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| author | Mike Rapoport (IBM) <rppt@kernel.org> | 2023-02-14 16:07:29 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-02-16 20:43:55 -0800 |
| commit | b4fb12e6c74791ac4c5c98b845628c576366b889 (patch) | |
| tree | a5b85ae370cadd04cbf7673abd00ca1b31d77b0f /arch/sh/mm | |
| parent | 9325ddf90ec3a801c09da374b74532d4589a7346 (diff) | |
| download | lwn-b4fb12e6c74791ac4c5c98b845628c576366b889.tar.gz lwn-b4fb12e6c74791ac4c5c98b845628c576366b889.zip | |
sh: initialize max_mapnr
sh never initializes max_mapnr which is used by the generic implementation
of pfn_valid().
Initialize max_mapnr with set_max_mapnr() in sh::paging_init().
Link: https://lkml.kernel.org/r/20230214140729.1649961-3-rppt@kernel.org
Fixes: e5080a967785 ("mm, arch: add generic implementation of pfn_valid() for FLATMEM")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
Acked-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Rich Felker <dalias@libc.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'arch/sh/mm')
| -rw-r--r-- | arch/sh/mm/init.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c index 506784702430..bf1b54055316 100644 --- a/arch/sh/mm/init.c +++ b/arch/sh/mm/init.c @@ -301,6 +301,7 @@ void __init paging_init(void) */ max_low_pfn = max_pfn = memblock_end_of_DRAM() >> PAGE_SHIFT; min_low_pfn = __MEMORY_START >> PAGE_SHIFT; + set_max_mapnr(max_low_pfn - min_low_pfn); nodes_clear(node_online_map); |