linux-kernel - Re: [PATCH] mm/page_alloc: fix a crash in free_pages

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Date:   Mon, 30 Sep 2019 07:22:23 -0400
From:   Qian Cai <cai@....pw>
To:     "Kirill A. Shutemov" <kirill@...temov.name>
Cc:     akpm@...ux-foundation.org, heiko.carstens@...ibm.com,
        gor@...ux.ibm.com, borntraeger@...ibm.com,
        linux-s390@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm/page_alloc: fix a crash in free_pages_prepare()

> On Sep 30, 2019, at 7:04 AM, Kirill A. Shutemov <kirill@...temov.name> wrote:
> 
> Looks like Power also uses the hook. Have you check that this patch will
> not affect Power?

Yes, I did. Although I did only test radix memory which seems just return immediately in arch_free_page(), I code-review the non-radix memory path and did not find anything suspicious. However, if really needed, I could test hash memory config or adding powerpc developers to double-check.