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KVM: selftests: Convert vmx_set_nested_state_test away from VCPU_ID

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Convert vmx_set_nested_state_test to use vm_create_with_one_vcpu() and
pass around a 'struct kvm_vcpu' object instead of using a global VCPU_ID.
Note, this is a "functional" change in the sense that the test now
creates a vCPU with vcpu_id==0 instead of vcpu_id==5.  The non-zero
VCPU_ID was 100% arbitrary and added little to no validation coverage.
If testing non-zero vCPU IDs is desirable for generic tests, that can be
done in the future by tweaking the VM creation helpers.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson 2022-02-15 13:56:58 -08:00 committed by Paolo Bonzini
parent d8b5b5d132
commit 4bc8747085
1 changed files with 43 additions and 43 deletions
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86
tools/testing/selftests/kvm/x86_64/vmx_set_nested_state_test.c
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@ -23,38 +23,37 @@
* changes this should be updated.
*/
#define VMCS12_REVISION 0x11e57ed0
#define VCPU_ID 5
bool have_evmcs;
void test_nested_state(struct kvm_vm *vm, struct kvm_nested_state *state)
void test_nested_state(struct kvm_vcpu *vcpu, struct kvm_nested_state *state)
{
vcpu_nested_state_set(vm, VCPU_ID, state);
vcpu_nested_state_set(vcpu->vm, vcpu->id, state);
}
void test_nested_state_expect_errno(struct kvm_vm *vm,
void test_nested_state_expect_errno(struct kvm_vcpu *vcpu,
struct kvm_nested_state *state,
int expected_errno)
{
int rv;
rv = __vcpu_nested_state_set(vm, VCPU_ID, state);
rv = __vcpu_nested_state_set(vcpu->vm, vcpu->id, state);
TEST_ASSERT(rv == -1 && errno == expected_errno,
"Expected %s (%d) from vcpu_nested_state_set but got rv: %i errno: %s (%d)",
strerror(expected_errno), expected_errno, rv, strerror(errno),
errno);
}
void test_nested_state_expect_einval(struct kvm_vm *vm,
void test_nested_state_expect_einval(struct kvm_vcpu *vcpu,
struct kvm_nested_state *state)
{
test_nested_state_expect_errno(vm, state, EINVAL);
test_nested_state_expect_errno(vcpu, state, EINVAL);
}
void test_nested_state_expect_efault(struct kvm_vm *vm,
void test_nested_state_expect_efault(struct kvm_vcpu *vcpu,
struct kvm_nested_state *state)
{
test_nested_state_expect_errno(vm, state, EFAULT);
test_nested_state_expect_errno(vcpu, state, EFAULT);
}
void set_revision_id_for_vmcs12(struct kvm_nested_state *state,
@ -86,7 +85,7 @@ void set_default_vmx_state(struct kvm_nested_state *state, int size)
set_revision_id_for_vmcs12(state, VMCS12_REVISION);
}
void test_vmx_nested_state(struct kvm_vm *vm)
void test_vmx_nested_state(struct kvm_vcpu *vcpu)
{
/* Add a page for VMCS12. */
const int state_sz = sizeof(struct kvm_nested_state) + getpagesize();
@ -96,14 +95,14 @@ void test_vmx_nested_state(struct kvm_vm *vm)
/* The format must be set to 0. 0 for VMX, 1 for SVM. */
set_default_vmx_state(state, state_sz);
state->format = 1;
test_nested_state_expect_einval(vm, state);
test_nested_state_expect_einval(vcpu, state);
/*
* We cannot virtualize anything if the guest does not have VMX
* enabled.
*/
set_default_vmx_state(state, state_sz);
test_nested_state_expect_einval(vm, state);
test_nested_state_expect_einval(vcpu, state);
/*
* We cannot virtualize anything if the guest does not have VMX
@ -112,17 +111,17 @@ void test_vmx_nested_state(struct kvm_vm *vm)
*/
set_default_vmx_state(state, state_sz);
state->hdr.vmx.vmxon_pa = -1ull;
test_nested_state_expect_einval(vm, state);
test_nested_state_expect_einval(vcpu, state);
state->hdr.vmx.vmcs12_pa = -1ull;
state->flags = KVM_STATE_NESTED_EVMCS;
test_nested_state_expect_einval(vm, state);
test_nested_state_expect_einval(vcpu, state);
state->flags = 0;
test_nested_state(vm, state);
test_nested_state(vcpu, state);
/* Enable VMX in the guest CPUID. */
vcpu_set_cpuid(vm, VCPU_ID, kvm_get_supported_cpuid());
vcpu_set_cpuid(vcpu->vm, vcpu->id, kvm_get_supported_cpuid());
/*
* Setting vmxon_pa == -1ull and vmcs_pa == -1ull exits early without
@ -133,34 +132,34 @@ void test_vmx_nested_state(struct kvm_vm *vm)
set_default_vmx_state(state, state_sz);
state->hdr.vmx.vmxon_pa = -1ull;
state->hdr.vmx.vmcs12_pa = -1ull;
test_nested_state_expect_einval(vm, state);
test_nested_state_expect_einval(vcpu, state);
state->flags &= KVM_STATE_NESTED_EVMCS;
if (have_evmcs) {
test_nested_state_expect_einval(vm, state);
vcpu_enable_evmcs(vm, VCPU_ID);
test_nested_state_expect_einval(vcpu, state);
vcpu_enable_evmcs(vcpu->vm, vcpu->id);
}
test_nested_state(vm, state);
test_nested_state(vcpu, state);
/* It is invalid to have vmxon_pa == -1ull and SMM flags non-zero. */
state->hdr.vmx.smm.flags = 1;
test_nested_state_expect_einval(vm, state);
test_nested_state_expect_einval(vcpu, state);
/* Invalid flags are rejected. */
set_default_vmx_state(state, state_sz);
state->hdr.vmx.flags = ~0;
test_nested_state_expect_einval(vm, state);
test_nested_state_expect_einval(vcpu, state);
/* It is invalid to have vmxon_pa == -1ull and vmcs_pa != -1ull. */
set_default_vmx_state(state, state_sz);
state->hdr.vmx.vmxon_pa = -1ull;
state->flags = 0;
test_nested_state_expect_einval(vm, state);
test_nested_state_expect_einval(vcpu, state);
/* It is invalid to have vmxon_pa set to a non-page aligned address. */
set_default_vmx_state(state, state_sz);
state->hdr.vmx.vmxon_pa = 1;
test_nested_state_expect_einval(vm, state);
test_nested_state_expect_einval(vcpu, state);
/*
* It is invalid to have KVM_STATE_NESTED_SMM_GUEST_MODE and
@ -170,7 +169,7 @@ void test_vmx_nested_state(struct kvm_vm *vm)
state->flags = KVM_STATE_NESTED_GUEST_MODE |
KVM_STATE_NESTED_RUN_PENDING;
state->hdr.vmx.smm.flags = KVM_STATE_NESTED_SMM_GUEST_MODE;
test_nested_state_expect_einval(vm, state);
test_nested_state_expect_einval(vcpu, state);
/*
* It is invalid to have any of the SMM flags set besides:
@ -180,13 +179,13 @@ void test_vmx_nested_state(struct kvm_vm *vm)
set_default_vmx_state(state, state_sz);
state->hdr.vmx.smm.flags = ~(KVM_STATE_NESTED_SMM_GUEST_MODE |
KVM_STATE_NESTED_SMM_VMXON);
test_nested_state_expect_einval(vm, state);
test_nested_state_expect_einval(vcpu, state);
/* Outside SMM, SMM flags must be zero. */
set_default_vmx_state(state, state_sz);
state->flags = 0;
state->hdr.vmx.smm.flags = KVM_STATE_NESTED_SMM_GUEST_MODE;
test_nested_state_expect_einval(vm, state);
test_nested_state_expect_einval(vcpu, state);
/*
* Size must be large enough to fit kvm_nested_state and vmcs12
@ -195,13 +194,13 @@ void test_vmx_nested_state(struct kvm_vm *vm)
set_default_vmx_state(state, state_sz);
state->size = sizeof(*state);
state->flags = 0;
test_nested_state_expect_einval(vm, state);
test_nested_state_expect_einval(vcpu, state);
set_default_vmx_state(state, state_sz);
state->size = sizeof(*state);
state->flags = 0;
state->hdr.vmx.vmcs12_pa = -1;
test_nested_state(vm, state);
test_nested_state(vcpu, state);
/*
* KVM_SET_NESTED_STATE succeeds with invalid VMCS
@ -209,7 +208,7 @@ void test_vmx_nested_state(struct kvm_vm *vm)
*/
set_default_vmx_state(state, state_sz);
state->flags = 0;
test_nested_state(vm, state);
test_nested_state(vcpu, state);
/* Invalid flags are rejected, even if no VMCS loaded. */
set_default_vmx_state(state, state_sz);
@ -217,13 +216,13 @@ void test_vmx_nested_state(struct kvm_vm *vm)
state->flags = 0;
state->hdr.vmx.vmcs12_pa = -1;
state->hdr.vmx.flags = ~0;
test_nested_state_expect_einval(vm, state);
test_nested_state_expect_einval(vcpu, state);
/* vmxon_pa cannot be the same address as vmcs_pa. */
set_default_vmx_state(state, state_sz);
state->hdr.vmx.vmxon_pa = 0;
state->hdr.vmx.vmcs12_pa = 0;
test_nested_state_expect_einval(vm, state);
test_nested_state_expect_einval(vcpu, state);
/*
* Test that if we leave nesting the state reflects that when we get
@ -233,8 +232,8 @@ void test_vmx_nested_state(struct kvm_vm *vm)
state->hdr.vmx.vmxon_pa = -1ull;
state->hdr.vmx.vmcs12_pa = -1ull;
state->flags = 0;
test_nested_state(vm, state);
vcpu_nested_state_get(vm, VCPU_ID, state);
test_nested_state(vcpu, state);
vcpu_nested_state_get(vcpu->vm, vcpu->id, state);
TEST_ASSERT(state->size >= sizeof(*state) && state->size <= state_sz,
"Size must be between %ld and %d. The size returned was %d.",
sizeof(*state), state_sz, state->size);
@ -244,7 +243,7 @@ void test_vmx_nested_state(struct kvm_vm *vm)
free(state);
}
void disable_vmx(struct kvm_vm *vm)
void disable_vmx(struct kvm_vcpu *vcpu)
{
struct kvm_cpuid2 *cpuid = kvm_get_supported_cpuid();
int i;
@ -256,7 +255,7 @@ void disable_vmx(struct kvm_vm *vm)
TEST_ASSERT(i != cpuid->nent, "CPUID function 1 not found");
cpuid->entries[i].ecx &= ~CPUID_VMX;
vcpu_set_cpuid(vm, VCPU_ID, cpuid);
vcpu_set_cpuid(vcpu->vm, vcpu->id, cpuid);
cpuid->entries[i].ecx |= CPUID_VMX;
}
@ -264,6 +263,7 @@ int main(int argc, char *argv[])
{
struct kvm_vm *vm;
struct kvm_nested_state state;
struct kvm_vcpu *vcpu;
have_evmcs = kvm_check_cap(KVM_CAP_HYPERV_ENLIGHTENED_VMCS);
@ -278,20 +278,20 @@ int main(int argc, char *argv[])
*/
nested_vmx_check_supported();
vm = vm_create_default(VCPU_ID, 0, 0);
vm = vm_create_with_one_vcpu(&vcpu, NULL);
/*
* First run tests with VMX disabled to check error handling.
*/
disable_vmx(vm);
disable_vmx(vcpu);
/* Passing a NULL kvm_nested_state causes a EFAULT. */
test_nested_state_expect_efault(vm, NULL);
test_nested_state_expect_efault(vcpu, NULL);
/* 'size' cannot be smaller than sizeof(kvm_nested_state). */
set_default_state(&state);
state.size = 0;
test_nested_state_expect_einval(vm, &state);
test_nested_state_expect_einval(vcpu, &state);
/*
* Setting the flags 0xf fails the flags check. The only flags that
@ -302,7 +302,7 @@ int main(int argc, char *argv[])
*/
set_default_state(&state);
state.flags = 0xf;
test_nested_state_expect_einval(vm, &state);
test_nested_state_expect_einval(vcpu, &state);
/*
* If KVM_STATE_NESTED_RUN_PENDING is set then
@ -310,9 +310,9 @@ int main(int argc, char *argv[])
*/
set_default_state(&state);
state.flags = KVM_STATE_NESTED_RUN_PENDING;
test_nested_state_expect_einval(vm, &state);
test_nested_state_expect_einval(vcpu, &state);
test_vmx_nested_state(vm);
test_vmx_nested_state(vcpu);
kvm_vm_free(vm);
return 0;