diff options
| -rw-r--r-- | target/i386/sev.c | 86 | ||||
| -rw-r--r-- | target/i386/trace-events | 2 |
2 files changed, 88 insertions, 0 deletions
diff --git a/target/i386/sev.c b/target/i386/sev.c index 349ccc0..26f888e 100644 --- a/target/i386/sev.c +++ b/target/i386/sev.c @@ -106,6 +106,17 @@ fw_error_to_str(int code) } static void +sev_set_guest_state(SevState new_state) +{ + assert(new_state < SEV_STATE__MAX); + assert(sev_state); + + trace_kvm_sev_change_state(SevState_str(sev_state->state), + SevState_str(new_state)); + sev_state->state = new_state; +} + +static void sev_ram_block_added(RAMBlockNotifier *n, void *host, size_t size) { int r; @@ -406,6 +417,75 @@ sev_get_info(void) return info; } +static int +sev_read_file_base64(const char *filename, guchar **data, gsize *len) +{ + gsize sz; + gchar *base64; + GError *error = NULL; + + if (!g_file_get_contents(filename, &base64, &sz, &error)) { + error_report("failed to read '%s' (%s)", filename, error->message); + return -1; + } + + *data = g_base64_decode(base64, len); + return 0; +} + +static int +sev_launch_start(SEVState *s) +{ + gsize sz; + int ret = 1; + int fw_error; + QSevGuestInfo *sev = s->sev_info; + struct kvm_sev_launch_start *start; + guchar *session = NULL, *dh_cert = NULL; + + start = g_new0(struct kvm_sev_launch_start, 1); + + start->handle = object_property_get_int(OBJECT(sev), "handle", + &error_abort); + start->policy = object_property_get_int(OBJECT(sev), "policy", + &error_abort); + if (sev->session_file) { + if (sev_read_file_base64(sev->session_file, &session, &sz) < 0) { + return 1; + } + start->session_uaddr = (unsigned long)session; + start->session_len = sz; + } + + if (sev->dh_cert_file) { + if (sev_read_file_base64(sev->dh_cert_file, &dh_cert, &sz) < 0) { + return 1; + } + start->dh_uaddr = (unsigned long)dh_cert; + start->dh_len = sz; + } + + trace_kvm_sev_launch_start(start->policy, session, dh_cert); + ret = sev_ioctl(s->sev_fd, KVM_SEV_LAUNCH_START, start, &fw_error); + if (ret < 0) { + error_report("%s: LAUNCH_START ret=%d fw_error=%d '%s'", + __func__, ret, fw_error, fw_error_to_str(fw_error)); + return 1; + } + + object_property_set_int(OBJECT(sev), start->handle, "handle", + &error_abort); + sev_set_guest_state(SEV_STATE_LAUNCH_UPDATE); + s->handle = start->handle; + s->policy = start->policy; + + g_free(start); + g_free(session); + g_free(dh_cert); + + return 0; +} + void * sev_guest_init(const char *id) { @@ -476,6 +556,12 @@ sev_guest_init(const char *id) goto err; } + ret = sev_launch_start(s); + if (ret) { + error_report("%s: failed to create encryption context", __func__); + goto err; + } + ram_block_notifier_add(&sev_ram_notifier); return s; diff --git a/target/i386/trace-events b/target/i386/trace-events index a1da4bd..3f29c85 100644 --- a/target/i386/trace-events +++ b/target/i386/trace-events @@ -10,3 +10,5 @@ kvm_x86_update_msi_routes(int num) "Updated %d MSI routes" kvm_sev_init(void) "" kvm_memcrypt_register_region(void *addr, size_t len) "addr %p len 0x%zu" kvm_memcrypt_unregister_region(void *addr, size_t len) "addr %p len 0x%zu" +kvm_sev_change_state(const char *old, const char *new) "%s -> %s" +kvm_sev_launch_start(int policy, void *session, void *pdh) "policy 0x%x session %p pdh %p" |