On Sun, 27 Sep 2026 23:26:31 -0400 Martin Cracauer <[email protected]> wrote:
> Add a test that asserts that functionality needed for generational
> garbage collection works. Namely to implement a write barrier using
> userfaultfd instead of using segmentation faults. The planned target
> is the GC in SBCL.
>
> The real GC will initially fill heap pages by using on-demand loading
> of pages from an image file, either via mmap(2) or using userfaultfd
> to decompress a page read from an image file made from individually
> compressed blocks. This test doesn't do that so that it needs no disk
> I/O and no decompression library. Instead, a fault will be filled by
> copying page content from prepared pages in the heap.
Thanks. Sashiko asked a couple of things:
https://sashiko.dev/#/patchset/[email protected]
