[PATCH] arm64: mm: fix accidental linear mapping of no-map reserved memory

Will Deacon will at kernel.org
Thu Aug 6 10:11:41 PDT 2026


On Wed, 13 May 2026 09:02:55 +0800, liulhong617 at 163.com wrote:
> When reserved-memory regions with the "no-map" property are not
> page-aligned, the kernel may accidentally map them into the linear
> mapping, contradicting the no-map semantics.
> 
> The root cause is a mismatch between /proc/iomem's address boundaries
> and the actual page table mapping boundaries:
> 
> [...]

Applied to arm64 (for-next/mm), thanks!

[1/1] arm64: mm: fix accidental linear mapping of no-map reserved memory
      https://git.kernel.org/arm64/c/7ace06a01efa

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev



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