linux-kernel - Re: [PATCH v12 1/7] arm64: Kconfig: add support for LSUI

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Message-ID: <aYY0xOdUxn39ZPZh@arm.com>
Date: Fri, 6 Feb 2026 18:36:52 +0000
From: Catalin Marinas <catalin.marinas@....com>
To: Yeoreum Yun <yeoreum.yun@....com>
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	kvmarm@...ts.linux.dev, kvm@...r.kernel.org,
	linux-kselftest@...r.kernel.org, will@...nel.org, maz@...nel.org,
	broonie@...nel.org, oliver.upton@...ux.dev, miko.lenczewski@....com,
	kevin.brodsky@....com, ardb@...nel.org, suzuki.poulose@....com,
	lpieralisi@...nel.org, scott@...amperecomputing.com,
	joey.gouly@....com, yuzenghui@...wei.com, pbonzini@...hat.com,
	shuah@...nel.org, mark.rutland@....com, arnd@...db.de
Subject: Re: [PATCH v12 1/7] arm64: Kconfig: add support for LSUI

On Wed, Jan 21, 2026 at 07:06:16PM +0000, Yeoreum Yun wrote:
> Since Armv9.6, FEAT_LSUI supplies the load/store instructions for
> previleged level to access to access user memory without clearing
> PSTATE.PAN bit.
> 
> Add Kconfig option entry for FEAT_LSUI.
> 
> Signed-off-by: Yeoreum Yun <yeoreum.yun@....com>

Reviewed-by: Catalin Marinas <catalin.marinas@....com>

In general we should move the Kconfig addition last for bisectability,
unless all the other patches introduced are ok on their own.

-- 
Catalin