Hello everyone,

I read the official blog about concurrent marking (Concurrent marking in V8 
ยท V8 <https://v8.dev/blog/concurrent-marking>).
I am confused about the implementation of the bailout worklist. The bailout 
list is markingworklist on_hold_  in the c++ code.

I noticed that v8 will move object whose address is between new_space_top 
and new_space_limit
src/heap/concurrent-marking.cc - v8/v8 - Git at Google (googlesource.com) 
<https://chromium.googlesource.com/v8/v8/+/refs/heads/main/src/heap/concurrent-marking.cc#490>

I don't understand this.  I found that the page of a semispace can be not 
contiguous, how to avoid page of old space being between this range?

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