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From: "Zi Yan" <ziy@nvidia.com>
To: lsf-pc@lists.linux-foundation.org
Cc: linux-mm@kvack.org
Subject: Re: [LSF/MM/BPF TOPIC] 1GB PUD THP support (gigantic page allocation, increasing MAX_ORDER, anti-fragmentation and more)
Date: Tue, 11 May 2021 17:36:56 -0400	[thread overview]
Message-ID: <8A871C11-9D6A-449E-AF41-42B5D38BE173@nvidia.com> (raw)
In-Reply-To: <FBF3E7A8-AAD2-4CD2-B939-1574F761A99E@nvidia.com>

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On 11 May 2021, at 17:18, Zi Yan wrote:

> I have been working on 1GB THP support [1][2][3] and would like to have a discussion on the high-level design and some implementation details. The topics I would like to discuss related to 1GB PUD THP include:
>
> 1. Gigantic page allocation. Since MAX_ORDER is limiting us from allocating 1GB pages, we need to enable it via one or more ways, like using alloc_contig_range() or increasing MAX_ORDER.

For increasing MAX_ORDER, there is a discussion[1] about how it affects memory hotplug/hotremove, compaction, page isolation. More feedback is welcome and needed due to its broad impact on the mm code.

[1] https://lore.kernel.org/linux-mm/20210506152623.178731-1-zi.yan@sent.com/

—
Best Regards,
Yan Zi

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      reply	other threads:[~2021-05-11 21:37 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-11 21:18 Zi Yan
2021-05-11 21:36 ` Zi Yan [this message]

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