Re: [Xen-devel] [PATCH v7 4/5] ix86/ioreq server: Asynchronously reset outstanding p2m_ioreq_server entries.

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 11.03.17 at 09:42, <yu.c.zhang@xxxxxxxxxxxxxxx> wrote:
> On 3/11/2017 12:03 AM, Jan Beulich wrote:
>> But there's a wider understanding issue I'm having here: What is
>> an "entry" here? Commonly I would assume this to refer to an
>> individual (4k) page, but it looks like you really mean table entry,
>> i.e. possibly representing a 2M or 1G page.
> 
> Well, it should be an entry pointing to a 4K page(only).
> For p2m_ioreq_server, we shall not meet huge page. Because they are 
> changed from p2m_ram_rw pages
> in set_mem_type() -> p2m_change_type_one(), which calls p2m_set_entry() 
> with PAGE_ORDER_4K specified.

And recombination of large pages won't ever end up hitting these?

Jan


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