linux-kernel - Re: kvm: arm64: stable commit "Fix kernel BUG() due to bad backport of FPSIMD/SVE/SME fix" deadlocks host kernel

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Message-ID: <qbiybep4kcm7hijtvg6qum4ubic37s6xnlzq2jvr5jwqjoffc4@htxzojej2zsv>
Date: Wed, 8 Oct 2025 22:00:35 +0900
From: Sergey Senozhatsky <senozhatsky@...omium.org>
To: Will Deacon <will@...nel.org>
Cc: Sergey Senozhatsky <senozhatsky@...omium.org>, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Catalin Marinas <catalin.marinas@....com>, 
	Mark Brown <broonie@...nel.org>, Mark Rutland <mark.rutland@....com>, 
	Tomasz Figa <tfiga@...omium.org>, linux-arm-kernel@...ts.infradead.org, 
	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: kvm: arm64: stable commit "Fix kernel BUG() due to bad backport
 of FPSIMD/SVE/SME fix" deadlocks host kernel

On (25/10/08 09:45), Will Deacon wrote:
[..]
> > We found out a similar report at [1], but it doesn't seem like a formal
> > patch was ever posted.  Will, can you please send a formal patch so that
> > stable kernels can run VMs again?
> 
> Yup, already queued up for stable:
> 
> https://lore.kernel.org/r/20251003183917.4209-1-will@kernel.org
> https://lore.kernel.org/r/20251003184018.4264-1-will@kernel.org
> https://lore.kernel.org/r/20251003184054.4286-1-will@kernel.org

Splendid!

> Sorry for the breakage.

No worries!