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ACPI: Add support to parse 2nd MADT
authorLen Brown <len.brown@intel.com>
Sun, 11 Mar 2007 07:26:14 +0000 (03:26 -0400)
committerLen Brown <len.brown@intel.com>
Sun, 11 Mar 2007 07:30:13 +0000 (03:30 -0400)
commita1fdcc0d2714b6622e3fd5c00db1635213d6c41a
treebf1176f07ff83eebb41d1a292a62124680b81949tree | snapshot
parentbe521466feb3bb1cd89de82a2b1d080e9ebd3cb6commit | diff
ACPI: Add support to parse 2nd MADT

When a BIOS bug presents multiple APIC/MADTs,
Linux currently uses the 1st and ignores the 2nd.

But some machines work better if we use the 2nd.

http://bugzilla.kernel.org/show_bug.cgi?id=7465

Add a warning and boot parameter "acpi_apic_instance=2"
to allow parsing the 2nd.

No change to default behaviour in this patch.

Signed-off-by: Len Brown <len.brown@intel.com>
Documentation/kernel-parameters.txt diff | blob | history
drivers/acpi/tables.c diff | blob | history
DSM-G600 Linux 2.6