[PATCH 3/4] s390/sclp: Remove MHP_OFFLINE_INACCESSIBLE

Sumanth Korikkar
2025-09-26T13:15:58Z

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 <hca@linux.ibm.com>
Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
---
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 = __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 = find_memory_block(pfn_to_section_nr(PFN_DOWN(addr)));
--
2.48.1