Re: WARNING: MP table in the EBDA can be UNSAFE
Zwane Mwaikambo <[email protected]>
| Newsgroups | org.kernel.vger.linux-smp,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
On Fri, 5 Dec 2003, Paul Rolland wrote: > Our Linux, running on an IBM X-Series 445, says : > (excerpt from dmesg) : > > found SMP MP-table at 0009dd40 > hm, page 0009d000 reserved twice. > hm, page 0009e000 reserved twice. > hm, page 0009e000 reserved twice. > hm, page 0009f000 reserved twice. > WARNING: MP table in the EBDA can be UNSAFE, contact [email protected] if you experience SMP problems! This bit is ok and can be safely ignored. > LAPIC (acpi_id[0x0000] id[0x0] enabled[1]) > CPU 0 (0x0000) enabledProcessor #0 Pentium 4(tm) XEON(tm) APIC version 16 > > LAPIC (acpi_id[0x0001] id[0x12] enabled[1]) > CPU 1 (0x1200) enabled<4>Processor #18 INVALID - (Max ID: 16). > LAPIC (acpi_id[0x0002] id[0x20] enabled[1]) > CPU 1 (0x2000) enabled<4>Processor #32 INVALID - (Max ID: 16). > LAPIC (acpi_id[0x0003] id[0x32] enabled[1]) > CPU 1 (0x3200) enabled<4>Processor #50 INVALID - (Max ID: 16). > > Is there any known solution to re-enable the CPU 1, CPU 2 and CPU 3 ? > > Is this an IBM bug ? Did you compile your kernel with the following option? IBM x440 Summit/EXA support CONFIG_X86_SUMMIT