[edk2-devel] [PATCH v2 1/1] OvmfPkg: Introduce 16MiB flash size for (primarily) Linuxboot

[Devon Bautista]

> So DXEFV needs more space then.  I'm wondering that the size doesn't
> change according to the commit message.  Looking at the fdf files it
> seems PEIFV and DXEFV don't have a fixed size, seems everything is
> fine as long as the compressed image fits into FVMAIN_COMPACT.
> 
> take care,
>   Gerd
> 
DXEFV would indeed need more space, but I recall that in the first
version of this patch, Laszlo commented:

> (2) [FD.MEMFD] should immediately benefit from this change, even if
> your downstream populates FVMAIN_COMPACT with something else than
> PEIFV and DXEFV. First, we're almost out of (uncompressed) DXEFV space
> again.
> Second, especially the confidential computing technologies have been
> gobbling up the nice, low, free space in FD.MEMFD the way a kid with a
> sweet tooth empties a cookie jar. This change is already compat
> breaking, so I'd like to see *some* proposal (separate patches) for
> enlarging *and pushing up* PEIFV and DXEFV.

For the latter point, I figured that it might be beneficial to expand
FVMAIN_COMPACT as a whole to allow for the possibility of growing either
DXEFV _or_ PEIFV, or both.

Best,
Devon



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