diff options
20 files changed, 20 insertions, 76 deletions
diff --git a/tools/testing/selftests/kvm/aarch64/aarch32_id_regs.c b/tools/testing/selftests/kvm/aarch64/aarch32_id_regs.c index 6f9c1f19c7f6..03f6b3af6b4d 100644 --- a/tools/testing/selftests/kvm/aarch64/aarch32_id_regs.c +++ b/tools/testing/selftests/kvm/aarch64/aarch32_id_regs.c @@ -158,8 +158,6 @@ int main(void) TEST_REQUIRE(vcpu_aarch64_only(vcpu)); - ucall_init(vm, NULL); - test_user_raz_wi(vcpu); test_user_raz_invariant(vcpu); test_guest_raz(vcpu); diff --git a/tools/testing/selftests/kvm/aarch64/arch_timer.c b/tools/testing/selftests/kvm/aarch64/arch_timer.c index 9409617fce9c..54016cdd8a09 100644 --- a/tools/testing/selftests/kvm/aarch64/arch_timer.c +++ b/tools/testing/selftests/kvm/aarch64/arch_timer.c @@ -375,7 +375,6 @@ static struct kvm_vm *test_vm_create(void) for (i = 0; i < nr_vcpus; i++) vcpu_init_descriptor_tables(vcpus[i]); - ucall_init(vm, NULL); test_init_timer_irq(vm); gic_fd = vgic_v3_setup(vm, nr_vcpus, 64, GICD_BASE_GPA, GICR_BASE_GPA); __TEST_REQUIRE(gic_fd >= 0, "Failed to create vgic-v3"); diff --git a/tools/testing/selftests/kvm/aarch64/debug-exceptions.c b/tools/testing/selftests/kvm/aarch64/debug-exceptions.c index a3c2216b65fb..d86c4e4d1c82 100644 --- a/tools/testing/selftests/kvm/aarch64/debug-exceptions.c +++ b/tools/testing/selftests/kvm/aarch64/debug-exceptions.c @@ -292,7 +292,6 @@ static void test_guest_debug_exceptions(void) int stage; vm = vm_create_with_one_vcpu(&vcpu, guest_code); - ucall_init(vm, NULL); vm_init_descriptor_tables(vm); vcpu_init_descriptor_tables(vcpu); @@ -343,7 +342,6 @@ void test_single_step_from_userspace(int test_cnt) struct kvm_guest_debug debug = {}; vm = vm_create_with_one_vcpu(&vcpu, guest_code_ss); - ucall_init(vm, NULL); run = vcpu->run; vcpu_args_set(vcpu, 1, test_cnt); diff --git a/tools/testing/selftests/kvm/aarch64/hypercalls.c b/tools/testing/selftests/kvm/aarch64/hypercalls.c index a39da3fe4952..3dceecfd1f62 100644 --- a/tools/testing/selftests/kvm/aarch64/hypercalls.c +++ b/tools/testing/selftests/kvm/aarch64/hypercalls.c @@ -236,7 +236,6 @@ static struct kvm_vm *test_vm_create(struct kvm_vcpu **vcpu) vm = vm_create_with_one_vcpu(vcpu, guest_code); - ucall_init(vm, NULL); steal_time_init(*vcpu); return vm; diff --git a/tools/testing/selftests/kvm/aarch64/psci_test.c b/tools/testing/selftests/kvm/aarch64/psci_test.c index e0b9e81a3e09..cfa36f387948 100644 --- a/tools/testing/selftests/kvm/aarch64/psci_test.c +++ b/tools/testing/selftests/kvm/aarch64/psci_test.c @@ -79,7 +79,6 @@ static struct kvm_vm *setup_vm(void *guest_code, struct kvm_vcpu **source, struct kvm_vm *vm; vm = vm_create(2); - ucall_init(vm, NULL); vm_ioctl(vm, KVM_ARM_PREFERRED_TARGET, &init); init.features[0] |= (1 << KVM_ARM_VCPU_PSCI_0_2); diff --git a/tools/testing/selftests/kvm/aarch64/vgic_init.c b/tools/testing/selftests/kvm/aarch64/vgic_init.c index 9c131d977a1b..eef816b80993 100644 --- a/tools/testing/selftests/kvm/aarch64/vgic_init.c +++ b/tools/testing/selftests/kvm/aarch64/vgic_init.c @@ -68,8 +68,6 @@ static void guest_code(void) /* we don't want to assert on run execution, hence that helper */ static int run_vcpu(struct kvm_vcpu *vcpu) { - ucall_init(vcpu->vm, NULL); - return __vcpu_run(vcpu) ? -errno : 0; } diff --git a/tools/testing/selftests/kvm/aarch64/vgic_irq.c b/tools/testing/selftests/kvm/aarch64/vgic_irq.c index 4ead42a072b7..e0310ebc313c 100644 --- a/tools/testing/selftests/kvm/aarch64/vgic_irq.c +++ b/tools/testing/selftests/kvm/aarch64/vgic_irq.c @@ -756,7 +756,6 @@ static void test_vgic(uint32_t nr_irqs, bool level_sensitive, bool eoi_split) print_args(&args); vm = vm_create_with_one_vcpu(&vcpu, guest_code); - ucall_init(vm, NULL); vm_init_descriptor_tables(vm); vcpu_init_descriptor_tables(vcpu); diff --git a/tools/testing/selftests/kvm/dirty_log_test.c b/tools/testing/selftests/kvm/dirty_log_test.c index b5234d6efbe1..b458a2701634 100644 --- a/tools/testing/selftests/kvm/dirty_log_test.c +++ b/tools/testing/selftests/kvm/dirty_log_test.c @@ -756,8 +756,6 @@ static void run_test(enum vm_guest_mode mode, void *arg) /* Cache the HVA pointer of the region */ host_test_mem = addr_gpa2hva(vm, (vm_paddr_t)guest_test_phys_mem); - ucall_init(vm, NULL); - /* Export the shared variables to the guest */ sync_global_to_guest(vm, host_page_size); sync_global_to_guest(vm, guest_page_size); diff --git a/tools/testing/selftests/kvm/include/ucall_common.h b/tools/testing/selftests/kvm/include/ucall_common.h index 63bfc60be995..8077a6d8b1ba 100644 --- a/tools/testing/selftests/kvm/include/ucall_common.h +++ b/tools/testing/selftests/kvm/include/ucall_common.h @@ -24,7 +24,7 @@ struct ucall { uint64_t args[UCALL_MAX_ARGS]; }; -void ucall_arch_init(struct kvm_vm *vm, void *arg); +void ucall_arch_init(struct kvm_vm *vm, vm_paddr_t mmio_gpa); void ucall_arch_uninit(struct kvm_vm *vm); void ucall_arch_do_ucall(vm_vaddr_t uc); void *ucall_arch_get_ucall(struct kvm_vcpu *vcpu); @@ -32,9 +32,9 @@ void *ucall_arch_get_ucall(struct kvm_vcpu *vcpu); void ucall(uint64_t cmd, int nargs, ...); uint64_t get_ucall(struct kvm_vcpu *vcpu, struct ucall *uc); -static inline void ucall_init(struct kvm_vm *vm, void *arg) +static inline void ucall_init(struct kvm_vm *vm, vm_paddr_t mmio_gpa) { - ucall_arch_init(vm, arg); + ucall_arch_init(vm, mmio_gpa); } static inline void ucall_uninit(struct kvm_vm *vm) diff --git a/tools/testing/selftests/kvm/kvm_page_table_test.c b/tools/testing/selftests/kvm/kvm_page_table_test.c index 696b366be06b..3db32d56787e 100644 --- a/tools/testing/selftests/kvm/kvm_page_table_test.c +++ b/tools/testing/selftests/kvm/kvm_page_table_test.c @@ -289,7 +289,6 @@ static struct kvm_vm *pre_init_before_test(enum vm_guest_mode mode, void *arg) host_test_mem = addr_gpa2hva(vm, (vm_paddr_t)guest_test_phys_mem); /* Export shared structure test_args to guest */ - ucall_init(vm, NULL); sync_global_to_guest(vm, test_args); ret = sem_init(&test_stage_updated, 0, 0); diff --git a/tools/testing/selftests/kvm/lib/aarch64/ucall.c b/tools/testing/selftests/kvm/lib/aarch64/ucall.c index f214f5cc53d3..f02ae27c3e43 100644 --- a/tools/testing/selftests/kvm/lib/aarch64/ucall.c +++ b/tools/testing/selftests/kvm/lib/aarch64/ucall.c @@ -8,60 +8,12 @@ static vm_vaddr_t *ucall_exit_mmio_addr; -static bool ucall_mmio_init(struct kvm_vm *vm, vm_paddr_t gpa) +void ucall_arch_init(struct kvm_vm *vm, vm_paddr_t mmio_gpa) { - if (kvm_userspace_memory_region_find(vm, gpa, gpa + 1)) - return false; + virt_pg_map(vm, mmio_gpa, mmio_gpa); - virt_pg_map(vm, gpa, gpa); - - ucall_exit_mmio_addr = (vm_vaddr_t *)gpa; + ucall_exit_mmio_addr = (vm_vaddr_t *)mmio_gpa; sync_global_to_guest(vm, ucall_exit_mmio_addr); - - return true; -} - -void ucall_arch_init(struct kvm_vm *vm, void *arg) -{ - vm_paddr_t gpa, start, end, step, offset; - unsigned int bits; - bool ret; - - if (arg) { - gpa = (vm_paddr_t)arg; - ret = ucall_mmio_init(vm, gpa); - TEST_ASSERT(ret, "Can't set ucall mmio address to %lx", gpa); - return; - } - - /* - * Find an address within the allowed physical and virtual address - * spaces, that does _not_ have a KVM memory region associated with - * it. Identity mapping an address like this allows the guest to - * access it, but as KVM doesn't know what to do with it, it - * will assume it's something userspace handles and exit with - * KVM_EXIT_MMIO. Well, at least that's how it works for AArch64. - * Here we start with a guess that the addresses around 5/8th - * of the allowed space are unmapped and then work both down and - * up from there in 1/16th allowed space sized steps. - * - * Note, we need to use VA-bits - 1 when calculating the allowed - * virtual address space for an identity mapping because the upper - * half of the virtual address space is the two's complement of the - * lower and won't match physical addresses. - */ - bits = vm->va_bits - 1; - bits = min(vm->pa_bits, bits); - end = 1ul << bits; - start = end * 5 / 8; - step = end / 16; - for (offset = 0; offset < end - start; offset += step) { - if (ucall_mmio_init(vm, start - offset)) - return; - if (ucall_mmio_init(vm, start + offset)) - return; - } - TEST_FAIL("Can't find a ucall mmio address"); } void ucall_arch_uninit(struct kvm_vm *vm) diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c index 3b7710fb3784..07c8edd4e548 100644 --- a/tools/testing/selftests/kvm/lib/kvm_util.c +++ b/tools/testing/selftests/kvm/lib/kvm_util.c @@ -335,15 +335,26 @@ struct kvm_vm *__vm_create(enum vm_guest_mode mode, uint32_t nr_runnable_vcpus, { uint64_t nr_pages = vm_nr_pages_required(mode, nr_runnable_vcpus, nr_extra_pages); + struct userspace_mem_region *slot0; struct kvm_vm *vm; vm = ____vm_create(mode, nr_pages); kvm_vm_elf_load(vm, program_invocation_name); + /* + * TODO: Add proper defines to protect the library's memslots, and then + * carve out memslot1 for the ucall MMIO address. KVM treats writes to + * read-only memslots as MMIO, and creating a read-only memslot for the + * MMIO region would prevent silently clobbering the MMIO region. + */ + slot0 = memslot2region(vm, 0); + ucall_init(vm, slot0->region.guest_phys_addr + slot0->region.memory_size); + #ifdef __x86_64__ vm_create_irqchip(vm); #endif + return vm; } diff --git a/tools/testing/selftests/kvm/lib/memstress.c b/tools/testing/selftests/kvm/lib/memstress.c index 503da78c558d..b66404e56a3f 100644 --- a/tools/testing/selftests/kvm/lib/memstress.c +++ b/tools/testing/selftests/kvm/lib/memstress.c @@ -221,8 +221,6 @@ struct kvm_vm *memstress_create_vm(enum vm_guest_mode mode, int nr_vcpus, memstress_setup_nested(vm, nr_vcpus, vcpus); } - ucall_init(vm, NULL); - /* Export the shared variables to the guest. */ sync_global_to_guest(vm, memstress_args); diff --git a/tools/testing/selftests/kvm/lib/riscv/ucall.c b/tools/testing/selftests/kvm/lib/riscv/ucall.c index 37e091d4366e..c58ecb8a0981 100644 --- a/tools/testing/selftests/kvm/lib/riscv/ucall.c +++ b/tools/testing/selftests/kvm/lib/riscv/ucall.c @@ -10,7 +10,7 @@ #include "kvm_util.h" #include "processor.h" -void ucall_arch_init(struct kvm_vm *vm, void *arg) +void ucall_arch_init(struct kvm_vm *vm, vm_paddr_t mmio_gpa) { } diff --git a/tools/testing/selftests/kvm/lib/s390x/ucall.c b/tools/testing/selftests/kvm/lib/s390x/ucall.c index 0f695a031d35..208f0f04299b 100644 --- a/tools/testing/selftests/kvm/lib/s390x/ucall.c +++ b/tools/testing/selftests/kvm/lib/s390x/ucall.c @@ -6,7 +6,7 @@ */ #include "kvm_util.h" -void ucall_arch_init(struct kvm_vm *vm, void *arg) +void ucall_arch_init(struct kvm_vm *vm, vm_paddr_t mmio_gpa) { } diff --git a/tools/testing/selftests/kvm/lib/x86_64/ucall.c b/tools/testing/selftests/kvm/lib/x86_64/ucall.c index ead9946399ab..016a0487cf72 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/ucall.c +++ b/tools/testing/selftests/kvm/lib/x86_64/ucall.c @@ -8,7 +8,7 @@ #define UCALL_PIO_PORT ((uint16_t)0x1000) -void ucall_arch_init(struct kvm_vm *vm, void *arg) +void ucall_arch_init(struct kvm_vm *vm, vm_paddr_t mmio_gpa) { } diff --git a/tools/testing/selftests/kvm/memslot_perf_test.c b/tools/testing/selftests/kvm/memslot_perf_test.c index 330aaef1c02f..d771262ea584 100644 --- a/tools/testing/selftests/kvm/memslot_perf_test.c +++ b/tools/testing/selftests/kvm/memslot_perf_test.c @@ -277,7 +277,6 @@ static bool prepare_vm(struct vm_data *data, int nslots, uint64_t *maxslots, TEST_ASSERT(data->hva_slots, "malloc() fail"); data->vm = __vm_create_with_one_vcpu(&data->vcpu, mempages, guest_code); - ucall_init(data->vm, NULL); pr_info_v("Adding slots 1..%i, each slot with %"PRIu64" pages + %"PRIu64" extra pages last\n", max_mem_slots - 1, data->pages_per_slot, rempages); diff --git a/tools/testing/selftests/kvm/rseq_test.c b/tools/testing/selftests/kvm/rseq_test.c index 6f88da7e60be..0e9e2b48a51f 100644 --- a/tools/testing/selftests/kvm/rseq_test.c +++ b/tools/testing/selftests/kvm/rseq_test.c @@ -224,7 +224,6 @@ int main(int argc, char *argv[]) * CPU affinity. */ vm = vm_create_with_one_vcpu(&vcpu, guest_code); - ucall_init(vm, NULL); pthread_create(&migration_thread, NULL, migration_worker, (void *)(unsigned long)syscall(SYS_gettid)); diff --git a/tools/testing/selftests/kvm/steal_time.c b/tools/testing/selftests/kvm/steal_time.c index db8967f1a17b..c87f38712073 100644 --- a/tools/testing/selftests/kvm/steal_time.c +++ b/tools/testing/selftests/kvm/steal_time.c @@ -266,7 +266,6 @@ int main(int ac, char **av) gpages = vm_calc_num_guest_pages(VM_MODE_DEFAULT, STEAL_TIME_SIZE * NR_VCPUS); vm_userspace_mem_region_add(vm, VM_MEM_SRC_ANONYMOUS, ST_GPA_BASE, 1, gpages, 0); virt_map(vm, ST_GPA_BASE, ST_GPA_BASE, gpages); - ucall_init(vm, NULL); TEST_REQUIRE(is_steal_time_supported(vcpus[0])); diff --git a/tools/testing/selftests/kvm/system_counter_offset_test.c b/tools/testing/selftests/kvm/system_counter_offset_test.c index 1c274933912b..7f5b330b6a1b 100644 --- a/tools/testing/selftests/kvm/system_counter_offset_test.c +++ b/tools/testing/selftests/kvm/system_counter_offset_test.c @@ -121,7 +121,6 @@ int main(void) vm = vm_create_with_one_vcpu(&vcpu, guest_main); check_preconditions(vcpu); - ucall_init(vm, NULL); enter_guest(vcpu); kvm_vm_free(vm); |