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KVM: selftests: Convert sync_regs_test away from VCPU_ID

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Convert sync_regs_test to use vm_create_with_vcpus() and pass around a
'struct kvm_vcpu' object instead of passing around vCPU IDs.  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 2022-02-16 12:20:41 -08:00 committed by Paolo Bonzini
parent ebca1b8056
commit e5b77cdef9
1 changed files with 30 additions and 29 deletions
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59
tools/testing/selftests/kvm/s390x/sync_regs_test.c
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@ -23,8 +23,6 @@
#include "diag318_test_handler.h"
#include "kselftest.h"
#define VCPU_ID 5
static void guest_code(void)
{
/*
@ -75,55 +73,58 @@ static void compare_sregs(struct kvm_sregs *left, struct kvm_sync_regs *right)
#define TEST_SYNC_FIELDS (KVM_SYNC_GPRS|KVM_SYNC_ACRS|KVM_SYNC_CRS|KVM_SYNC_DIAG318)
#define INVALID_SYNC_FIELD 0x80000000
void test_read_invalid(struct kvm_vm *vm, struct kvm_run *run)
void test_read_invalid(struct kvm_vcpu *vcpu)
{
struct kvm_run *run = vcpu->run;
int rv;
/* Request reading invalid register set from VCPU. */
run->kvm_valid_regs = INVALID_SYNC_FIELD;
rv = _vcpu_run(vm, VCPU_ID);
rv = _vcpu_run(vcpu->vm, vcpu->id);
TEST_ASSERT(rv < 0 && errno == EINVAL,
"Invalid kvm_valid_regs did not cause expected KVM_RUN error: %d\n",
rv);
vcpu_state(vm, VCPU_ID)->kvm_valid_regs = 0;
run->kvm_valid_regs = 0;
run->kvm_valid_regs = INVALID_SYNC_FIELD | TEST_SYNC_FIELDS;
rv = _vcpu_run(vm, VCPU_ID);
rv = _vcpu_run(vcpu->vm, vcpu->id);
TEST_ASSERT(rv < 0 && errno == EINVAL,
"Invalid kvm_valid_regs did not cause expected KVM_RUN error: %d\n",
rv);
vcpu_state(vm, VCPU_ID)->kvm_valid_regs = 0;
run->kvm_valid_regs = 0;
}
void test_set_invalid(struct kvm_vm *vm, struct kvm_run *run)
void test_set_invalid(struct kvm_vcpu *vcpu)
{
struct kvm_run *run = vcpu->run;
int rv;
/* Request setting invalid register set into VCPU. */
run->kvm_dirty_regs = INVALID_SYNC_FIELD;
rv = _vcpu_run(vm, VCPU_ID);
rv = _vcpu_run(vcpu->vm, vcpu->id);
TEST_ASSERT(rv < 0 && errno == EINVAL,
"Invalid kvm_dirty_regs did not cause expected KVM_RUN error: %d\n",
rv);
vcpu_state(vm, VCPU_ID)->kvm_dirty_regs = 0;
run->kvm_dirty_regs = 0;
run->kvm_dirty_regs = INVALID_SYNC_FIELD | TEST_SYNC_FIELDS;
rv = _vcpu_run(vm, VCPU_ID);
rv = _vcpu_run(vcpu->vm, vcpu->id);
TEST_ASSERT(rv < 0 && errno == EINVAL,
"Invalid kvm_dirty_regs did not cause expected KVM_RUN error: %d\n",
rv);
vcpu_state(vm, VCPU_ID)->kvm_dirty_regs = 0;
run->kvm_dirty_regs = 0;
}
void test_req_and_verify_all_valid_regs(struct kvm_vm *vm, struct kvm_run *run)
void test_req_and_verify_all_valid_regs(struct kvm_vcpu *vcpu)
{
struct kvm_run *run = vcpu->run;
struct kvm_sregs sregs;
struct kvm_regs regs;
int rv;
/* Request and verify all valid register sets. */
run->kvm_valid_regs = TEST_SYNC_FIELDS;
rv = _vcpu_run(vm, VCPU_ID);
rv = _vcpu_run(vcpu->vm, vcpu->id);
TEST_ASSERT(rv == 0, "vcpu_run failed: %d\n", rv);
TEST_ASSERT(run->exit_reason == KVM_EXIT_S390_SIEIC,
"Unexpected exit reason: %u (%s)\n",
@ -136,15 +137,16 @@ void test_req_and_verify_all_valid_regs(struct kvm_vm *vm, struct kvm_run *run)
run->s390_sieic.icptcode, run->s390_sieic.ipa,
run->s390_sieic.ipb);
vcpu_regs_get(vm, VCPU_ID, &regs);
vcpu_regs_get(vcpu->vm, vcpu->id, &regs);
compare_regs(&regs, &run->s.regs);
vcpu_sregs_get(vm, VCPU_ID, &sregs);
vcpu_sregs_get(vcpu->vm, vcpu->id, &sregs);
compare_sregs(&sregs, &run->s.regs);
}
void test_set_and_verify_various_reg_values(struct kvm_vm *vm, struct kvm_run *run)
void test_set_and_verify_various_reg_values(struct kvm_vcpu *vcpu)
{
struct kvm_run *run = vcpu->run;
struct kvm_sregs sregs;
struct kvm_regs regs;
int rv;
@ -161,7 +163,7 @@ void test_set_and_verify_various_reg_values(struct kvm_vm *vm, struct kvm_run *r
run->kvm_dirty_regs |= KVM_SYNC_DIAG318;
}
rv = _vcpu_run(vm, VCPU_ID);
rv = _vcpu_run(vcpu->vm, vcpu->id);
TEST_ASSERT(rv == 0, "vcpu_run failed: %d\n", rv);
TEST_ASSERT(run->exit_reason == KVM_EXIT_S390_SIEIC,
"Unexpected exit reason: %u (%s)\n",
@ -177,15 +179,16 @@ void test_set_and_verify_various_reg_values(struct kvm_vm *vm, struct kvm_run *r
"diag318 sync regs value incorrect 0x%llx.",
run->s.regs.diag318);
vcpu_regs_get(vm, VCPU_ID, &regs);
vcpu_regs_get(vcpu->vm, vcpu->id, &regs);
compare_regs(&regs, &run->s.regs);
vcpu_sregs_get(vm, VCPU_ID, &sregs);
vcpu_sregs_get(vcpu->vm, vcpu->id, &sregs);
compare_sregs(&sregs, &run->s.regs);
}
void test_clear_kvm_dirty_regs_bits(struct kvm_vm *vm, struct kvm_run *run)
void test_clear_kvm_dirty_regs_bits(struct kvm_vcpu *vcpu)
{
struct kvm_run *run = vcpu->run;
int rv;
/* Clear kvm_dirty_regs bits, verify new s.regs values are
@ -195,7 +198,7 @@ void test_clear_kvm_dirty_regs_bits(struct kvm_vm *vm, struct kvm_run *run)
run->kvm_dirty_regs = 0;
run->s.regs.gprs[11] = 0xDEADBEEF;
run->s.regs.diag318 = 0x4B1D;
rv = _vcpu_run(vm, VCPU_ID);
rv = _vcpu_run(vcpu->vm, vcpu->id);
TEST_ASSERT(rv == 0, "vcpu_run failed: %d\n", rv);
TEST_ASSERT(run->exit_reason == KVM_EXIT_S390_SIEIC,
"Unexpected exit reason: %u (%s)\n",
@ -211,7 +214,7 @@ void test_clear_kvm_dirty_regs_bits(struct kvm_vm *vm, struct kvm_run *run)
struct testdef {
const char *name;
void (*test)(struct kvm_vm *vm, struct kvm_run *run);
void (*test)(struct kvm_vcpu *vcpu);
} testlist[] = {
{ "read invalid", test_read_invalid },
{ "set invalid", test_set_invalid },
@ -222,8 +225,8 @@ struct testdef {
int main(int argc, char *argv[])
{
static struct kvm_run *run;
static struct kvm_vm *vm;
struct kvm_vcpu *vcpu;
struct kvm_vm *vm;
int idx;
/* Tell stdout not to buffer its content */
@ -237,12 +240,10 @@ int main(int argc, char *argv[])
ksft_set_plan(ARRAY_SIZE(testlist));
/* Create VM */
vm = vm_create_default(VCPU_ID, 0, guest_code);
run = vcpu_state(vm, VCPU_ID);
vm = vm_create_with_one_vcpu(&vcpu, guest_code);
for (idx = 0; idx < ARRAY_SIZE(testlist); idx++) {
testlist[idx].test(vm, run);
testlist[idx].test(vcpu);
ksft_test_result_pass("%s\n", testlist[idx].name);
}