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Wed, 29 Mar 2023 16:23:42 GMT Received: from smtpav04.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7DCF15805E; Wed, 29 Mar 2023 16:23:42 +0000 (GMT) Received: from smtpav04.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6C21758052; Wed, 29 Mar 2023 16:23:42 +0000 (GMT) Received: from localhost (unknown [9.41.178.242]) by smtpav04.dal12v.mail.ibm.com (Postfix) with ESMTP; Wed, 29 Mar 2023 16:23:42 +0000 (GMT) From: Nathan Lynch To: Michael Ellerman , Andrew Donnellan Subject: Re: [PATCH 7/8] powerpc/rtas: warn on unsafe argument to rtas_call_unlocked() In-Reply-To: <87zg7vbvfi.fsf@mpe.ellerman.id.au> References: <20230220-rtas-queue-for-6-4-v1-0-010e4416f13f@linux.ibm.com> <20230220-rtas-queue-for-6-4-v1-7-010e4416f13f@linux.ibm.com> <87mt437jcu.fsf@linux.ibm.com> <871qlf6k7m.fsf@linux.ibm.com> <87zg7vbvfi.fsf@mpe.ellerman.id.au> Date: Wed, 29 Mar 2023 11:23:42 -0500 Message-ID: <87y1nf5xwx.fsf@linux.ibm.com> Content-Type: text/plain X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: w3y424zCHPm_-jUgwdDMROtVL6aHptWQ X-Proofpoint-GUID: 1Lz2i92E_z34-KeDUVAGIDvm9dPoK5iD X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-03-29_09,2023-03-28_02,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 spamscore=0 priorityscore=1501 phishscore=0 lowpriorityscore=0 adultscore=0 suspectscore=0 impostorscore=0 mlxlogscore=999 bulkscore=0 malwarescore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303200000 definitions=main-2303290123 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Tyrel Datwyler , Nick Child , Scott Cheloha , Nicholas Piggin , Laurent Dufour , linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Michael Ellerman writes: > Nathan Lynch writes: >> Nathan Lynch writes: >>> >>> aside: does anyone know if the display_status() code is worth keeping? >>> It looks like it is used to drive the 16-character wide physical LCD I >>> remember seeing on P4-era and older machines. Is it a vestige of >>> non-LPAR pseries that should be dropped, or is it perhaps useful for >>> chrp or cell? >> >> Never mind, I see the display-character token and associated properties >> on a P8 LPAR and in a current PAPR. > > Or a P10 LPAR even. > > The characters written using it are shown on the HMC, somewhere on the > partition info page. Yes, in the "Reference code" field. On the command line, you can see the history, too: hscroot@ltchmcv3:~> lsrefcode -r lpar -m ltczep4 --filter lpar_names=ltczep4-lp3 -n 10 -F 'time_stamp refcode' "03/28/2023 18:38:20" "Linux ppc64le" "03/28/2023 18:38:19" CA000093 "03/28/2023 18:38:19" CA00E891 "03/28/2023 18:38:19" CA260208 "03/28/2023 18:38:19" CA260208 "03/28/2023 18:38:19" CA00E890 "03/28/2023 18:38:19" CA000050 "03/28/2023 18:38:19" CA000040 "03/28/2023 18:38:19" CA00E880 "03/28/2023 18:38:19" CA00E879 https://www.ibm.com/docs/en/power10/000V-HMC?topic=commands-lsrefcode