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[Xen-devel] [BUG] Only 1 VCPU is detected in Xen 4.1 - "A valid RSDP was not found"

  • To: xen-devel@xxxxxxxxxxxxx
  • From: John Mok <a9121431@xxxxxxxxx>
  • Date: Tue, 22 Jul 2014 12:54:39 +0800
  • Delivery-date: Tue, 22 Jul 2014 05:52:40 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xen.org>


I tried to install Xen 4.1 using new Intel Atom C2758, which has 8
cores and VT-x feature. However, only 1 CPU was available in Dom0 and
SMP disabled.

When booted to normal kernel 3.2 without Xen, all 8 cores were available.

Thanks a lot.

John Mok

(the acpi dump is also attached)

=== 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 ===

Attachment: acpidump.txt
Description: Text document

Attachment: dom0.log
Description: Binary data

Attachment: hypervisor.log
Description: Binary data

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