Re: [PATCH V4 2/3] arm64: support initrd outside kernel linear map

From	Russell King - ARM Linux <linux@arm.linux.org.uk>
Newsgroups	linux.kernel
Subject	Re: [PATCH V4 2/3] arm64: support initrd outside kernel linear map
Date	2015-10-08 11:50 +0200
Message-ID	<qhfZN-88e-31@gated-at.bofh.it> (permalink)
References	(2 earlier) <q6ppL-2YE-3@gated-at.bofh.it> <qgE49-49R-11@gated-at.bofh.it> <qgE49-49R-17@gated-at.bofh.it> <qhf3J-6MG-17@gated-at.bofh.it> <qhfwJ-7zW-13@gated-at.bofh.it>
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On Thu, Oct 08, 2015 at 05:18:14PM +0800, yalin wang wrote:
> is it also possible to implement it on ARM platforms?
> ARM64 platform don’t have HIGH_MEM zone .
> but ARM platform have .
> i remember boot loader must put init rd  into low memory region,
> so if some boot loader put init rd into HIGH men zone
> we can also relocate it to low men region ?
> then boot loader don’t need care about this ,
> and since vmalloc= boot option will change HIGH mem region size,
> if we can relocate init rd , boot loader don’t need care about init rd load address,
> when change vmalloc= boot options .

I'd be more inclined to say yes if the kernel wasn't buggering around
passing virtual addresses (initrd_start) of the initrd image around,
but instead used a physical address.  initrd_start must be a lowmem
address.

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Re: [PATCH V4 2/3] arm64: support initrd outside kernel linear map Mark Rutland <mark.rutland@arm.com> - 2015-10-06 19:20 +0200
  Re: [PATCH V4 2/3] arm64: support initrd outside kernel linear map Mark Salter <msalter@redhat.com> - 2015-10-06 19:20 +0200
    Re: [PATCH V4 2/3] arm64: support initrd outside kernel linear map Christoffer Dall <christoffer.dall@linaro.org> - 2015-10-08 10:50 +0200
      Re: [PATCH V4 2/3] arm64: support initrd outside kernel linear map yalin wang <yalin.wang2010@gmail.com> - 2015-10-08 11:20 +0200
        Re: [PATCH V4 2/3] arm64: support initrd outside kernel linear map Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-10-08 11:50 +0200

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