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| author | Mike Rapoport <rppt@linux.ibm.com> | 2020-06-27 10:16:52 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-22 03:25:59 +0200 |
| commit | 72a7af33e08083c118b57c93c1456cc9a5045dc6 (patch) | |
| tree | 9e0bfce0321f19f0da634824fa0240e3e8a9c15c /arch/sparc/mm/srmmu.c | |
| parent | sparc32: fix a user-triggerable oops in clear_user() (diff) | |
| download | linux-72a7af33e08083c118b57c93c1456cc9a5045dc6.tar.xz linux-72a7af33e08083c118b57c93c1456cc9a5045dc6.zip | |
sparc32: use PUD rather than PGD to get PMD in srmmu_inherit_prom_mappings()
This is a misprint in the page table traversal in
srmmu_inherit_prom_mappings`() function which accessed a PMD entry using
PGD rather than PUD.
Since sparc32 has only 3 page table levels, the PGD and PUD are
essentially the same and usage of __nocache_fix() removed the type
checking.
Use PUD for the consistency and to avoid breakage because of upcoming
addition of type checking into __nocache_fix().
Fixes: 7235db268a2777bc38 ("sparc32: use pgtable-nopud instead of 4level-fixup")
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/mm/srmmu.c')
| -rw-r--r-- | arch/sparc/mm/srmmu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c index 0070f8b9a753..f5fa07958f34 100644 --- a/arch/sparc/mm/srmmu.c +++ b/arch/sparc/mm/srmmu.c @@ -822,7 +822,7 @@ static void __init srmmu_inherit_prom_mappings(unsigned long start, memset(__nocache_fix(pmdp), 0, SRMMU_PMD_TABLE_SIZE); pud_set(__nocache_fix(pudp), pmdp); } - pmdp = pmd_offset(__nocache_fix(pgdp), start); + pmdp = pmd_offset(__nocache_fix(pudp), start); if (what == 1) { *(pmd_t *)__nocache_fix(pmdp) = __pmd(probed); start += PMD_SIZE; |