Messages in this thread | | | Date | Tue, 12 Jan 2010 11:10:19 -0800 | Subject | Re: [PATCH] Make Intel 8-way Xeons boot again | From | Yinghai Lu <> |
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if the system can not use logical flat.
should have some bit set in FADT...
static int physflat_acpi_madt_oem_check(char *oem_id, char *oem_table_id) { #ifdef CONFIG_ACPI /* * Quirk: some x86_64 machines can only use physical APIC mode * regardless of how many processors are present (x86_64 ES7000 * is an example). */ if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID && (acpi_gbl_FADT.flags & ACPI_FADT_APIC_PHYSICAL)) { printk(KERN_DEBUG "system APIC only can use physical flat"); return 1; } #endif
return 0; }
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