diff options
| author | Ard Biesheuvel <ardb@kernel.org> | 2024-03-01 11:40:48 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2024-03-01 15:25:45 +0000 |
| commit | 3137db4c66bf70360ee7027af5c50662b3152046 (patch) | |
| tree | f1505d51aa329ee5f5567185e0097496eb73b385 | |
| parent | 2758269149250e2c28991fb8d216ffa40857ee0a (diff) | |
arm64/mm: Use generic __pud_free() helper in pud_free() implementation
Commit 0dd4f60a2c76 ("arm64: mm: Add support for folding PUDs at
runtime") implements specialized PUD alloc/free helpers to allow the
decision whether or not to fold PUDs to be made at runtime when the
number of paging levels is 4 or higher.
Its implementation of pud_free() is based on the generic version that
existed when the patch was first written, but in the meantime, the
freeing of a PUD has become a bit more involved, and so instead of
simply freeing the page, we should invoke the generic __pud_free() that
encapsulates whatever needs doing at this point.
This fixes a reported warning emitted by the page flags
self-diagnostics.
Reported-by: Ryan Roberts <ryan.roberts@arm.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Ryan Roberts <ryan.roberts@arm.com>
Link: https://lore.kernel.org/r/20240301104046.1234309-5-ardb+git@google.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| -rw-r--r-- | arch/arm64/include/asm/pgalloc.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/arm64/include/asm/pgalloc.h b/arch/arm64/include/asm/pgalloc.h index aeba2cf15a25..8ff5f2a2579e 100644 --- a/arch/arm64/include/asm/pgalloc.h +++ b/arch/arm64/include/asm/pgalloc.h @@ -60,8 +60,7 @@ static inline void pud_free(struct mm_struct *mm, pud_t *pud) { if (!pgtable_l4_enabled()) return; - BUG_ON((unsigned long)pud & (PAGE_SIZE-1)); - free_page((unsigned long)pud); + __pud_free(mm, pud); } #else static inline void __p4d_populate(p4d_t *p4dp, phys_addr_t pudp, p4dval_t prot) |