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Subject[PATCH v2 11/13] KVM: selftests: add support for creating SEV-ES guests
Date
Only a couple KVM_SEV_* ioctls need to be handled differently for
SEV-ES. Do so when the specified policy indicates SEV-ES support.

Signed-off-by: Michael Roth <michael.roth@amd.com>
---
tools/testing/selftests/kvm/lib/x86_64/sev.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/kvm/lib/x86_64/sev.c b/tools/testing/selftests/kvm/lib/x86_64/sev.c
index 4a99862d62e6..181be03f5a10 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/sev.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/sev.c
@@ -182,14 +182,18 @@ struct sev_vm *sev_vm_create(uint32_t policy, uint64_t npages)
return NULL;
sev->sev_policy = policy;

- kvm_sev_ioctl(sev, KVM_SEV_INIT, NULL);
+ if (sev->sev_policy & SEV_POLICY_ES)
+ kvm_sev_ioctl(sev, KVM_SEV_ES_INIT, NULL);
+ else
+ kvm_sev_ioctl(sev, KVM_SEV_INIT, NULL);

vm_set_memory_encryption(vm, true, true, sev->enc_bit);
vm_userspace_mem_region_add(vm, VM_MEM_SRC_ANONYMOUS, 0, 0, npages, 0);
sev_register_user_region(sev, addr_gpa2hva(vm, 0),
npages * vm_get_page_size(vm));

- pr_info("SEV guest created, policy: 0x%x, size: %lu KB\n",
+ pr_info("%s guest created, policy: 0x%x, size: %lu KB\n",
+ (sev->sev_policy & SEV_POLICY_ES) ? "SEV-ES" : "SEV",
sev->sev_policy, npages * vm_get_page_size(vm) / 1024);

return sev;
@@ -211,6 +215,9 @@ void sev_vm_launch(struct sev_vm *sev)
"Unexpected guest state: %d", ksev_status.state);

sev_encrypt(sev);
+
+ if (sev->sev_policy & SEV_POLICY_ES)
+ kvm_sev_ioctl(sev, KVM_SEV_LAUNCH_UPDATE_VMSA, NULL);
}

void sev_vm_launch_measure(struct sev_vm *sev, uint8_t *measurement)
--
2.25.1
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