mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-16 19:31:42 -04:00
Code Issues Packages Projects Releases Wiki Activity

KVM: selftests: Use the SEV library APIs in the intra-host migration test

Browse Source 
Port the existing intra-host SEV(-ES) migration test to the recently added
SEV library, which handles much of the boilerplate needed to create and
configure SEV guests.

Tested-by: Carlos Bilbao <carlos.bilbao@amd.com>
Link: https://lore.kernel.org/r/20240223004258.3104051-10-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Sean Christopherson
2024-02-22 16:42:56 -08:00
parent ae20eef532
commit 69f8e15ab6
1 changed files with 18 additions and 42 deletions
Download Patch File Download Diff File Expand all files Collapse all files

60
tools/testing/selftests/kvm/x86_64/sev_migrate_tests.c
View File

@@ -10,11 +10,9 @@
#include "test_util.h"
#include "kvm_util.h"
#include "processor.h"
#include "svm_util.h"
#include "sev.h"
#include "kselftest.h"
#define SEV_POLICY_ES 0b100
#define NR_MIGRATE_TEST_VCPUS 4
#define NR_MIGRATE_TEST_VMS 3
#define NR_LOCK_TESTING_THREADS 3
@@ -22,46 +20,24 @@
bool have_sev_es;
static int __sev_ioctl(int vm_fd, int cmd_id, void *data, __u32 *fw_error)
{
struct kvm_sev_cmd cmd = {
.id = cmd_id,
.data = (uint64_t)data,
.sev_fd = open_sev_dev_path_or_exit(),
};
int ret;
ret = ioctl(vm_fd, KVM_MEMORY_ENCRYPT_OP, &cmd);
*fw_error = cmd.error;
return ret;
}
static void sev_ioctl(int vm_fd, int cmd_id, void *data)
{
int ret;
__u32 fw_error;
ret = __sev_ioctl(vm_fd, cmd_id, data, &fw_error);
TEST_ASSERT(ret == 0 && fw_error == SEV_RET_SUCCESS,
"%d failed: return code: %d, errno: %d, fw error: %d",
cmd_id, ret, errno, fw_error);
}
static struct kvm_vm *sev_vm_create(bool es)
{
struct kvm_vm *vm;
struct kvm_sev_launch_start start = { 0 };
int i;
vm = vm_create_barebones();
sev_ioctl(vm->fd, es ? KVM_SEV_ES_INIT : KVM_SEV_INIT, NULL);
if (!es)
sev_vm_init(vm);
else
sev_es_vm_init(vm);
for (i = 0; i < NR_MIGRATE_TEST_VCPUS; ++i)
__vm_vcpu_add(vm, i);
sev_vm_launch(vm, es ? SEV_POLICY_ES : 0);
if (es)
start.policy |= SEV_POLICY_ES;
sev_ioctl(vm->fd, KVM_SEV_LAUNCH_START, &start);
if (es)
sev_ioctl(vm->fd, KVM_SEV_LAUNCH_UPDATE_VMSA, NULL);
vm_sev_ioctl(vm, KVM_SEV_LAUNCH_UPDATE_VMSA, NULL);
return vm;
}
@@ -181,7 +157,7 @@ static void test_sev_migrate_parameters(void)
sev_vm = sev_vm_create(/* es= */ false);
sev_es_vm = sev_vm_create(/* es= */ true);
sev_es_vm_no_vmsa = vm_create_barebones();
sev_ioctl(sev_es_vm_no_vmsa->fd, KVM_SEV_ES_INIT, NULL);
sev_es_vm_init(sev_es_vm_no_vmsa);
__vm_vcpu_add(sev_es_vm_no_vmsa, 1);
ret = __sev_migrate_from(sev_vm, sev_es_vm);
@@ -230,13 +206,13 @@ static void sev_mirror_create(struct kvm_vm *dst, struct kvm_vm *src)
TEST_ASSERT(!ret, "Copying context failed, ret: %d, errno: %d\n", ret, errno);
}
static void verify_mirror_allowed_cmds(int vm_fd)
static void verify_mirror_allowed_cmds(struct kvm_vm *vm)
{
struct kvm_sev_guest_status status;
int cmd_id;
for (int cmd_id = KVM_SEV_INIT; cmd_id < KVM_SEV_NR_MAX; ++cmd_id) {
for (cmd_id = KVM_SEV_INIT; cmd_id < KVM_SEV_NR_MAX; ++cmd_id) {
int ret;
__u32 fw_error;
/*
* These commands are allowed for mirror VMs, all others are
@@ -256,14 +232,14 @@ static void verify_mirror_allowed_cmds(int vm_fd)
* These commands should be disallowed before the data
* parameter is examined so NULL is OK here.
*/
ret = __sev_ioctl(vm_fd, cmd_id, NULL, &fw_error);
ret = __vm_sev_ioctl(vm, cmd_id, NULL);
TEST_ASSERT(
ret == -1 && errno == EINVAL,
"Should not be able call command: %d. ret: %d, errno: %d\n",
cmd_id, ret, errno);
}
sev_ioctl(vm_fd, KVM_SEV_GUEST_STATUS, &status);
vm_sev_ioctl(vm, KVM_SEV_GUEST_STATUS, &status);
}
static void test_sev_mirror(bool es)
@@ -281,9 +257,9 @@ static void test_sev_mirror(bool es)
__vm_vcpu_add(dst_vm, i);
if (es)
sev_ioctl(dst_vm->fd, KVM_SEV_LAUNCH_UPDATE_VMSA, NULL);
vm_sev_ioctl(dst_vm, KVM_SEV_LAUNCH_UPDATE_VMSA, NULL);
verify_mirror_allowed_cmds(dst_vm->fd);
verify_mirror_allowed_cmds(dst_vm);
kvm_vm_free(src_vm);
kvm_vm_free(dst_vm);