target/i386/sev: Use local variable for kvm_sev_launch_start
The struct kvm_sev_launch_start 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: <20211011173026.2454294-2-dovmurik@linux.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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@ -647,31 +647,29 @@ sev_launch_start(SevGuestState *sev)
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gsize sz;
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int ret = 1;
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int fw_error, rc;
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struct kvm_sev_launch_start *start;
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struct kvm_sev_launch_start start = {
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.handle = sev->handle, .policy = sev->policy
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};
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guchar *session = NULL, *dh_cert = NULL;
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start = g_new0(struct kvm_sev_launch_start, 1);
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start->handle = sev->handle;
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start->policy = sev->policy;
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if (sev->session_file) {
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if (sev_read_file_base64(sev->session_file, &session, &sz) < 0) {
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goto out;
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}
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start->session_uaddr = (unsigned long)session;
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start->session_len = sz;
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start.session_uaddr = (unsigned long)session;
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start.session_len = sz;
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}
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if (sev->dh_cert_file) {
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if (sev_read_file_base64(sev->dh_cert_file, &dh_cert, &sz) < 0) {
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goto out;
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}
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start->dh_uaddr = (unsigned long)dh_cert;
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start->dh_len = sz;
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start.dh_uaddr = (unsigned long)dh_cert;
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start.dh_len = sz;
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}
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trace_kvm_sev_launch_start(start->policy, session, dh_cert);
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rc = sev_ioctl(sev->sev_fd, KVM_SEV_LAUNCH_START, start, &fw_error);
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trace_kvm_sev_launch_start(start.policy, session, dh_cert);
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rc = sev_ioctl(sev->sev_fd, KVM_SEV_LAUNCH_START, &start, &fw_error);
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if (rc < 0) {
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error_report("%s: LAUNCH_START ret=%d fw_error=%d '%s'",
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__func__, ret, fw_error, fw_error_to_str(fw_error));
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@ -679,11 +677,10 @@ sev_launch_start(SevGuestState *sev)
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}
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sev_set_guest_state(sev, SEV_STATE_LAUNCH_UPDATE);
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sev->handle = start->handle;
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sev->handle = start.handle;
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ret = 0;
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out:
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g_free(start);
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g_free(session);
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g_free(dh_cert);
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return ret;
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