On Thu, Sep 28, 2017 at 10:07:11AM +0200, Ingo Molnar wrote: > > * Kirill A. Shutemov <[email protected]> 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 <[email protected]> > > What is the size of the allocations here, in bytes, for the two main variants?
For 4-level paging it's 32k. For 5-level paging it's 2M. -- Kirill A. Shutemov
