linux-kernel - Re: [PATCH] arm64/hugetlb: fix CMA gigantic page order for non-4K PAGE

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Message-Id: <20211005135435.341477bb4b50b84202c32450@linux-foundation.org>
Date:   Tue, 5 Oct 2021 13:54:35 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Mike Kravetz <mike.kravetz@...cle.com>
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Anshuman Khandual <anshuman.khandual@....com>,
        Will Deacon <will@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Barry Song <song.bao.hua@...ilicon.com>, stable@...r.kernel.org
Subject: Re: [PATCH] arm64/hugetlb: fix CMA gigantic page order for non-4K
 PAGE_SIZE

On Tue,  5 Oct 2021 13:25:29 -0700 Mike Kravetz <mike.kravetz@...cle.com> wrote:

> For non-4K PAGE_SIZE configs, the largest gigantic huge page size is
> CONT_PMD_SHIFT order.

What are the user visible effects of this bug?