linux-kernel - Re: [PATCH v3 09/17] arm64, trans_pgd: add trans_pgd_create

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Date:   Fri, 6 Sep 2019 15:00:05 -0400
From:   Pavel Tatashin <pasha.tatashin@...een.com>
To:     James Morse <james.morse@....com>
Cc:     James Morris <jmorris@...ei.org>, Sasha Levin <sashal@...nel.org>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        kexec mailing list <kexec@...ts.infradead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Jonathan Corbet <corbet@....net>,
        Catalin Marinas <catalin.marinas@....com>, will@...nel.org,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Marc Zyngier <marc.zyngier@....com>,
        Vladimir Murzin <vladimir.murzin@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Bhupesh Sharma <bhsharma@...hat.com>,
        linux-mm <linux-mm@...ck.org>,
        Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH v3 09/17] arm64, trans_pgd: add trans_pgd_create_empty

On Fri, Sep 6, 2019 at 11:20 AM James Morse <james.morse@....com> wrote:
>
> Hi Pavel,
>
> On 21/08/2019 19:31, Pavel Tatashin wrote:
> > This functions returns a zeroed trans_pgd using the allocator that is
> > specified in the info argument.
> >
> > trans_pgds should be created by using this function.
>
> This function takes the allocator you give it, and calls it once.
>
> Given both users need one pgd, and have to provide the allocator, it seems strange that
> they aren't trusted to call it.
>
> I don't think this patch is necessary.
>
> Let the caller pass in the pgd_t to the helpers.

Ok.

Thank you,
Pasha