x86: fix early_ioremap()/btmap

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fix a long-standing weakness of the early-ioremap allocator: it
uses a single pgd entry for the boot mappings, and was not properly
protecting itself against crossing a 2MB (4MB) boundary.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

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Ingo Molnar 2008-01-30 13:33:48 +01:00

parent d690b2afd5

commit d701fda860

1 changed files with 10 additions and 2 deletions

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include/asm-x86/fixmap_32.h

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