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x86, realmode: Relocator for realmode code

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Implements relocator for real mode code that is called
as part of setup_arch(). Processes segment relocations
and linear relocations. Real-mode code is relocated to
a free hole below 1 MB.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@intel.com>
Link: http://lkml.kernel.org/r/1336501366-28617-4-git-send-email-jarkko.sakkinen@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
Jarkko Sakkinen
2012-05-08 21:22:26 +03:00
committed by H. Peter Anvin
parent b3266bd6ff
commit 084ee1c641
4 changed files with 108 additions and 0 deletions
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arch/x86/kernel/setup.c
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@@ -74,6 +74,7 @@
#include <asm/mtrr.h>
#include <asm/apic.h>
#include <asm/trampoline.h>
#include <asm/realmode.h>
#include <asm/e820.h>
#include <asm/mpspec.h>
#include <asm/setup.h>
@@ -918,6 +919,7 @@ void __init setup_arch(char **cmdline_p)
max_pfn_mapped<<PAGE_SHIFT);
setup_trampolines();
setup_real_mode();
init_gbpages();