Re: [PATCH -v2 RESENDING] x86, acpi: Handle xapic/x2apic entries in MADT at same time

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On 05/05/2011 09:21 AM, Jack Steiner wrote:
> FYI
> 
> We also hit the same problem. Our BIOS folks tried to make the BIOS
> ACPI compliant but we hit the same problem & broke cpu numbering.
> 
> For now, we've reverted the BIOS change but are concerned that another OS
> may require the change.
> 
> 
>>From the boot log:
>      891.184006 (    0.001022)| [    0.000000] Setting APIC routing to UV large system.
>      891.197920 (    0.013914)| [    0.000000] ACPI: X2APIC (apic_id[0x100] uid[0x20] enabled)
>      891.218507 (    0.020587)| [    0.000000] ACPI: X2APIC (apic_id[0x102] uid[0x21] enabled)
>     ...
>      904.009046 (    0.006237)| [    0.000000] ACPI: X2APIC (apic_id[0x3ff0] uid[0x7fe] enabled)
>      904.020501 (    0.011455)| [    0.000000] ACPI: X2APIC (apic_id[0x3ff2] uid[0x7ff] enabled)
>      904.024500 (    0.003999)| [    0.000000] ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
>      904.024684 (    0.000184)| [    0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x02] enabled)
> 
>     ...
> 
>     1089.050351 (    0.008981)| [   30.960025] Booting Node   4, Processors  #1  #2 #3 #4 #5 #6 #7 #8 Ok.
>     1089.847951 (    0.669131)| [   31.473073] Booting Node   5, Processors  #9 #10 #11 #12 #13 #14 #15 #16 Ok.
>     ....
>     1283.195893 (    0.772824)| [  224.864248] Booting Node 255, Processors  #2009 #2010 #2011 #2012 #2013 #2014 #2015 #2016 Ok.
>     1283.970697 (    0.774804)| [  225.637077] Booting Node   0, Processors  #2017 #2018 #2019 #2020 #2021 #2022 #2023 Ok.
>     1284.652065 (    0.681368)| [  226.316121] Booting Node   1, Processors  #2024 #2025 #2026 #2027 #2028 #2029 #2030 #2031 Ok.
>     1285.422635 (    0.770570)| [  227.088808] Booting Node   2, Processors  #2032 #2033 #2034 #2035 #2036 #2037 #2038 #2039 Ok.
>     1286.205456 (    0.782821)| [  227.864175] Booting Node   3, Processors  #2040 #2041 #2042 #2043 #2044 #2045 #2046 #2047 Ok.
> 

Yes, your new BIOS need this patch to make cpu number not out of order.

Thanks

Yinghai
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