[Xen-devel] Questions about xen memory management

[Josh Zhao <joshsystem@xxxxxxxxx>]

Hi,

I am reading the arm MM initial code, there are 2 questions I can't understand:

1)  Both init_xenheap_pages() and init_domheap_pages() will invoke init_heap_pages() to initialize pages management.  But there is no flag to know those pages are belonged to xenheap or domheap.  Are xenhelp and domheap in the same zone?

2) What's the vmap.c used for ? I saw that only the ioremap will use it.  If so, it seems no needs to allocate pages to fill the all VMAP range (256M -  1G) by alloc_domheap_page().

Thanks,

Josh

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