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(parent: 3d44cc3) | patch
ACPI: disable MPS when NO APIC-table found
authorLen Brown <len.brown@intel.com>
Tue, 23 Dec 2008 06:47:42 +0000 (01:47 -0500)
committerLen Brown <len.brown@intel.com>
Tue, 23 Dec 2008 06:47:42 +0000 (01:47 -0500)
commit7b37b5fd9ba32c0c5afc3537eed7e7466f2173e2
treeb90d287473c7a1d7e23981d13287523e219d6e5atree | snapshot
parent3d44cc3e01ee1b40317f79ed54324e25c4f848dfcommit | diff
ACPI: disable MPS when NO APIC-table found

When ACPI is asked to find an MADT (APIC table)
and fails, then ACPI expects to run in PIC mode.

However, if an MP Table is was found, IRQs will be
registered as if an IOAPIC is being used, even
though ACPI is configuring interrupt links links for PIC mode.

In this scenario, disable MPS so that IRQs
are registered in PIC mode, consistent with ACPI.

http://bugzilla.kernel.org/show_bug.cgi?id=12257

Signed-off-by: Len Brown <len.brown@intel.com>
arch/x86/kernel/acpi/boot.c diff | blob | history
Domain: System / Uncategorized;