[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] [FIX] X86 CPU topology broken in KVM mode

From: Jan Kiszka
Subject: Re: [Qemu-devel] [FIX] X86 CPU topology broken in KVM mode
Date: Wed, 07 Sep 2011 10:33:30 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv: Gecko/20080226 SUSE/ Thunderbird/ Mnenhy/

On 2011-09-07 10:19, Bharata B Rao wrote:
> On Wed, Sep 7, 2011 at 1:37 PM, Jan Kiszka <address@hidden> wrote:
>> On 2011-09-07 06:21, Bharata B Rao wrote:
>>> - I am not sure what is the problem with i486 as I haven't been able
>>> to boot an i486 VM successfully, hence haven't attempted to fix this.
>> -smp 2 -cpu i486 boots fine here (granted, I don't have some i486 SMP
>> kernel at hand).
> I am getting "Unable to find x86 CPU definition" error with -cpu i486.
> Need to investigate more.

Err, sorry: -cpu 486

>>> +
>>> +    if (env->cpuid_features & CPUID_APIC) {
>> || smp_cpus > 1
>> Should be obvious when looking at the hunk you took this from.
> Yes, but I thought no harm in initializing it for uni processor case too, no ?

486 CPUs do not have the CPUID_APIC feature set as they do not include a
local APIC. But those SMP systems have external APICs.


Siemens AG, Corporate Technology, CT T DE IT 1
Corporate Competence Center Embedded Linux

reply via email to

[Prev in Thread] Current Thread [Next in Thread]