[PATCH v2 1/2] fadump: reduce memory consumption for capture kernel

Michael Ellerman mpe at ellerman.id.au
Wed Apr 19 14:19:47 AEST 2017


Michal Suchánek <msuchanek at suse.de> writes:
> On Mon, 17 Apr 2017 20:43:02 +0530
> Hari Bathini <hbathini at linux.vnet.ibm.com> wrote:
>> On Friday 14 April 2017 01:28 AM, Michal Suchánek wrote:
>> > more (optional) properties cannot be added?  
>> 
>> Kernel change seems simple over f/w enhancement..
>
> That certainly looks so when you are a kernel developer and can
> implement the change yourself compared to convincing some firmware
> developer that this feature makes sense.
>
> On the other hand, the proposed kernel-only solution introduces
> requirement that the maintainer does not like.
>
> For the platform as a whole does it make more sense to add a hack to
> the kernel or does it make sense to enhance the firmware to provide
> more options for firmware-assisted dump?

Unfortunately it doesn't really matter, because there is firmware out
there that implements the current behaviour and will never be updated.
So we have to work with what's there.

I don't think fadump_append is a hack, though it's not pretty I'll
admit.

cheers


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