Tate, Hongliang Tian

> > @lrh2000 #821 has a commit that shares mostly the same optimization idea as this PR. But I think this PR executes a slightly better. So let's discuss it...

@anbo225 Need to remove one of the two optimizations from this PR as @junyang-zh has added it in the new page table. We will merge this PR after the new...

> > @anbo225 Need to remove one of the two optimizations from this PR as @junyang-zh has added it in the new page table. We will merge this PR after...

> the kernel fails to invalidate TLB entries that are toxic. @junyang-zh I suspect that the new page table implementation is missing some necessary TLB flush. What do you think?

@cchanging Could you take a look at this PR?

@grief8 Need to rebase this PR

@lrh2000 To clarify, are you able to reproduce the problem or not? You have proposed to fix the problem with changes to compiler_builtins, but haven't yet confirmed @StevenJiang1110 's finding....

> https://github.com/asterinas/asterinas/pull/890 is another workaround. I don't have a strong preference between https://github.com/asterinas/asterinas/pull/890 and https://github.com/asterinas/asterinas/pull/845. But we have to admit that https://github.com/asterinas/asterinas/pull/890 is significantly simpler, isn't it? Sure. I have...

Good job on fixing the leakage problem! The code looks great. Just need to wait for #811 to be merged and rebase this PR on it.

@StevenJiang1110 Could you take a look at this PR?