Date: Fri, 18 Dec 2015 00:40:07 +0100
From: "Luis R. Rodriguez" <mcgrof@suse.com>
To: Andy Lutomirski <luto@amacapital.net>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
        "Luis R. Rodriguez" <mcgrof@do-not-panic.com>,
        Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>,
        Borislav Petkov <bp@alien8.de>,
        Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
        Rusty Russell <rusty@rustcorp.com.au>,
        Boris Ostrovsky <boris.ostrovsky@oracle.com>, mcb30@ipxe.org,
        Juergen Gross <jgross@suse.com>, Jan Beulich <JBeulich@suse.com>,
        Joerg Roedel <joro@8bytes.org>,
        Andrey Ryabinin <ryabinin.a.a@gmail.com>,
        Andrey Konovalov <andreyknvl@google.com>, long.wanglong@huawei.com,
        qiuxishi@huawei.com, Andrey Ryabinin <aryabinin@virtuozzo.com>,
        Mauro Carvalho Chehab <mchehab@osg.samsung.com>,
        valentinrothberg@gmail.com, peter.senna@gmail.com,
        Michal Marek <mmarek@suse.com>, X86 ML <x86@kernel.org>,
        Xen Devel <xen-devel@lists.xensource.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [RFC v1 5/8] x86/init: move ebda reservations into linker table
Message-ID: <20151217234007.GW20409@wotan.suse.de>
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On Thu, Dec 17, 2015 at 12:57:49PM -0800, Andy Lutomirski wrote:
> On Thu, Dec 17, 2015 at 12:55 PM, H. Peter Anvin <hpa@zytor.com> wrote:
> > On 12/17/15 12:48, Andy Lutomirski wrote:
> >>
> >> I'm entirely ignorant of anything going on in gPXE/iPXE.
> >>
> >> Can you explain what a linker table *does*?  It looks like all you've
> >> done in this patch is to move code around.  What actually happens?
> >>
> >
> > A linker table is a data structure that is stitched together from items
> > in multiple object files.
> >
> > We already have a *bunch* of linker tables in Linux, mostly the init
> > tables, but they are all built in an ad hoc manner which requires linker
> > script modifications, which are of course per architecture.
> >
> > My desire would be to make a general linker table facility so that a new
> > linker table can be implemented by changing C code only.
> 
> Sounds good to me.

That's what this actually accomplishes, there are just a few caveats to consider,
more on this shortly on the other thread in this patch series.

  Luis
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