mirror of https://gitee.com/openkylin/linux.git
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: Jacob Pan <jacob.jun.pan@linux.intel.com> LKML-Reference: <1273873281-17489-8-git-send-email-jacob.jun.pan@linux.intel.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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@ -237,4 +237,9 @@ void __init x86_mrst_early_setup(void)
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x86_init.pci.fixup_irqs = x86_init_noop;
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legacy_pic = &null_legacy_pic;
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/* Avoid searching for BIOS MP tables */
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x86_init.mpparse.find_smp_config = x86_init_noop;
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x86_init.mpparse.get_smp_config = x86_init_uint_noop;
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}
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