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Mon, 28 Mar 2022 14:54:42 +0000 (GMT) Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id CA3F0AC059; Mon, 28 Mar 2022 14:54:41 +0000 (GMT) Received: from localhost (unknown [9.160.110.254]) by b01ledav006.gho.pok.ibm.com (Postfix) with ESMTPS; Mon, 28 Mar 2022 14:54:41 +0000 (GMT) From: Fabiano Rosas To: Richard Henderson , Leandro Lupori , qemu-devel@nongnu.org, qemu-ppc@nongnu.org Subject: Re: [RFC PATCH 0/6] Port PPC64/PowerNV MMU tests to QEMU In-Reply-To: References: <20220324190854.156898-1-leandro.lupori@eldorado.org.br> Date: Mon, 28 Mar 2022 11:54:39 -0300 Message-ID: <878rsuf7ps.fsf@linux.ibm.com> Content-Type: text/plain X-TM-AS-GCONF: 00 X-Proofpoint-GUID: vSEm6SHzATLKFNmZXS8R-lrQ0bYd_TQz X-Proofpoint-ORIG-GUID: luGM81W9H6gg1PNZaw2vmPOX_q9JRbnE X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.850,Hydra:6.0.425,FMLib:17.11.64.514 definitions=2022-03-28_06,2022-03-28_01,2022-02-23_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 bulkscore=0 adultscore=0 lowpriorityscore=0 malwarescore=0 suspectscore=0 phishscore=0 mlxscore=0 spamscore=0 priorityscore=1501 clxscore=1015 mlxlogscore=888 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2202240000 definitions=main-2203280084 Received-SPF: pass client-ip=148.163.156.1; envelope-from=farosas@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_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: danielhb413@gmail.com, groug@kaod.org, clg@kaod.org, pbonzini@redhat.com, alex.bennee@linaro.org, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Richard Henderson writes: > On 3/24/22 13:08, Leandro Lupori wrote: >> To be able to finish the test and return an exit code to the >> calling process, the Processor Attention instruction is used. >> As its behavior is implementation dependent, in QEMU PowerNV >> it just calls exit with GPR[3] value, truncated to an uint8_t. > > I think you're simply thinking too small here, and should consider using the attn > instruction to implement a full -semihosting interface. You might as well join arm and > riscv with CONFIG_ARM_COMPATIBLE_SEMIHOSTING. I can't reach the semihosting docs at: https://static.docs.arm.com/100863/0200/semihosting.pdf Do we need to replace that URL with something else? > > > r~