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x86: limit scan to 1k of EBDA. 

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Alexey Starikovskiy 2008-03-17 22:08:24 +03:00 committed by Ingo Molnar
parent ce3fe6b2bf
commit 85e46035be
1 changed files with 3 additions and 1 deletions
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4
arch/x86/kernel/mpparse_64.c
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@ -640,11 +640,13 @@ static void __init __find_smp_config(unsigned reserve)
* trustworthy, simply because the SMP table may have been
* stomped on during early boot. These loaders are buggy and
* should be fixed.
*
* MP1.4 SPEC states to only scan first 1K of 4K EBDA.
*/
address = get_bios_ebda();
if (address)
smp_scan_config(address, 0x1000, reserve);
smp_scan_config(address, 0x400, reserve);
}
void __init early_find_smp_config(void)