Starting in 20.0.0, the browser needs more applet memory to function, so we can't steal as much any more.
Thus, we now steal 14 MB on 20.0.0+ instead of 40MB.
However, since this reduces memory available for custom system modules, we are adjusting to compensate.
ams.mitm's heap size has been reduced from 32MB to 12MB (recovering 20MB).
In addition, fs.mitm now uses a new mechanism for stealing memory from the applet pool while romfs is being built.
On net, we are compromising:
* Custom sysmodules lose memory available to them.
On 19.0.0/AMS 1.8.0, there was 30 MB available for custom sysmodules.
Stealing 14 MB instead of 40 MB, we lose 26 MB of that. Reducing ams.mitm's usage will gain us back 20.
Nintendo also appears to...use 4 extra MB, in 20.0.0, from my test homebrew.
So on 20.0.0/AMS 1.9.0, there should be 20 MB available for custom sysmodules.
On the bright side, on <20.0.0/AMS 1.9.0, I guess there will be 50 MB available for custom sysmodules now?
* totk mods will lose the ability to...put every file in the romfs on sd card. There will be some unknown maximum filecount for totk mods.
On the bright side, implementing the transient memory stealing should improve compatibility for some mods which strictly add files?
This change was made for #2255, but the issue creator never confirmed if it resolved the issue.
This *does* better reflect what Nintendo's pm does, though, so I'm going to commit it regardless.
* fs.mitm: skeleton the use of special allocation in romfs build
* pm: add api for ams.mitm to steal application memory
* pm/mitm: okay, that api won't work, try a different one
* romfs: revert memory usage increases; we'll handle torture games case-by-case.
* pm/romfs: first (broken?) pass at dynamic heap.
I cannot wait to figure out all the ways this is wrong.
* Release the dynamic heap a little more eagerly
* romfs: animal crossing is also not a nice game
* romfs: fix issues in close-during-build
* romfs: zelda is a blight upon this earth
* result: try out some experimental shenanigans
* result: sketch out some more shenanigans
* result: see what it looks like to convert kernel to use result conds instead of guards
* make rest of kernel use experimental new macro-ing
* sf: Begin experimenting with new interface declaration format
* sf: convert fs interfaces to new format
* sf: finish conversion of libstrat to new definitions
* sf: convert loader to new format
* sf: convert spl to new format
* sf: update ncm for new format
* sf: convert pm to new format
* sf: convert ro/sm to new format
* sf: update fatal for new format
* sf: support building dmnt under new scheme
* sf: update ams.mitm for new format
* sf: correct invocation def for pointer holder
* fs: correct 10.x+ user bindings for Get*SpaceSize
Michael Scire