[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [BUG] Only 1 VCPU is detected in Xen 4.1 - "A valid RSDP was not found"
Hi Andrew, Thank you for your prompt reply. >Can you post all of xm dmesg rather than just a snippet? The full xm dmesg and dmesg logs are enclosed in this message. >Is this a legacy boot or an EFI boot? It is an EFI boot, because EFI + GPT is needed to manage the disk storage > 2TB. I tried Xen 4.4 with kernel 3.13 in Ubuntu 14.04 (and Xen 4.1 with kernel 3.11 in Ubuntu 12.04), but the USB keyboard / mouse failed to work in both cases. Thus, I fall back to Debian Wheezy Xen 4.1. Thanks a lot. John Mok On Tue, Jul 22, 2014 at 3:50 PM, Andrew Cooper <andrew.cooper3@xxxxxxxxxx> wrote: > On 22/07/2014 05:54, John Mok wrote: >> Hi, >> >> 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 === > > Xen only has a single CPU because it can't find the ACPI tables, and the > MP table lists no secondary processors. By default, dom0 has the same > number of vcpus as Xen has pcpus. > > Can you post all of xm dmesg rather than just a snippet? > > Is this a legacy boot or an EFI boot? > > Are you able to try a more up-to-date version of Xen? 4.1 is quite old now. > > ~Andrew Attachment:
dom0.log Attachment:
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