linux-kernel - Re: [PATCH v10 7/8] hugetlb_cgroup: Add hugetlb

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Message-ID: <CAHS8izNmhxja_0+b2DudpXB+1DQfpnjUu+Qak+wnsApgYrvU=Q@mail.gmail.com>
Date:   Thu, 23 Jan 2020 12:05:30 -0800
From:   Mina Almasry <almasrymina@...gle.com>
To:     Sandipan Das <sandipan@...ux.ibm.com>
Cc:     Mike Kravetz <mike.kravetz@...cle.com>,
        David Rientjes <rientjes@...gle.com>,
        Shakeel Butt <shakeelb@...gle.com>, shuah <shuah@...nel.org>,
        Greg Thelen <gthelen@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        open list <linux-kernel@...r.kernel.org>, linux-mm@...ck.org,
        linux-kselftest@...r.kernel.org, cgroups@...r.kernel.org,
        Aneesh Kumar <aneesh.kumar@...ux.vnet.ibm.com>
Subject: Re: [PATCH v10 7/8] hugetlb_cgroup: Add hugetlb_cgroup reservation tests

On Thu, Jan 23, 2020 at 1:15 AM Sandipan Das <sandipan@...ux.ibm.com> wrote:
>
> For powerpc64, either 16MB/16GB or 2MB/1GB huge pages are supported depending
> on the MMU type (Hash or Radix). I was just running these tests on a powerpc64
> system with Hash MMU and ran into problems because the tests assume that the
> hugepage size is always 2MB. Can you determine the huge page size at runtime?
>

Absolutely. Let me try to reproduce this failure and it should be
fixed in the next patchset version.