR(2, 0x100000, 0, 0); + kvm_device_access(v.gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &addr, true); + + addr = REDIST_REGION_ATTR_ADDR(2, 0x240000, 0, 1); + kvm_device_access(v.gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &addr, true); + + addr = REDIST_REGION_ATTR_ADDR(2, 0x200000, 0, 2); + kvm_device_access(v.gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &addr, true); + + ret = access_redist_reg(v.gic_fd, 0, GICR_TYPER, &val, false); + TEST_ASSERT(!ret && val == 0x000, "read typer of rdist #0"); + + ret = access_redist_reg(v.gic_fd, 1, GICR_TYPER, &val, false); + TEST_ASSERT(!ret && val == 0x100, "read typer of rdist #1"); + + ret = access_redist_reg(v.gic_fd, 2, GICR_TYPER, &val, false); + TEST_ASSERT(!ret && val == 0x200, "read typer of rdist #2"); + + ret = access_redist_reg(v.gic_fd, 3, GICR_TYPER, &val, false); + TEST_ASSERT(!ret && val == 0x310, "read typer of rdist #3"); + + ret = access_redist_reg(v.gic_fd, 5, GICR_TYPER, &val, false); + TEST_ASSERT(!ret && val == 0x500, "read typer of rdist #5"); + + ret = access_redist_reg(v.gic_fd, 4, GICR_TYPER, &val, false); + TEST_ASSERT(!ret && val == 0x410, "read typer of rdist #4"); + + vm_gic_destroy(&v); +} + +/* Test last bit with legacy region */ +static void test_last_bit_single_rdist(void) +{ + uint32_t vcpuids[] = { 0, 3, 5, 4, 1, 2 }; + struct vm_gic v; + uint64_t addr; + uint32_t val; + int ret; + + v.vm = vm_create_default_with_vcpus(6, 0, 0, guest_code, vcpuids); + + v.gic_fd = kvm_create_device(v.vm, KVM_DEV_TYPE_ARM_VGIC_V3, false); + + kvm_device_access(v.gic_fd, KVM_DEV_ARM_VGIC_GRP_CTRL, + KVM_DEV_ARM_VGIC_CTRL_INIT, NULL, true); + + addr = 0x10000; + kvm_device_access(v.gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST, &addr, true); + + ret = access_redist_reg(v.gic_fd, 0, GICR_TYPER, &val, false); + TEST_ASSERT(!ret && val == 0x000, "read typer of rdist #0"); + + ret = access_redist_reg(v.gic_fd, 3, GICR_TYPER, &val, false); + TEST_ASSERT(!ret && val == 0x300, "read typer of rdist #1"); + + ret = access_redist_reg(v.gic_fd, 5, GICR_TYPER, &val, false); + TEST_ASSERT(!ret && val == 0x500, "read typer of rdist #2"); + + ret = access_redist_reg(v.gic_fd, 1, GICR_TYPER, &val, false); + TEST_ASSERT(!ret && val == 0x100, "read typer of rdist #3"); + + ret = access_redist_reg(v.gic_fd, 2, GICR_TYPER, &val, false); + TEST_ASSERT(!ret && val == 0x210, "read typer of rdist #3"); + + vm_gic_destroy(&v); +} + +void test_kvm_device(void) +{ + struct vm_gic v; + int ret, fd; + + v.vm = vm_create_default_with_vcpus(NR_VCPUS, 0, 0, guest_code, NULL); + + /* try to create a non existing KVM device */ + ret = _kvm_create_device(v.vm, 0, true, &fd); + TEST_ASSERT(ret && errno == ENODEV, "unsupported device"); + + /* trial mode with VGIC_V3 device */ + ret = _kvm_create_device(v.vm, KVM_DEV_TYPE_ARM_VGIC_V3, true, &fd); + if (ret) { + print_skip("GICv3 not supported"); + exit(KSFT_SKIP); + } + v.gic_fd = kvm_create_device(v.vm, KVM_DEV_TYPE_ARM_VGIC_V3, false); + + ret = _kvm_create_device(v.vm, KVM_DEV_TYPE_ARM_VGIC_V3, false, &fd); + TEST_ASSERT(ret && errno == EEXIST, "create GICv3 device twice"); + + kvm_create_device(v.vm, KVM_DEV_TYPE_ARM_VGIC_V3, true); + + if (!_kvm_create_device(v.vm, KVM_DEV_TYPE_ARM_VGIC_V2, true, &fd)) { + ret = _kvm_create_device(v.vm, KVM_DEV_TYPE_ARM_VGIC_V2, false, &fd); + TEST_ASSERT(ret && errno == EINVAL, "create GICv2 while v3 exists"); + } + + vm_gic_destroy(&v); +} + +int main(int ac, char **av) +{ + max_ipa_bits = kvm_check_cap(KVM_CAP_ARM_VM_IPA_SIZE); + + test_kvm_device(); + test_vcpus_then_vgic(); + test_vgic_then_vcpus(); + test_new_redist_regions(); + test_typer_accesses(); + test_last_bit_redist_regions(); + test_last_bit_single_rdist(); + + return 0; +} |