Re: [Xen-devel] vlapic warning messages - Keir Fraser - com.xensource.lists.xen-devel

2 messages in com.xensource.lists.xen-develRe: [Xen-devel] vlapic warning messages

From	Sent On	Attachments
Ky Srinivasan	13 Mar 2007 14:56
Keir Fraser	14 Mar 2007 04:23

Subject:	Re: [Xen-devel] vlapic warning messages
From:	Keir Fraser (ke...@xensource.com)
Date:	03/14/2007 04:23:45 AM
List:	com.xensource.lists.xen-devel

On 13/3/07 21:56, "Ky Srinivasan" <ksri...@novell.com> wrote:

While running unmodified guests I sometime get the following warning message from vlapic:

vlapic.c:217:d0 Bad DFR value for lapic of vcpu 0

Any ideas on what the problem might be.

Can you extend that line of tracing to print the bad value (vlapic_get_reg(vlapic, APIC_DFR))?

I'd say it's most likely that the guest is writing zeroes into reserved-1 bits of the DFR, and we should be ignoring the modification of those bits.

-- Keir