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x86_64/setup: unconditionally populate the pgd

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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>
This commit is contained in:
Jeremy Fitzhardinge 2008-07-01 16:46:33 -07:00 committed by Ingo Molnar
parent aea5f9f89b
commit 574977a2ed
1 changed files with 2 additions and 3 deletions
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5
arch/x86/mm/init_64.c
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@ -616,9 +616,8 @@ unsigned long __init_refok init_memory_mapping(unsigned long start, unsigned lon
last_map_addr = phys_pud_init(pud, __pa(start), __pa(next));
unmap_low_page(pud);
if (!after_bootmem)
pgd_populate(&init_mm, pgd_offset_k(start),
__va(pud_phys));
pgd_populate(&init_mm, pgd_offset_k(start),
__va(pud_phys));
}
if (!after_bootmem)