Re: [Xen-devel] xen can only detect one core of multiple cores cpu

["quizy_jones@xxxxxxxxxxx" <quizy_jones@xxxxxxxxxxx>]

Yes, that's right. I create a EFI configuration manually and directly boot the EFI. This time the cpu cores can be detected. But the mouse and keyboard doesn't work anymore. Some posts say that acpi should be set as http://xenbits.xenproject.org/docs/unstable/misc/xen-command-line.html suggests. I've tried all the four options for acpi, including force | ht | noirq | . Still the keyboard and mouse won't work. What's more, when I create a hvm, the 'xl dmesg' records that " No RAM in high memory; setting high_mem resource base to 100000000".

It seems that ACPI would affect all the hardware devices, including cpu, memory and io.  I've already set the bootloader to UEFI directly without grub. What else can I do?

 

---

jones

 

From: Jan Beulich

Date: 2015-11-30 18:25

To: Andrew Cooper; quizyjones

CC: xen-devel@xxxxxxxxxxxxx

Subject: Re: [Xen-devel] xen can only detect one core of multiple cores cpu

>>> On 28.11.15 at 20:24, <andrew.cooper3@xxxxxxxxxx> wrote:

> On 28/11/15 17:23, quizyjones wrote:

>> I'm using a  Intel E5-2603 v3 @ 1.60GHz CPU of 6 cores. However, the

>> dom0 can only find one core. here are some information that may helps

>> in analyzing.

>

> From `xl dmesg`

>

> (XEN) ACPI Error (tbxfroot-0218): A valid RSDP was not found [20070126]

> ...

> (XEN) SMP motherboard not detected.

>

> Xen cannot find any ACPI tables, and finds no secondary CPUs.  As a

> knock-on effect, dom0 only gets one.

>

> How is your BIOS configured?  Does booting Linux natively work?

 

Presumably this is set to UEFI mode, in which case booting via grub2

requires chainload to be used, or grub2 to be avoided.

 

Jan

 

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