diff options
| author | Mark Brown <broonie@kernel.org> | 2025-09-12 00:54:56 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2025-09-12 00:54:56 +0100 |
| commit | 9ca01e9226dbbb523b49b4e583e1d522977b4fe6 (patch) | |
| tree | 630b0bbaf8c27dfb24c42570ec6e399700a4e662 /mm/userfaultfd.c | |
| parent | 2c625f0fe2db4e6a58877ce2318df3aa312eb791 (diff) | |
| parent | 6a129b2ca5c533aec89fbeb58470811cc4102642 (diff) | |
support for Amlogic SPI Flash Controller IP
Merge series from Xianwei Zhao <xianwei.zhao@amlogic.com>:
This Flash Controller is derived by adding an SPI path to the original
raw NAND controller. This controller supports two modes: raw mode and
SPI mode. The raw mode has already been implemented in the community
(drivers/mtd/nand/raw/meson_nand.c).
This submission supports the SPI mode.
Add the drivers and bindings corresponding to the SPI Flash Controller.
Diffstat (limited to 'mm/userfaultfd.c')
| -rw-r--r-- | mm/userfaultfd.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/mm/userfaultfd.c b/mm/userfaultfd.c index 45e6290e2e8b..aefdf3a812a1 100644 --- a/mm/userfaultfd.c +++ b/mm/userfaultfd.c @@ -1453,10 +1453,15 @@ out: folio_unlock(src_folio); folio_put(src_folio); } - if (dst_pte) - pte_unmap(dst_pte); + /* + * Unmap in reverse order (LIFO) to maintain proper kmap_local + * index ordering when CONFIG_HIGHPTE is enabled. We mapped dst_pte + * first, then src_pte, so we must unmap src_pte first, then dst_pte. + */ if (src_pte) pte_unmap(src_pte); + if (dst_pte) + pte_unmap(dst_pte); mmu_notifier_invalidate_range_end(&range); if (si) put_swap_device(si); |