linux-kernel - Re: [PATCH] ARM: spectre-v2: fix unstable cpu get

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Message-ID: <aAoQwsldwmxAKA0A@shell.armlinux.org.uk>
Date: Thu, 24 Apr 2025 11:21:54 +0100
From: "Russell King (Oracle)" <linux@...linux.org.uk>
To: xieyuanbin1 <xieyuanbin1@...wei.com>
Cc: sfr@...b.auug.org.au, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, will@...nel.org,
	nixiaoming@...wei.com, liaohua4@...wei.com, wangbing6@...wei.com,
	lincheng8@...wei.com, wangfangpeng1@...wei.com
Subject: Re: [PATCH] ARM: spectre-v2: fix unstable cpu get

On Thu, Apr 24, 2025 at 06:04:37PM +0800, xieyuanbin1 wrote:
> From: Xie Yuanbin <xieyuanbin1@...wei.com>
> 
> When a user program accesses the kernel address,

Please see
https://lore.kernel.org/all/795c9463-452e-bf64-1cc0-c318ccecb1da@I-love.SAKURA.ne.jp/T/

As I see it, this can't be fixed - certainly not in this way due to the
reasons I set out in the above thread.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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