[Xen-users] Only 1 core is recognized in Dom0 - "A valid RSDP was not found"

[John Mok <a9121431@xxxxxxxxx>]

Hi,

I tried to use Xen 4.1.4 on Debian Wheezy running on Intel Atom C2758
hardware. Only 1 VCPU was available in Dom0.

When I booted to normal kernel 3.2.0 without Xen, all 8 cores were available.

I hope someone could point me how to fix the Xen code to make all 8
cores available to Dom0.

Thank you,  John Mok

=== Begin of xm dmesg ===

(XEN) ACPI Error (tbxfroot-0220): A valid RSDP was not found [20070126]
(XEN) System RAM: 32759MB (33545412kB)
(XEN) Domain heap initialised
(XEN) Table is not found!
(XEN) Enabling APIC mode:  Flat.  Using 1 I/O APICs
(XEN) SMP mptable: no processors registered!
(XEN) BIOS bug, MP table errors detected!...
(XEN) ... disabling SMP support. (tell your hw vendor)
(XEN) Found and enabled local APIC!

=== End of xm dmesg ===

=== Begin of dmesg ===

[    0.000000] found SMP MP-table at [ffff8800000fd6c0] fd6c0
[    0.000000] initial memory mapped : 0 - 20000000
[    0.000000] Base memory trampoline at [ffff880000094000] 94000 size 20480
[    0.000000] init_memory_mapping: 0000000000000000-000000007fc00000
[    0.000000]  0000000000 - 007fc00000 page 2M
[    0.000000] kernel direct mapping tables up to 7fc00000 @ 1fffd000-20000000
[    0.000000] init_memory_mapping: 0000000100000000-0000000880000000
[    0.000000]  0100000000 - 0880000000 page 2M
[    0.000000] kernel direct mapping tables up to 880000000 @ 7f644000-7f663000
[    0.000000] RAMDISK: 36b38000 - 37594000
[    0.000000] ACPI: RSDP 000000007f6bd000 00024 (v02 ALASKA)
[    0.000000] ACPI: XSDT 000000007f6bd090 000A4 (v01 ALASKA   A M I
01072009 AMI  00010013)
[    0.000000] ACPI: FACP 000000007f6c04c8 0010C (v05 ALASKA   A M I
01072009 AMI  00010013)
[    0.000000] ACPI Warning: FADT (revision 5) is longer than ACPI 2.0
version, truncating length 268 to 244 (20110623/tbfadt-288)
[    0.000000] ACPI Warning: Invalid length for Pm1aControlBlock: 32,
using default 16 (20110623/tbfadt-610)
[    0.000000] ACPI: DSDT 000000007f6bd1d0 032F3 (v02 ALASKA   A M I
01072009 INTL 20120913)
[    0.000000] ACPI: FACS 000000007f8dc080 00040
[    0.000000] ACPI: FPDT 000000007f6c05d8 00044 (v01 ALASKA   A M I
01072009 AMI  00010013)
[    0.000000] ACPI: SPMI 000000007f6c0620 00040 (v05 A M I   OEMSPMI
00000000 AMI. 00000000)
[    0.000000] ACPI: MCFG 000000007f6c0660 0003C (v01 ALASKA    A M I
01072009 MSFT 00000097)
[    0.000000] ACPI: WDAT 000000007f6c06a0 001AC (v01 ALASKA    A M I
01072009 MSFT 00010013)
[    0.000000] ACPI: UEFI 000000007f6c0850 00042 (v01
00000000      00000000)
[    0.000000] ACPI: APIC 000000007f6c0898 00098 (v03 INTEL  TIANO
00000001 MSFT 00000000)
[    0.000000] ACPI: BDAT 000000007f6c0930 00030 (v01
00000000      00000000)
[    0.000000] ACPI: HPET 000000007f6c0960 00038 (v01 INTEL
00000001 MSFT 01000013)
[    0.000000] ACPI: SSDT 000000007f6c0998 009F1 (v01  PmRef    CpuPm
00003000 INTL 20120913)
[    0.000000] ACPI: BGRT 000000007f6c1390 00038 (v01 ALASKA    A M I
01072009 AMI  00010013)
[    0.000000] ACPI: SPCR 000000007f6c13c8 00050 (v01  A M I  APTIO V
01072009 AMI. 00000005)
[    0.000000] ACPI: HEST 000000007f6c1418 000A8 (v01 INTEL  AVOTON B
00000001 INTL 00000001)
[    0.000000] ACPI: BERT 000000007f6c14c0 00030 (v01 INTEL  AVOTON B
00000001 INTL 00000001)
[    0.000000] ACPI: ERST 000000007f6c14f0 00230 (v01 INTEL  AVOTON B
00000001 INTL 00000001)
[    0.000000] ACPI: EINJ 000000007f6c1720 00150 (v01 INTEL  AVOTON B
00000001 INTL 00000001)
[    0.000000] ACPI: Local APIC address 0xfee00000

=== End of dmesg ===

Attachment: dmesg.txt
Description: Text document

Attachment: xm-dmesg.txt
Description: Text document

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