linux-kernel - Re: Warning from free_init

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Date:   Tue, 27 Sep 2016 13:50:42 +0100
From:   "Richard W.M. Jones" <rjones@...hat.com>
To:     Sitsofe Wheeler <sitsofe@...il.com>
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        "H. Peter Anvin" <hpa@...or.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Brian C. Lane" <bcl@...hat.com>
Subject: Re: Warning from free_init_pages with large initrd

On Tue, Sep 27, 2016 at 11:20:06AM +0100, Sitsofe Wheeler wrote:
> (See http://www.gossamer-threads.com/lists/linux/kernel/2534175 for
> the history of this thread )
> 
> On 26 September 2016 at 20:00, Randy Dunlap <rdunlap@...radead.org> wrote:
> >
> > but the warning in free_init_pages() is about alignment, not size...
> > Maybe the concatenation is bad?
> 
> What would l have to pull apart to be able to tell?
> 
> Having said that I've just noticed that newer versions of the script
> concatenate an ISO to the initrd (rather than another cpio) -
> https://github.com/rhinstaller/livecd-tools/commit/8067be50907da9461e442c11a664c89e066ccac6#diff-88c69e43bb69726c532af3a136cc50e8
> . Unfortunately after rebuilding the initrd with the
> livecd-iso-to-pxeboot version from Fedora 24 the warning persists.
> CC'ing a few of the tool's authors on this email.

I would just comment that I wrote livecd-iso-to-pxeboot for
a specific purpose -- virt-p2v -- where the size of the ISO
rarely exceeded around 100-200 MB, which is large for an initramfs,
but about an order of magnitude smaller than what you are trying.

Rich.

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