Commit fea24e28 authored by Jacob Pan's avatar Jacob Pan Committed by H. Peter Anvin

x86, mrst: add nop functions to x86_init mpparse functions

Moorestown does not have BIOS provided MP tables, we can save some time
by avoiding scaning of these tables. e.g.
[    0.000000] Scan SMP from c0000000 for 1024 bytes.
[    0.000000] Scan SMP from c009fc00 for 1024 bytes.
[    0.000000] Scan SMP from c00f0000 for 65536 bytes.
[    0.000000] Scan SMP from c00bfff0 for 1024 bytes.

Searching EBDA with the base at 0x40E will also result in random pointer
deferencing within 1MB. This can be a problem in Lincroft if the pointer
hits VGA area and VGA mode is not enabled.
Signed-off-by: default avatarJacob Pan <>
LKML-Reference: <>
Acked-by: default avatarThomas Gleixner <>
Signed-off-by: default avatarH. Peter Anvin <>
parent e4af4268
......@@ -237,4 +237,9 @@ void __init x86_mrst_early_setup(void)
x86_init.pci.fixup_irqs = x86_init_noop;
legacy_pic = &null_legacy_pic;
/* Avoid searching for BIOS MP tables */
x86_init.mpparse.find_smp_config = x86_init_noop;
x86_init.mpparse.get_smp_config = x86_init_uint_noop;
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