linux-kernel - Re: [PATCH v8 00/14] kasan: x86: arm64: KASAN tag-based mode for x86

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Message-ID: <9d78f71b-cbf1-4936-bc72-befa6d6bfe35@intel.com>
Date: Mon, 12 Jan 2026 12:27:54 -0800
From: Dave Hansen <dave.hansen@...el.com>
To: Andrew Morton <akpm@...ux-foundation.org>,
 Maciej Wieczor-Retman <m.wieczorretman@...me>
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Subject: Re: [PATCH v8 00/14] kasan: x86: arm64: KASAN tag-based mode for x86

On 1/12/26 10:29, Andrew Morton wrote:
> On Mon, 12 Jan 2026 17:26:29 +0000 Maciej Wieczor-Retman <m.wieczorretman@...me> wrote:
>> The patchset aims to add a KASAN tag-based mode for the x86 architecture
>> with the help of the new CPU feature called Linear Address Masking
>> (LAM). Main improvement introduced by the series is 2x lower memory
>> usage compared to KASAN's generic mode, the only currently available
>> mode on x86. The tag based mode may also find errors that the generic
>> mode couldn't because of differences in how these modes operate.
> Well this is a hearty mixture of arm, x86 and MM.  I guess that means
> mm.git.
> 
> The review process seems to be proceeding OK so I'll add this to
> mm.git's mm-new branch, which is not included in linux-next.  I'll aim
> to hold it there for a week while people check the patches over and
> send out their acks (please).  Then I hope I can move it into mm.git's
> mm-unstable branch where it will receive linux-next exposure.

Yeah, it'll be good to get it some more testing exposure.

But, we definitely don't want it going upstream until it's more
thoroughly reviewed than it stands. Maciej, this would be a good time to
make sure you have a good idea who needs to review this and go rattle
some cages.