Markbits on read only pages are initialized BLACK and never change. For
any practical purposes they are unused.
This CL prevents any access to the markbits of these pages. This is a
precursor to removing them entirely from the page to make room for
static roots.
Bug: v8:13466
Change-Id: I61d3f6d9bbca750d0f34475859b34ff44f7fec1e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4212397
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Auto-Submit: Olivier Flückiger <olivf@chromium.org>
Commit-Queue: Olivier Flückiger <olivf@chromium.org>
Cr-Commit-Position: refs/heads/main@{#85665}
a2f63f1886