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| author | Heiko Carstens <hca@linux.ibm.com> | 2023-04-06 13:31:29 +0200 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2023-04-13 17:36:28 +0200 |
| commit | 81e8479649853ffafc714aca4a9c0262efd3160a (patch) | |
| tree | e915ac65bdca546ed59942519196a967d361a93b /arch/s390/include | |
| parent | 07fdd6627f7f9c72ed68d531653b56df81da9996 (diff) | |
| download | linux-stable-81e8479649853ffafc714aca4a9c0262efd3160a.tar.gz linux-stable-81e8479649853ffafc714aca4a9c0262efd3160a.tar.bz2 linux-stable-81e8479649853ffafc714aca4a9c0262efd3160a.zip | |
s390/mm: fix direct map accounting
Commit bb1520d581a3 ("s390/mm: start kernel with DAT enabled") did not
implement direct map accounting in the early page table setup code. In
result the reported values are bogus now:
$cat /proc/meminfo
...
DirectMap4k: 5120 kB
DirectMap1M: 18446744073709546496 kB
DirectMap2G: 0 kB
Fix this by adding the missing accounting. The result looks sane again:
$cat /proc/meminfo
...
DirectMap4k: 6156 kB
DirectMap1M: 2091008 kB
DirectMap2G: 6291456 kB
Fixes: bb1520d581a3 ("s390/mm: start kernel with DAT enabled")
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/include')
| -rw-r--r-- | arch/s390/include/asm/pgtable.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 2c70b4d1263d..acbe1ac2d571 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -34,7 +34,7 @@ enum { PG_DIRECT_MAP_MAX }; -extern atomic_long_t direct_pages_count[PG_DIRECT_MAP_MAX]; +extern atomic_long_t __bootdata_preserved(direct_pages_count[PG_DIRECT_MAP_MAX]); static inline void update_page_count(int level, long count) { |