Revert "x86: create a non-zero sized bm_pte only when needed"

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This reverts commit 698609bdcd.

69860 breaks Xen booting, as it relies on head*.S to set up the fixmap
pagetables (as a side-effect of initializing the USB debug port).
Xen, however, does not boot via head*.S, and so the fixmap area is
not initialized.

The specific symptom of the crash is a fault in dmi_scan(), because
the pointer that early_ioremap returns is not actually present.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Jan Beulich <jbeulich@novell.com>
LKML-Reference: <49C43A8E.5090203@goop.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

...

This commit is contained in:

Jeremy Fitzhardinge 2009-03-20 17:53:34 -07:00 • committed by Ingo Molnar

parent 0f3507555f

commit 45c7b28f3c

1 changed files with 3 additions and 16 deletions

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arch/x86/mm/ioremap.c

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