linux-kernel - Re: [PATCH] arm64: mm: warn once for ioremap attempts on RAM mappings

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Message-ID: <176908082966.2054641.12981520784317252855.b4-ty@kernel.org>
Date: Thu, 22 Jan 2026 16:59:42 +0000
From: Will Deacon <will@...nel.org>
To: Catalin Marinas <catalin.marinas@....com>,
	Breno Leitao <leitao@...ian.org>
Cc: kernel-team@...roid.com,
	Will Deacon <will@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	kernel-team@...a.com,
	clm@...com
Subject: Re: [PATCH] arm64: mm: warn once for ioremap attempts on RAM mappings

On Mon, 22 Dec 2025 07:28:55 -0800, Breno Leitao wrote:
> Replace WARN_ON with WARN_ONCE when detecting attempts to ioremap
> RAM. This prevents log spam when a misbehaving driver repeatedly tries
> to map RAM via ioremap.
> 
> A single warning is more than enough to show the broken code path, and
> extra reports don't add extra information.
> 
> [...]

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

[1/1] arm64: mm: warn once for ioremap attempts on RAM mappings
      https://git.kernel.org/arm64/c/53f45f045cbe

Cheers,
-- 
Will

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