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Mon, 11 Oct 2021 17:30:37 GMT Received: from b03ledav004.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1E51978077; Mon, 11 Oct 2021 17:30:37 +0000 (GMT) Received: from b03ledav004.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7DF9678060; Mon, 11 Oct 2021 17:30:36 +0000 (GMT) Received: from amdrome3.watson.ibm.com (unknown [9.2.130.16]) by b03ledav004.gho.boulder.ibm.com (Postfix) with ESMTP; Mon, 11 Oct 2021 17:30:36 +0000 (GMT) From: Dov Murik To: qemu-devel@nongnu.org Subject: [PATCH 1/2] target/i386/sev: Use local variable for kvm_sev_launch_start Date: Mon, 11 Oct 2021 17:30:25 +0000 Message-Id: <20211011173026.2454294-2-dovmurik@linux.ibm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211011173026.2454294-1-dovmurik@linux.ibm.com> References: <20211011173026.2454294-1-dovmurik@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: YVtFCr6Nmmym2_vUeNbrGvNRghJSs_Mr X-Proofpoint-ORIG-GUID: Od0NqgnUzM8ommii7bvlg0h1GaFGKxbw X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.182.1,Aquarius:18.0.790,Hydra:6.0.425,FMLib:17.0.607.475 definitions=2021-10-11_06,2021-10-11_01,2020-04-07_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 spamscore=0 priorityscore=1501 mlxlogscore=999 impostorscore=0 bulkscore=0 suspectscore=0 clxscore=1015 malwarescore=0 phishscore=0 mlxscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2109230001 definitions=main-2110110101 Received-SPF: pass client-ip=148.163.156.1; envelope-from=dovmurik@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Brijesh Singh , Eduardo Habkost , Sergio Lopez , "Michael S. Tsirkin" , James Bottomley , "Dr. David Alan Gilbert" , Dov Murik , Paolo Bonzini , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" 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 --- target/i386/sev.c | 23 ++++++++++------------- 1 file changed, 10 insertions(+), 13 deletions(-) diff --git a/target/i386/sev.c b/target/i386/sev.c index 4c64c68244..0062566c71 100644 --- a/target/i386/sev.c +++ b/target/i386/sev.c @@ -647,31 +647,29 @@ sev_launch_start(SevGuestState *sev) gsize sz; int ret = 1; int fw_error, rc; - struct kvm_sev_launch_start *start; + struct kvm_sev_launch_start start = { + .handle = sev->handle, .policy = sev->policy + }; guchar *session = NULL, *dh_cert = NULL; - start = g_new0(struct kvm_sev_launch_start, 1); - - start->handle = sev->handle; - start->policy = sev->policy; if (sev->session_file) { if (sev_read_file_base64(sev->session_file, &session, &sz) < 0) { goto out; } - start->session_uaddr = (unsigned long)session; - start->session_len = sz; + 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) { goto out; } - start->dh_uaddr = (unsigned long)dh_cert; - start->dh_len = sz; + start.dh_uaddr = (unsigned long)dh_cert; + start.dh_len = sz; } - trace_kvm_sev_launch_start(start->policy, session, dh_cert); - rc = sev_ioctl(sev->sev_fd, KVM_SEV_LAUNCH_START, start, &fw_error); + trace_kvm_sev_launch_start(start.policy, session, dh_cert); + rc = sev_ioctl(sev->sev_fd, KVM_SEV_LAUNCH_START, &start, &fw_error); if (rc < 0) { error_report("%s: LAUNCH_START ret=%d fw_error=%d '%s'", __func__, ret, fw_error, fw_error_to_str(fw_error)); @@ -679,11 +677,10 @@ sev_launch_start(SevGuestState *sev) } sev_set_guest_state(sev, SEV_STATE_LAUNCH_UPDATE); - sev->handle = start->handle; + sev->handle = start.handle; ret = 0; out: - g_free(start); g_free(session); g_free(dh_cert); return ret; -- 2.25.1