linux-kernel - Re: [PATCH 6.1.y RESEND] KVM: arm64: silence -Wuninitialized-const-pointer warning

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Message-ID: <2lse2swdqrovimdsakgtriadki2fsvikhuetjzxztoui5hpsai@6mmc64ugt22k>
Date: Thu, 4 Dec 2025 12:53:58 -0800
From: Justin Stitt <justinstitt@...gle.com>
To: Marc Zyngier <maz@...nel.org>, Oliver Upton <oliver.upton@...ux.dev>, 
	Alexandru Elisei <alexandru.elisei@....com>, Joey Gouly <joey.gouly@....com>, 
	Suzuki K Poulose <suzuki.poulose@....com>, Catalin Marinas <catalin.marinas@....com>, 
	Zenghui Yu <yuzenghui@...wei.com>, Will Deacon <will@...nel.org>, 
	Nathan Chancellor <nathan@...nel.org>, Christopher Covington <cov@...eaurora.org>
Cc: linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.cs.columbia.edu, 
	linux-kernel@...r.kernel.org, llvm@...ts.linux.dev, stable@...r.kernel.org
Subject: Re: [PATCH 6.1.y RESEND] KVM: arm64: silence
 -Wuninitialized-const-pointer warning

Quick correction:

On Thu, Dec 04, 2025 at 12:50:11PM -0800, Justin Stitt wrote:
> A new warning in Clang 22 [1] complains that @clidr passed to
> get_clidr_el1() is an uninitialized const pointer. get_clidr_el1()
> doesn't really care since it casts away the const-ness anyways.
> 
> Silence the warning by initializing the struct.
> 
> This patch won't apply to anything past v6.1 as this code section was
> reworked in Commit 7af0c2534f4c ("KVM: arm64: Normalize cache
> configuration"). There is no upstream equivalent so this patch only
> needs to be applied (stable only) to 6.1.
> 
> Cc: stable@...r.kernel.org
> Fixes: 7c8c5e6a9101e ("arm64: KVM: system register handling")
> Link: https://github.com/llvm/llvm-project/commit/00dacf8c22f065cb52efb14cd091d441f19b319e [1]
> Signed-off-by: Justin Stitt <justinstitt@...gle.com>
> ---
> Resending this with Nathan's RB tag, an updated commit log and better
> recipients from checkpatch.pl.

My usage of $ b4 trailers must've not been correct because this 6.1
version didn't pick up Nathan's RB tag. Whoops! Hopefully whoever picks
this up can add that for me :)

<snip>