x86_64/setup: unconditionally populate the pgd
When allocating a new pud, unconditionally populate the pgd (why did we bother to create a new pud if we weren't going to populate it?). This will only happen if the pgd slot was empty, since any existing pud will be reused. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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1 changed files with 2 additions and 3 deletions
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@ -616,9 +616,8 @@ unsigned long __init_refok init_memory_mapping(unsigned long start, unsigned lon
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last_map_addr = phys_pud_init(pud, __pa(start), __pa(next));
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unmap_low_page(pud);
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if (!after_bootmem)
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pgd_populate(&init_mm, pgd_offset_k(start),
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__va(pud_phys));
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pgd_populate(&init_mm, pgd_offset_k(start),
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__va(pud_phys));
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}
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if (!after_bootmem)
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