How To Use Xen Virtualization ; Chips For Virtualization

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I just installed Fedora 7 on my AMD Athlon 64 X2 4800+ X86_64 machine. I'm planning to attempt installing a guest OS tonight -- probably CentOS5.
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Question 1

Currently, I just boot F7 with the xen kernel, running Domain-0 and I go my merry way logging in as myself and installing software, doing email, etc. But I wonder if this is accepted practice? Or should I be installing F7 again a second time as a guest OS and doing user and development stuff under that?
Here is where I am now virtualization wise:

[root@bobcp4 ~]# xm list
Name ID Mem VCPUs State Time(s)
Domain-0                                   0  1880     2     r-----    503.8

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Question 2

My AMD Athlon 64 chip listed above doesn't support full virtualization e.g. there is no 'svn' in the /proc/cpuinfo flags. I have this chip installed in an Asrock 939SLI32-eSATA2 motherboard. Can anyone suggest a new processor I can buy which supports full virtualization? I'd prefer an AMD processor and I could replace the motherboard. The Asrock board is rock solid -- I love it -- but I could replace it.

[root@bobcp4 ~]# cat /proc/cpuinfo
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 35
model name      : AMD Athlon(tm) 64 X2 Dual Core Processor 4800+
stepping        : 2
cpu MHz         : 2410.848
cache size      : 1024 KB
physical id     : 0
siblings        : 1
core id         : 0
cpu cores       : 1
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags : fpu tsc msr pae mce cx8 apic mtrr mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm cmp_legacy
bogomips        : 6028.73
TLB size        : 1024 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp

processor       : 1
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 35
model name      : AMD Athlon(tm) 64 X2 Dual Core Processor 4800+
stepping        : 2
cpu MHz         : 2410.848
cache size      : 1024 KB
physical id     : 1
siblings        : 1
core id         : 0
cpu cores       : 1
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags : fpu tsc msr pae mce cx8 apic mtrr mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm cmp_legacy
bogomips        : 6028.73
TLB size        : 1024 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp


Thanks

Bob Cochran


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