linux-kernel - Re: [PATCH 01/21] x86/mm/asi: Add CONFIG_MITIGATION_ADDRESS_SPACE

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Message-ID: <20251024223746.GTaPv_uiyc0wd1fPjV@fat_crate.local>
Date: Sat, 25 Oct 2025 00:37:46 +0200
From: Borislav Petkov <bp@...en8.de>
To: Brendan Jackman <jackmanb@...gle.com>
Cc: Andy Lutomirski <luto@...nel.org>,
	Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
	"Liam R. Howlett" <Liam.Howlett@...cle.com>,
	Suren Baghdasaryan <surenb@...gle.com>,
	Michal Hocko <mhocko@...e.com>,
	Johannes Weiner <hannes@...xchg.org>, Zi Yan <ziy@...dia.com>,
	Axel Rasmussen <axelrasmussen@...gle.com>,
	Yuanchu Xie <yuanchu@...gle.com>,
	Roman Gushchin <roman.gushchin@...ux.dev>, peterz@...radead.org,
	dave.hansen@...ux.intel.com, mingo@...hat.com, tglx@...utronix.de,
	akpm@...ux-foundation.org, david@...hat.com, derkling@...gle.com,
	junaids@...gle.com, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, reijiw@...gle.com, rientjes@...gle.com,
	rppt@...nel.org, vbabka@...e.cz, x86@...nel.org,
	yosry.ahmed@...ux.dev
Subject: Re: [PATCH 01/21] x86/mm/asi: Add
 CONFIG_MITIGATION_ADDRESS_SPACE_ISOLATION

On Wed, Sep 24, 2025 at 02:59:36PM +0000, Brendan Jackman wrote:
> This long awkward name is for consistency with
> CONFIG_MITIGATION_PAGE_TABLE_ISOLATION.

But why?

I bet you someone will get confused and mean
CONFIG_MITIGATION_PAGE_TABLE_ISOLATION when she means
CONFIG_MITIGATION_ADDRESS_SPACE_ISOLATION or vice versa due to the
conglomerate of similar words.

Now compare that to CONFIG_ASI! Wonderfully short and clear.

Especially when the namespace already is "asi_" ...

The only problem with ASI is it doesn't tell you what it is but you can look
it up with simple grepping...

I'd say.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette