Re: [PATCH v7 0/4] support reserving crashkernel above 4G on arm64 kdump

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Hi Arnd,

On 2020/5/19 18:21, Arnd Bergmann wrote:
> On Thu, Mar 26, 2020 at 4:10 AM Chen Zhou <chenzhou10@xxxxxxxxxx> wrote:
>> Hi all,
>>
>> Friendly ping...
> I was asked about this patch series, and see that you last posted it in
> December. I think you should rebase it to linux-5.7-rc6 and post the
> entire series again to make progress, as it's unlikely that any maintainer
> would pick up the patches from last year.
>
> For the contents, everything seems reasonable to me, but I noticed that
> you are adding a property to the /chosen node without adding the
> corresponding documentation to
> Documentation/devicetree/bindings/chosen.txt
>
> Please add that, and Cc the devicetree maintainers on the updated
> patch.
>
>          Arnd

Thanks for your review and comments, i will rebase it to linux-5.7-rc6 and add the
corresponding documentation.

Thanks,
Chen Zhou

>> On 2019/12/23 23:23, Chen Zhou wrote:
>>> This patch series enable reserving crashkernel above 4G in arm64.
>>>
>>> There are following issues in arm64 kdump:
>>> 1. We use crashkernel=X to reserve crashkernel below 4G, which will fail
>>> when there is no enough low memory.
>>> 2. Currently, crashkernel=Y@X can be used to reserve crashkernel above 4G,
>>> in this case, if swiotlb or DMA buffers are required, crash dump kernel
>>> will boot failure because there is no low memory available for allocation.
>>>
>>> The previous changes and discussions can be retrieved from:
>>>
>>> Changes since [v6]
>>> - Fix build errors reported by kbuild test robot.
> ...
>
> .
>





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