[OpenWrt-Devel] [PATCH] config: enable some useful features on !SMALL_FLASH devices

[Jonas Gorski]

On Mon, 7 Jan 2019 at 11:42, Petr Štetiar <ynezz at true.cz> wrote:
>
> Daniel Golle <daniel at makrotopia.org> [2019-01-07 10:03:09]:
>
> Hi,
>
> > One. The MT7621 EVB. The TP-LINK RE350 v1 can probably be converted to
> > a more sane flash partition layout to gain another megabyte or so.
>
> I've looked only at mt7621, so this was just example from one subtarget of
> ramips target. So I tend to believe, that there's quite more such cases hidden
> in the tree. Please correct me if I'm wrong.
>
> > Why specific devices? Wouldn't all devices with the resources (which
> > boils down to !SMALL_FLASH) be potentially more useful with those
> > kernel features enabled?
>
> You currently can't use !SMALL_FLASH, because this is target/subtarget
> specific feature, not per device feature. I think, that in order to use this
> feature, you would need to convert/fix all devices like that TP-Link RE350
> from all (sub)targets into tiny subtarget and then you could freely use
> !SMALL_FLASH.

I agree with not abusing small_flash for that. It has a clear defined
meaning, and shouldn't have unrelated side effects.

I think a new opt-in symbol for those targets with hardware
virtualization support and/or beefy enough cpus would make more sense.
Those virtualization options (probably) don't come for free, they will
have also a memory and performance impact even when not actively used.
How much that is (and if this assumption is true) would be nice to
have in the PR/patch for it.


Regards
Jonas

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