Re: [Qemu-devel] TB Chaining NOT Reset on TLB Flush??

[Paul Brook]

> I read from the Qemu internal documentation this:
>     ``When MMU mappings change, only the chaining of the basic
>     blocks is reset (i.e. a basic block can no longer jump directly
>     to another one).''
>
> But when I read the code, I find that tlb_flush() doesn't reset the
> chaining between TBs. Is that the intended behaviour?? Won't that
> cause problems on guest context switch??

The internals documentation is out of date. TBs are only chained directly when 
both source and destination are on the same page.

Paul