linux-kernel - Re: [PATCH v9 02/11] kexec_file: make kexec_image_post_load_cleanup

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Message-ID: <20180507044050.GC11326@linaro.org>
Date:   Mon, 7 May 2018 13:40:51 +0900
From:   AKASHI Takahiro <takahiro.akashi@...aro.org>
To:     James Morse <james.morse@....com>
Cc:     catalin.marinas@....com, will.deacon@....com, dhowells@...hat.com,
        vgoyal@...hat.com, herbert@...dor.apana.org.au,
        davem@...emloft.net, dyoung@...hat.com, bhe@...hat.com,
        arnd@...db.de, ard.biesheuvel@...aro.org, bhsharma@...hat.com,
        kexec@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v9 02/11] kexec_file: make
 kexec_image_post_load_cleanup_default() global

On Tue, May 01, 2018 at 06:46:04PM +0100, James Morse wrote:
> Hi Akashi,
> 
> On 25/04/18 07:26, AKASHI Takahiro wrote:
> > Change this function from static to global so that arm64 can implement
> > its own arch_kimage_file_post_load_cleanup() later using
> > kexec_image_post_load_cleanup_default().
> 
> Do we need to call kexec_image_post_load_cleanup_default()? All it does is call
> the image-type fops->cleanup(), which you don't implement in this series.
> 
> Is this just-in-case someone adds cleanup() later and is surprised only the
> arch-level helper is called?

Yes, we want not to miss two possibilities:
- some common clean-up code is added to kexec_image_post_load_cleanup_default()
- some format(i.e. Image)-specific clean-up code is added to fops->cleanup()

-Takahiro AKASHI

> 
> 
> Thanks,
> 
> James