Re: [PATCHv7 01/19] mm/sparsemem: Allocate mem_section at runtime for SPARSEMEM_EXTREME

[Ingo Molnar]

* Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> wrote:

> Size of mem_section array depends on size of physical address space.
> 
> In preparation for boot-time switching between paging modes on x86-64
> we need to make allocation of mem_section dynamic.
> 
> The patch allocates the array on the first call to
> sparse_memory_present_with_active_regions().
> 
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>

What is the size of the allocations here, in bytes, for the two main variants?

Thanks,

	Ingo