linux-kernel - Re: [PATCH v3] x86: Clear feature bits disabled at compile-time

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Message-ID: <2025072459-emergency-slighting-9d60@gregkh>
Date: Thu, 24 Jul 2025 12:34:38 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: Maciej Wieczor-Retman <maciej.wieczor-retman@...el.com>
Cc: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
	"H. Peter Anvin" <hpa@...or.com>,
	Kyung Min Park <kyung.min.park@...el.com>,
	Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>,
	Tony Luck <tony.luck@...el.com>, xin3.li@...el.com,
	Farrah Chen <farrah.chen@...el.com>, stable@...r.kernel.org,
	Borislav Petkov <bp@...e.de>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] x86: Clear feature bits disabled at compile-time

On Thu, Jul 24, 2025 at 12:13:25PM +0200, Maciej Wieczor-Retman wrote:
> Hello Greg,
> 
> I'd like to ask you for guidence on how to proceed with backporting this change
> to the 5.10 stable kernel and newer ones.

Don't worry about it UNTIL your patch lands in Linus's tree.  Then, if
it doesn't apply to a specific stable branch, just send us a working
backport.  Not too complex :)

thanks,

greg k-h