linux-kernel - Re: [PATCH 0/2] arm64: support initrd outside of mapped RAM

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Message-ID: <20150728151447.GF15213@leverpostej>
Date:	Tue, 28 Jul 2015 16:14:47 +0100
From:	Mark Rutland <mark.rutland@....com>
To:	Mark Salter <msalter@...hat.com>
Cc:	Catalin Marinas <Catalin.Marinas@....com>,
	Will Deacon <Will.Deacon@....com>,
	Arnd Bergmann <arnd@...db.de>,
	Ard Biesheuvel <ard.biesheuvel@...aro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>
Subject: Re: [PATCH 0/2] arm64: support initrd outside of mapped RAM

> > >  arch/arm64/kernel/setup.c           | 55 
> > > +++++++++++++++++++++++++++++++++++++
> > >  include/asm-generic/early_ioremap.h |  6 ++++
> > >  mm/early_ioremap.c                  | 22 +++++++++++++++
> > >  3 files changed, 83 insertions(+)
> > 
> > Any reason for not moving x86 over to the new generic version?
> 
> I have a patch to do that but I'm not sure how to contrive a
> testcase to exercise it.

The easiest option might be to hack up KVM tool [1] to load a kernel an
initrd at suitable addresses.

Otherwise I'm sure someone else must have a way of exercising this.

Mark.

[1] https://git.kernel.org/cgit/linux/kernel/git/will/kvmtool.git/
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