From: Jiaqi Yan <jiaqiyan@google.com>
To: jane.chu@oracle.com
Cc: nao.horiguchi@gmail.com, linmiaohe@huawei.com,
tony.luck@intel.com, wangkefeng.wang@huawei.com,
akpm@linux-foundation.org, osalvador@suse.de,
rientjes@google.com, duenwen@google.com, jthoughton@google.com,
jgg@nvidia.com, ankita@nvidia.com, peterx@redhat.com,
linux-mm@kvack.org
Subject: Re: [RFC PATCH v1 1/2] mm/memory-failure: introduce global MFR policy
Date: Thu, 10 Oct 2024 16:21:27 -0700 [thread overview]
Message-ID: <CACw3F53CVOVH1NeaAuXeacvgpxVyZ=dfOeacSTX-HLWhPdaHPw@mail.gmail.com> (raw)
In-Reply-To: <7658ca1f-1b3b-4352-93d9-66f8dfd28408@oracle.com>
On Mon, Oct 7, 2024 at 10:24 AM <jane.chu@oracle.com> wrote:
>
> On 10/3/2024 4:51 PM, Jiaqi Yan wrote:
> > soned page (sub- or huge-) will eventually be isolated, because,
> > The code here is "global policy". The "per-VMA policy", proposed in
> > 0/2 but code not sent, should be able to support isolation + offline
> > at some point (all VMAs are gone and page becomes free).
> "per-VMA policy" sounds interesting.
> >> Another thing I'm curious at is whether you have tested with real
> >> hardware UE - the one that triggers MCE. When a real UE is consumed by
> > Yes, with our workload. Can you share more about what is the "training
> > process"? Is it something to train memory or screen memory errors?
>
> The cover letter mentioned "Machine Learning (ML) workloads", so I used
> it as an example.
Got you. In that case, if the ML workload (running in a VM) wants to
do what you described, wouldn't losing 1G hugetlb page due to kernel
offline make the VM/workload even harder to execute recover logic?
>
> -jane
>
next prev parent reply other threads:[~2024-10-10 23:21 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-24 4:39 [RFC PATCH v1 0/2] Userspace Can Control Memory Failure Recovery Jiaqi Yan
2024-09-24 4:39 ` [RFC PATCH v1 1/2] mm/memory-failure: introduce global MFR policy Jiaqi Yan
2024-10-02 23:50 ` jane.chu
2024-10-03 23:51 ` Jiaqi Yan
2024-10-07 17:24 ` jane.chu
2024-10-10 23:21 ` Jiaqi Yan [this message]
2024-10-11 18:28 ` jane.chu
2024-10-11 19:44 ` Luck, Tony
2024-10-11 20:15 ` jane.chu
2024-10-15 23:45 ` Jiaqi Yan
2024-10-15 23:56 ` Luck, Tony
2024-10-16 0:19 ` jane.chu
2024-10-11 7:04 ` Miaohe Lin
2024-10-15 23:58 ` Jiaqi Yan
2024-09-24 4:39 ` [RFC PATCH v1 2/2] docs: mm: add enable_hard_offline sysctl Jiaqi Yan
2024-10-02 15:02 ` [RFC PATCH v1 0/2] Userspace Can Control Memory Failure Recovery Jason Gunthorpe
2024-10-03 22:45 ` Jiaqi Yan
2024-10-03 22:58 ` Luck, Tony
2024-10-03 23:19 ` Jiaqi Yan
2024-10-03 23:19 ` Jason Gunthorpe
2024-10-04 18:32 ` Jiaqi Yan
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