diff options
| author | Tiwei Bie <tiwei.btw@antgroup.com> | 2025-02-21 12:18:55 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-05-29 11:02:14 +0200 |
| commit | 728945c962695ec5db95e44e9449f6b3edcccbcf (patch) | |
| tree | 202f06e4a3cdc12ab6b1c33d3310b02b2fd4023f | |
| parent | d6d2f664cbf3b9bb99e5e5c41d32c567aa9cebd1 (diff) | |
um: Update min_low_pfn to match changes in uml_reserved
[ Upstream commit e82cf3051e6193f61e03898f8dba035199064d36 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -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 a5b4fe2ad931..6ca9ea4a230b 100644 --- a/arch/um/kernel/mem.c +++ b/arch/um/kernel/mem.c @@ -70,6 +70,7 @@ 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(); |