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Fri, 10 Oct 2025 08:52:01 +0000 (GMT) From: Sumanth Korikkar To: Andrew Morton , David Hildenbrand , linux-mm Cc: LKML , linux-s390 , Gerald Schaefer , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Sumanth Korikkar Subject: [PATCH v3 3/4] s390/sclp: Remove MHP_OFFLINE_INACCESSIBLE Date: Fri, 10 Oct 2025 10:51:46 +0200 Message-ID: <20251010085147.2175918-4-sumanthk@linux.ibm.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20251010085147.2175918-1-sumanthk@linux.ibm.com> References: <20251010085147.2175918-1-sumanthk@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: DMJtnELfKhFqKc1h1X-nm1rbwfVcrN5L X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMDA4MDEyMSBTYWx0ZWRfX8bOlm2FdqGSG 38/cliz8S9d4eMYWkDH0L1/+00+lYk99F+lih1lyN3dFCS6FMsbrnofstL7ELx6XMfk3ZL/xvg7 UbdjkNPuxtLPh6t66LPqKaxdCfBZfxorsTh1Q+8TxXNoD7So1YYpun53RzVRLYKHuwtZLwbyP8Z NLNmhs/3NWlkr78d6U2uMlMrthXrh7iBtzzg8/Tzy0wYYPPftmXw9DDAkcI3LgTU0PC4iL2AHV3 s3QvBVfAeoIgYrLIiPIGeIUqKCxt580theQ5fF0YvPKGUS1tAio05bRsjyYxanqIP8p0o2pOLg7 MR/Dpv7SjyzflGvvhlOqEropYzDkVk9zNfWR5hpn0L5aJidKC93AVFBZeuoGDrqR2odgq8C4+co Zk7zjCJGfOT0bOEbm8Mij3BR7a3knQ== X-Authority-Analysis: v=2.4 cv=cKntc1eN c=1 sm=1 tr=0 ts=68e8c936 cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=x6icFKpwvdMA:10 a=VnNF1IyMAAAA:8 a=20KFwNOVAAAA:8 a=f30ByJGsKnh_ESHQSg4A:9 a=cPQSjfK2_nFv0Q5t_7PE:22 X-Proofpoint-GUID: DMJtnELfKhFqKc1h1X-nm1rbwfVcrN5L X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1117,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-10-10_01,2025-10-06_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 impostorscore=0 adultscore=0 lowpriorityscore=0 malwarescore=0 suspectscore=0 bulkscore=0 phishscore=0 spamscore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2510020000 definitions=main-2510080121 Content-Type: text/plain; charset="utf-8" mhp_flag MHP_OFFLINE_INACCESSIBLE was used to mark memory as not accessible until memory hotplug online phase begins. Earlier, standby memory blocks were added upfront during boottime and MHP_OFFLINE_INACCESSIBLE flag avoided page_init_poison() on memmap during mhp addtion phase. However with dynamic runtime configuration of memory, standby memory can be brought to accessible state before performing add_memory(). Hence, remove MHP_OFFLINE_INACCESSIBLE. Acked-by: Heiko Carstens Reviewed-by: David Hildenbrand Signed-off-by: Sumanth Korikkar --- drivers/s390/char/sclp_mem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/s390/char/sclp_mem.c b/drivers/s390/char/sclp_mem.c index e44b3b01dae6..80b993ebf0e6 100644 --- a/drivers/s390/char/sclp_mem.c +++ b/drivers/s390/char/sclp_mem.c @@ -224,7 +224,7 @@ static ssize_t config_sclp_mem_store(struct kobject *ko= bj, struct kobj_attribute __arch_set_page_nodat((void *)__va(addr), block_size >> PAGE_SHIFT); rc =3D __add_memory(0, addr, block_size, sclp_mem->memmap_on_memory ? - MHP_MEMMAP_ON_MEMORY | MHP_OFFLINE_INACCESSIBLE : MHP_NONE); + MHP_MEMMAP_ON_MEMORY : MHP_NONE); if (rc) { sclp_mem_change_state(addr, block_size, 0); goto out_unlock; --=20 2.48.1