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From: SJ Park <sj@kernel.org>
To: "Yongting Lin" <linyongting@bytedance.com>
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Subject: Re: [PATCH v8 0/8] mm: Hot page tracking and promotion infrastructure
Date: Mon, 10 Aug 2026 07:37:05 -0700
Message-ID: <20260810143706.93163-1-sj@kernel.org>
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On Mon, 10 Aug 2026 11:38:14 +0800 "Yongting Lin" <linyongting@bytedance.com> wrote:

[...]
> IBS is not the only possible hardware source. CXL 3.2 defines CHMU for
> device-side hotness monitoring, and CHMU has also been discussed in the
> DAMON and CXL hotness-monitoring discussions.

Yes, we discussed DAMON could be extended for access check primitives other
than page table accessed bit, and CHMU could be one of such primitives.  The
extension is in progress [1].

[...]
> We would also be interested in helping test and compare the different
> approaches as implementations become available.

Please feel free to let me know if you want to test DAMON-based approaches.  I
will be happy to help :)

[1] https://lore.kernel.org/all/20260525225208.1179-1-sj@kernel.org/


Thanks,
SJ

[...]