Re: [PATCH v2] mm: kfence: allocate kfence_metadata at runtime

[Peng Zhang]

在 2023/7/12 17:30, Alexander Potapenko 写道:
> > Below is the numbers obtained in qemu (with default 256 objects).
> > before: Memory: 8134692K/8388080K available (3668K bss)
> > after: Memory: 8136740K/8388080K available (1620K bss)
> > More than expected, it saves 2MB memory. It can be seen that the size
> > of the .bss section has changed, possibly because it affects the linker.
>
> The size of .bss should only change by ~288K. Perhaps it has crossed
> the alignment boundary for .bss, but this effect cannot be guaranteed
> and does not depend exclusively on this patch.
> I suggest that you omit these lines from the patch description, as
> they may confuse the readers.
Ok, I'll revise it to avoid confusion.