linux-kernel - Re: [PATCH v3 04/17] arm64, hibernate: rename dst to page in create_safe_exec

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Message-ID: <CA+CK2bDU9ZZbXsqfEzMV9JDRUq0vMRNHObpQ0q-YtwbEbq702w@mail.gmail.com>
Date:   Fri, 6 Sep 2019 11:41:03 -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 04/17] arm64, hibernate: rename dst to page in create_safe_exec_page

On Fri, Sep 6, 2019 at 11:17 AM James Morse <james.morse@....com> wrote:
>
> Hi Pavel,
>
> On 21/08/2019 19:31, Pavel Tatashin wrote:
> > create_safe_exec_page() allocates a safe page and maps it at a
> > specific location, also this function returns the physical address
> > of newly allocated page.
> >
> > The destination VA, and PA are specified in arguments: dst_addr,
> > phys_dst_addr
> >
> > However, within the function it uses "dst" which has unsigned long
> > type, but is actually a pointers in the current virtual space. This
> > is confusing to read.
>
> The type? There are plenty of places in the kernel that an unsigned-long is actually a
> pointer. This isn't unusual.
>
>
> > Rename dst to more appropriate page (page that is created), and also
> > change its time to "void *"
>
> If you think its clearer,
> Reviewed-by: James Morse <james.morse@....com>

Thank you for your review.

Pasha