* [PATCH bpf-next] arm64: mm: Remove misleading pte_none() comment from ptep_try_set()
@ 2026-06-14 21:02 Tejun Heo
0 siblings, 0 replies; only message in thread
From: Tejun Heo @ 2026-06-14 21:02 UTC (permalink / raw)
To: catalin.marinas, will
Cc: ast, andrii, daniel, martin.lau, memxor, akpm, david, rppt,
arighi, emil, linux-arm-kernel, bpf, linux-mm, linux-kernel
This comment was thoughtlessly copied from the x86 version and doesn't
apply to arm64. Remove it.
Reported-by: Will Deacon <will@kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
---
arch/arm64/include/asm/pgtable.h | 4 ----
1 file changed, 4 deletions(-)
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index 3ce0f2a6cab6..b0213799ebc4 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -1830,10 +1830,6 @@ static inline pte_t ptep_get_and_clear(struct mm_struct *mm,
return __ptep_get_and_clear(mm, addr, ptep);
}
-/*
- * Note: strictly-zero compare is narrower than pte_none(), but the gap is
- * harmless: a fresh kernel PTE has no software bits set.
- */
static inline bool ptep_try_set(pte_t *ptep, pte_t new_pte)
{
pteval_t old = 0;
--
2.51.0
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2026-06-14 21:02 [PATCH bpf-next] arm64: mm: Remove misleading pte_none() comment from ptep_try_set() Tejun Heo
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