diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-12-05 09:46:26 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-12-05 09:46:26 -0800 |
commit | 5ecc9d15f73b82c748526350d5602c94fdd65cac (patch) | |
tree | 686ae55a0de4be8bad9e2248b019e459525cb109 /arch/nds32/mm/fault.c | |
parent | 2f13437b8917627119d163d62f73e7a78a92303a (diff) | |
parent | f949286c668aed5aa24acdb5838be9cfd9513bd3 (diff) |
Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton:
"Most of the rest of MM and various other things. Some Kconfig rework
still awaits merges of dependent trees from linux-next.
Subsystems affected by this patch series: mm/hotfixes, mm/memcg,
mm/vmstat, mm/thp, procfs, sysctl, misc, notifiers, core-kernel,
bitops, lib, checkpatch, epoll, binfmt, init, rapidio, uaccess, kcov,
ubsan, ipc, bitmap, mm/pagemap"
* akpm: (86 commits)
mm: remove __ARCH_HAS_4LEVEL_HACK and include/asm-generic/4level-fixup.h
um: add support for folded p4d page tables
um: remove unused pxx_offset_proc() and addr_pte() functions
sparc32: use pgtable-nopud instead of 4level-fixup
parisc/hugetlb: use pgtable-nopXd instead of 4level-fixup
parisc: use pgtable-nopXd instead of 4level-fixup
nds32: use pgtable-nopmd instead of 4level-fixup
microblaze: use pgtable-nopmd instead of 4level-fixup
m68k: mm: use pgtable-nopXd instead of 4level-fixup
m68k: nommu: use pgtable-nopud instead of 4level-fixup
c6x: use pgtable-nopud instead of 4level-fixup
arm: nommu: use pgtable-nopud instead of 4level-fixup
alpha: use pgtable-nopud instead of 4level-fixup
gpio: pca953x: tighten up indentation
gpio: pca953x: convert to use bitmap API
gpio: pca953x: use input from regs structure in pca953x_irq_pending()
gpio: pca953x: remove redundant variable and check in IRQ handler
lib/bitmap: introduce bitmap_replace() helper
lib/test_bitmap: fix comment about this file
lib/test_bitmap: move exp1 and exp2 upper for others to use
...
Diffstat (limited to 'arch/nds32/mm/fault.c')
-rw-r--r-- | arch/nds32/mm/fault.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/arch/nds32/mm/fault.c b/arch/nds32/mm/fault.c index 064ae5d2159d..906dfb25353c 100644 --- a/arch/nds32/mm/fault.c +++ b/arch/nds32/mm/fault.c @@ -31,6 +31,8 @@ void show_pte(struct mm_struct *mm, unsigned long addr) pr_alert("[%08lx] *pgd=%08lx", addr, pgd_val(*pgd)); do { + p4d_t *p4d; + pud_t *pud; pmd_t *pmd; if (pgd_none(*pgd)) @@ -41,7 +43,9 @@ void show_pte(struct mm_struct *mm, unsigned long addr) break; } - pmd = pmd_offset(pgd, addr); + p4d = p4d_offset(pgd, addr); + pud = pud_offset(p4d, addr); + pmd = pmd_offset(pud, addr); #if PTRS_PER_PMD != 1 pr_alert(", *pmd=%08lx", pmd_val(*pmd)); #endif @@ -359,6 +363,7 @@ vmalloc_fault: unsigned int index = pgd_index(addr); pgd_t *pgd, *pgd_k; + p4d_t *p4d, *p4d_k; pud_t *pud, *pud_k; pmd_t *pmd, *pmd_k; pte_t *pte_k; @@ -369,8 +374,13 @@ vmalloc_fault: if (!pgd_present(*pgd_k)) goto no_context; - pud = pud_offset(pgd, addr); - pud_k = pud_offset(pgd_k, addr); + p4d = p4d_offset(pgd, addr); + p4d_k = p4d_offset(pgd_k, addr); + if (!p4d_present(*p4d_k)) + goto no_context; + + pud = pud_offset(p4d, addr); + pud_k = pud_offset(p4d_k, addr); if (!pud_present(*pud_k)) goto no_context; |