diff options
| author | Tiwei Bie <tiwei.btw@antgroup.com> | 2025-02-21 12:18:55 +0800 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2025-03-18 11:04:39 +0100 |
| commit | e82cf3051e6193f61e03898f8dba035199064d36 (patch) | |
| tree | 40ba7b2266059925097f5608de224b53273e3dab | |
| parent | f664a1399633c63706f763d4bb58c96110355330 (diff) | |
um: Update min_low_pfn to match changes in uml_reserved
When uml_reserved is updated, min_low_pfn must also be updated
accordingly. Otherwise, min_low_pfn will not accurately reflect
the lowest available PFN.
Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20250221041855.1156109-1-tiwei.btw@antgroup.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| -rw-r--r-- | arch/um/kernel/mem.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c index 05ffceb555b4..61b5a5ede01c 100644 --- a/arch/um/kernel/mem.c +++ b/arch/um/kernel/mem.c @@ -68,6 +68,7 @@ void __init mem_init(void) map_memory(brk_end, __pa(brk_end), uml_reserved - brk_end, 1, 1, 0); memblock_free((void *)brk_end, uml_reserved - brk_end); uml_reserved = brk_end; + min_low_pfn = PFN_UP(__pa(uml_reserved)); /* this will put all low memory onto the freelists */ memblock_free_all(); |