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

From	Ingo Molnar <mingo@kernel.org>
Newsgroups	linux.kernel
Subject	Re: [PATCHv7 01/19] mm/sparsemem: Allocate mem_section at runtime for SPARSEMEM_EXTREME
Date	2017-09-28 10:10 +0200
Message-ID	<uuC3o-6tW-3@gated-at.bofh.it> (permalink)
References	<ur1Wp-5gk-5@gated-at.bofh.it> <ur265-5yD-5@gated-at.bofh.it>
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* Kirill A. Shutemov <kirill.shutemov@linux.intel.com> 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@linux.intel.com>

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

Thanks,

	Ingo

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Re: [PATCHv7 01/19] mm/sparsemem: Allocate mem_section at runtime  for SPARSEMEM_EXTREME Ingo Molnar <mingo@kernel.org> - 2017-09-28 10:10 +0200
  Re: [PATCHv7 01/19] mm/sparsemem: Allocate mem_section at runtime  for SPARSEMEM_EXTREME "Kirill A. Shutemov" <kirill@shutemov.name> - 2017-09-28 11:10 +0200
    Re: [PATCHv7 01/19] mm/sparsemem: Allocate mem_section at runtime  for SPARSEMEM_EXTREME Ingo Molnar <mingo@kernel.org> - 2017-09-28 11:50 +0200

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