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Thu, 7 May 2020 17:26:57 +0000 (GMT) Received: from bahia.lan (unknown [9.145.160.63]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTP; Thu, 7 May 2020 17:26:57 +0000 (GMT) Subject: [PATCH 3/6] target/ppc: Don't initialize some local variables in ppc_radix64_xlate() From: Greg Kurz To: David Gibson Date: Thu, 07 May 2020 19:26:50 +0200 Message-ID: <158887241032.1564424.1335205982073200922.stgit@bahia.lan> In-Reply-To: <158887239173.1564424.16721638327458334129.stgit@bahia.lan> References: <158887239173.1564424.16721638327458334129.stgit@bahia.lan> User-Agent: StGit/unknown-version MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.216, 18.0.676 definitions=2020-05-07_10:2020-05-07, 2020-05-07 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=758 priorityscore=1501 lowpriorityscore=0 bulkscore=0 spamscore=0 phishscore=0 malwarescore=0 impostorscore=0 suspectscore=0 mlxscore=0 clxscore=1034 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2005070135 Received-SPF: softfail client-ip=148.163.156.1; envelope-from=groug@kaod.org; helo=mx0a-001b2d01.pphosted.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/07 13:26:52 X-ACL-Warn: Detected OS = Linux 3.x [generic] X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, KHOP_DYNAMIC=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_SOFTFAIL=0.665, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN 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: qemu-ppc@nongnu.org, =?utf-8?q?C=C3=A9dric?= Le Goater , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" It is the job of the ppc_radix64_get_fully_qualified_addr() function which is called at the beginning of ppc_radix64_xlate() to set both lpid *and* pid. It doesn't buy us anything to initialize them first. Worse, a bug in ppc_radix64_get_fully_qualified_addr(), eg. failing to set either lpid or pid, would be undetectable by static analysis tools like coverity. Signed-off-by: Greg Kurz --- target/ppc/mmu-radix64.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/target/ppc/mmu-radix64.c b/target/ppc/mmu-radix64.c index c76879f65b78..5e2d912ee346 100644 --- a/target/ppc/mmu-radix64.c +++ b/target/ppc/mmu-radix64.c @@ -433,7 +433,7 @@ static int ppc_radix64_xlate(PowerPCCPU *cpu, vaddr eaddr, int rwx, bool cause_excp) { CPUPPCState *env = &cpu->env; - uint64_t lpid = 0, pid = 0; + uint64_t lpid, pid; ppc_v3_pate_t pate; int psize, prot; hwaddr g_raddr;