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Fri, 26 Sep 2025 13:15:48 +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 3/4] s390/sclp: Remove MHP_OFFLINE_INACCESSIBLE Date: Fri, 26 Sep 2025 15:15:26 +0200 Message-ID: <20250926131527.3260733-4-sumanthk@linux.ibm.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250926131527.3260733-1-sumanthk@linux.ibm.com> References: <20250926131527.3260733-1-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: hN-2WtSxn6u81hiCYsJmqwsZzqsrdF5H X-Authority-Analysis: v=2.4 cv=LakxKzfi c=1 sm=1 tr=0 ts=68d69209 cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=yJojWOMRYYMA:10 a=VnNF1IyMAAAA:8 a=f30ByJGsKnh_ESHQSg4A:9 a=cPQSjfK2_nFv0Q5t_7PE:22 X-Proofpoint-GUID: hN-2WtSxn6u81hiCYsJmqwsZzqsrdF5H X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwOTI1MDE3NCBTYWx0ZWRfX/ptYI8Up3RKz ehXD+jkDZjRogvAlsPYmrMzoscb9zKvUFFS1FXnP1pd6hi5rYdlDaQJWaRUr0RgHhIK5yBqije0 uJQigGWv34T8A8mWXYT5iUJdMPwyjroeDo37g906ocBgpoTomVcpY3Tn9OoGT/jtdCzvizTRaf3 02Gw7Ek6HZ8L8b6BRlpQW/EwL8Ae/RCuIUeYGAD2rPdQa60bHuIJd5JYozvHEH4VvOLKsYup8TR qpundNvgS0nzGKGBpz0XHtD1ydyDMNZYjyx3f6lKO1QaKgGSDeDnSLxThXbroLejUvwEjL2w9Dg m4DXNrfXXU4X0lx8BCpSEYrysxZ3SGRwinEpnxl/tGVglZnLUpOVfuFukAp9K32ODv0VywLXt5j B4cys4jC4SA73y3TRl36M126XeOZ5g== 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=2025-09-26_04,2025-09-26_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 spamscore=0 bulkscore=0 adultscore=0 clxscore=1015 impostorscore=0 priorityscore=1501 malwarescore=0 phishscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2509150000 definitions=main-2509250174 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 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 802439230294..f49b8457e721 100644 --- a/drivers/s390/char/sclp_mem.c +++ b/drivers/s390/char/sclp_mem.c @@ -267,7 +267,7 @@ static ssize_t config_mblock_store(struct kobject *kobj= , struct kobj_attribute * __arch_set_page_nodat((void *)__va(addr), block_size >> PAGE_SHIFT); rc =3D __add_memory(0, addr, block_size, mblock->memmap_on_memory ? - MHP_MEMMAP_ON_MEMORY | MHP_OFFLINE_INACCESSIBLE : MHP_NONE); + MHP_MEMMAP_ON_MEMORY : MHP_NONE); if (rc) goto out_unlock; mem =3D find_memory_block(pfn_to_section_nr(PFN_DOWN(addr))); --=20 2.48.1