From: Jan Beulich <jbeulich@novell.com>
Date: Thu, 21 Aug 2008 13:27:22 +0000 (+0100)
Subject: x86: fix 1:1 mapping init on 64-bit (memory hotplug case)
X-Git-Tag: v2.6.27-rc5~50^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8ae3a5a8dff2c92bd1087bb97c4a3bb61174303e;p=pandora-kernel.git

x86: fix 1:1 mapping init on 64-bit (memory hotplug case)

While I don't have a hotplug capable system at hand, I think two issues need
fixing:

- pud_phys (in kernel_physical_ampping_init()) would remain uninitialized in
  the after_bootmem case

- the locking done just around phys_pmd_{init,update}() would leave out pgd
  updates, and it was needlessly covering code portions that do allocations
  (perhaps using a more friendly gfp value in alloc_low_page() would then be
  possible)

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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