diff options
| author | Dov Murik <dovmurik@linux.ibm.com> | 2021-10-11 17:30:26 +0000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-10-13 10:47:50 +0200 |
| commit | 59e42d88b6851b238927cbe48505b1cef547ce3b (patch) | |
| tree | a7a333cf749822fbb4a9357f4af257fb605b3a51 /target/i386/sev.c | |
| parent | eb8257a261325988873e047872975b5eda03efb4 (diff) | |
target/i386/sev: Use local variable for kvm_sev_launch_measure
The struct kvm_sev_launch_measure has a constant and small size, and
therefore we can use a regular local variable for it instead of
allocating and freeing heap memory for it.
Signed-off-by: Dov Murik <dovmurik@linux.ibm.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20211011173026.2454294-3-dovmurik@linux.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'target/i386/sev.c')
| -rw-r--r-- | target/i386/sev.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/target/i386/sev.c b/target/i386/sev.c index 0062566c71..eede07f11d 100644 --- a/target/i386/sev.c +++ b/target/i386/sev.c @@ -729,7 +729,7 @@ sev_launch_get_measure(Notifier *notifier, void *unused) SevGuestState *sev = sev_guest; int ret, error; g_autofree guchar *data = NULL; - g_autofree struct kvm_sev_launch_measure *measurement = NULL; + struct kvm_sev_launch_measure measurement = {}; if (!sev_check_state(sev, SEV_STATE_LAUNCH_UPDATE)) { return; @@ -743,23 +743,21 @@ sev_launch_get_measure(Notifier *notifier, void *unused) } } - measurement = g_new0(struct kvm_sev_launch_measure, 1); - /* query the measurement blob length */ ret = sev_ioctl(sev->sev_fd, KVM_SEV_LAUNCH_MEASURE, - measurement, &error); - if (!measurement->len) { + &measurement, &error); + if (!measurement.len) { error_report("%s: LAUNCH_MEASURE ret=%d fw_error=%d '%s'", __func__, ret, error, fw_error_to_str(errno)); return; } - data = g_new0(guchar, measurement->len); - measurement->uaddr = (unsigned long)data; + data = g_new0(guchar, measurement.len); + measurement.uaddr = (unsigned long)data; /* get the measurement blob */ ret = sev_ioctl(sev->sev_fd, KVM_SEV_LAUNCH_MEASURE, - measurement, &error); + &measurement, &error); if (ret) { error_report("%s: LAUNCH_MEASURE ret=%d fw_error=%d '%s'", __func__, ret, error, fw_error_to_str(errno)); @@ -769,7 +767,7 @@ sev_launch_get_measure(Notifier *notifier, void *unused) sev_set_guest_state(sev, SEV_STATE_LAUNCH_SECRET); /* encode the measurement value and emit the event */ - sev->measurement = g_base64_encode(data, measurement->len); + sev->measurement = g_base64_encode(data, measurement.len); trace_kvm_sev_launch_measurement(sev->measurement); } |