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Subject: Re: [PATCH v12 08/16] arm64/kexec: Add core kexec support
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From: Azriel Samson <asamson@codeaurora.org>
Message-ID: <5660E0B0.8010507@codeaurora.org>
Date: Thu, 3 Dec 2015 17:39:12 -0700
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To: Geoff Levand <geoff@infradead.org>
Cc: 'Mark Rutland' <mark.rutland@arm.com>, 'Pratyush Anand' <panand@redhat.com>, marc.zyngier@arm.com, 'Catalin Marinas' <catalin.marinas@arm.com>, 'Will Deacon' <will.deacon@arm.com>, 'AKASHI Takahiro' <takahiro.akashi@linaro.org>, linux-arm-kernel@lists.infradead.org, 'Dave Young' <dyoung@redhat.com>, kexec@lists.infradead.org, christoffer.dall@linaro.org

Hi,

On 12/3/2015 12:56 PM, Geoff Levand wrote:
> Hi,
>
> On Wed, 2015-12-02 at 21:37 -0700, Azriel Samson wrote:
>> For kdump, I also require a version of the patch "arm64/kexec: Add support
>> for kexec-lite". Without this, the dump capture kernel cannot find the
>> device tree even on v11 that I tested.

This was a setup issue on my side. kdump with your v11 patches worked 
fine without the above patch when I used your version of kexec-tools.

In kexec-tools, I had to skip check_cpu_nodes() since we are using ACPI 
and the device tree does not contain cpu_info.

>
> Without that patch, does the 2nd stage kernel get the correct
> dtb address in register x0?
>
> Is the problem that the dtb data is corrupt when in the 2nd
> stage kernel?
>
> Is the dtb data OK when in the 1st stage kernel?
>
> -Geoff
>

Thanks,
Azriel Samson
Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

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