Shaohua Li wrote:
>>>
>>>
>> You're not removing any shadows of the page, in case that page is a
>> guest page table. But I don't see anything wrong with it -- the page
>> won't change while it's in swap.
>>
> You are right. Should we?
>
I don't think so. It's just strange to have shadows for a guest page
that is swapped out, so I pointed that out. But as the page cannot
change in swap, everything is safe. I guess that kernel page tables
could be swapped out after a short while in a guest that doesn't swap
its own kernel pages.
--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.
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