It is up to the guest to request the TLB flushes that it needs. Xen performs
the flushes it needs only for its own safety.
On 17/05/2013 00:57, "Xinxin Jin" <xinxinjin89@gmail.com> wrote:
> Hi, I read the code of the hypercall handler do_mmu_update(), which updates
> guests'' page table. I thought after update it should flush the old
mapping
> from relative TLB entry. However I didn''t find any TLB flush
operations in
> this function. Could anyone explain what is the reason behind ? Thanks a
lot !
>
> Xinxin
>
>
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