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gcc + kvm + 64 bit ? confused :-/

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From: Benjamin Budts <benjamin.budts@...>
To: <kvm-devel@...>
Cc: Andi Kleen <andi@...>, <linux-kernel@...>
Subject: gcc + kvm + 64 bit ? confused :-/
Date: Wednesday, July 11, 2007 - 5:43 am

Hi all,

question...

I'm a bit confused using the -march=xxx options for gcc when using a 
kernel virtual machine...
Getting errors on smp when using the -march=nocoma for gcc... possibly 
because smp is not fully supported yet I suppse.

I guess my question is, when installing kvm, is the virtual machine 64 
bit capable or should I install 32 bit OS ?

I installed an amd64 debian image and it seems to be running 
fine...except for the problem mentioned above.

And what type of architecture do i have to mention with gcc in a kvm ? 
march ... arch...

thx !

karnak:/usr/local/src/sendmail-8.14.1# cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 2
model name      : QEMU Virtual CPU version 0.9.0
stepping        : 3
cpu MHz         : 1994.974
cache size      : 128 KB
fpu             : yes
fpu_exception   : yes
cpuid level     : 2
wp              : yes
flags           : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca 
cmov pat pse36 clflush mmx fxsr sse sse2 syscall lm up pni
bogomips        : 3929.02
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management:

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Messages in current thread:
[PATCH 00/20] KVM updates for 2.6.23, part 2, Avi Kivity, (Sun Jul 8, 7:54 am)
[PATCH 16/20] HOTPLUG: Adapt thermal throttle to CPU_DYING, Avi Kivity, (Sun Jul 8, 7:54 am)
[PATCH 13/20] KVM: Clean up #includes, Avi Kivity, (Sun Jul 8, 7:54 am)
[PATCH 20/20] KVM: Use CPU_DYING for disabling virtualization, Avi Kivity, (Sun Jul 8, 7:54 am)
[PATCH 19/20] KVM: Tune hotplug/suspend IPIs, Avi Kivity, (Sun Jul 8, 7:54 am)
[PATCH 17/20] SMP: Implement on_cpu(), Avi Kivity, (Sun Jul 8, 7:54 am)
Re: [PATCH 17/20] SMP: Implement on_cpu(), Andi Kleen, (Sun Jul 8, 3:06 pm)
Re: [PATCH 17/20] SMP: Implement on_cpu(), Avi Kivity, (Mon Jul 9, 2:46 am)
Re: [PATCH 17/20] SMP: Implement on_cpu(), Andi Kleen, (Mon Jul 9, 3:16 am)
Re: [PATCH 17/20] SMP: Implement on_cpu(), Avi Kivity, (Mon Jul 9, 5:40 am)
Re: [PATCH 17/20] SMP: Implement on_cpu(), Avi Kivity, (Mon Jul 9, 7:28 am)
Re: [PATCH 17/20] SMP: Implement on_cpu(), Satyam Sharma, (Mon Jul 9, 3:24 pm)
Re: [PATCH 17/20] SMP: Implement on_cpu(), Avi Kivity, (Tue Jul 10, 2:03 am)
Re: [PATCH 17/20] SMP: Implement on_cpu(), Satyam Sharma, (Tue Jul 10, 5:22 am)
Re: [PATCH 17/20] SMP: Implement on_cpu(), Avi Kivity, (Tue Jul 10, 7:03 am)
Re: [PATCH 17/20] SMP: Implement on_cpu(), Satyam Sharma, (Tue Jul 10, 8:07 pm)
Re: [PATCH 17/20] SMP: Implement on_cpu(), Avi Kivity, (Wed Jul 11, 3:26 am)
gcc + kvm + 64 bit ? confused :-/, Benjamin Budts, (Wed Jul 11, 5:43 am)
Re: gcc + kvm + 64 bit ? confused :-/, Andi Kleen, (Wed Jul 11, 6:54 am)
Re: [PATCH 17/20] SMP: Implement on_cpu(), Satyam Sharma, (Wed Jul 11, 3:47 am)
[PATCH 09/20] KVM: MMU: Fix Wrong tlb flush order, Avi Kivity, (Sun Jul 8, 7:54 am)
Re: [PATCH 09/20] KVM: MMU: Fix Wrong tlb flush order, Ingo Molnar, (Sun Jul 8, 8:21 am)
Re: [PATCH 09/20] KVM: MMU: Fix Wrong tlb flush order, Avi Kivity, (Sun Jul 8, 8:42 am)
[PATCH 18/20] KVM: Keep track of which cpus have virtualizat..., Avi Kivity, (Sun Jul 8, 7:54 am)
[PATCH 12/20] KVM: Remove kvmfs in favor of the anonymous in..., Avi Kivity, (Sun Jul 8, 7:54 am)
[PATCH 10/20] KVM: VMX: Remove unnecessary code in vmx_tlb_f..., Avi Kivity, (Sun Jul 8, 7:54 am)
[PATCH 05/20] KVM: Add support for in-kernel pio handlers, Avi Kivity, (Sun Jul 8, 7:54 am)
[PATCH 14/20] HOTPLUG: Add CPU_DYING notifier, Avi Kivity, (Sun Jul 8, 7:54 am)
[PATCH 15/20] HOTPLUG: Adapt cpuset hotplug callback to CPU_..., Avi Kivity, (Sun Jul 8, 7:54 am)
[PATCH 11/20] KVM: SVM: Reliably detect if SVM was disabled ..., Avi Kivity, (Sun Jul 8, 7:54 am)
Re: [PATCH 11/20] KVM: SVM: Reliably detect if SVM was disab..., Roland Dreier, (Sun Jul 8, 9:43 am)
Re: [PATCH 11/20] KVM: SVM: Reliably detect if SVM was disab..., Avi Kivity, (Sun Jul 8, 9:45 am)
[PATCH 06/20] KVM: Fix x86 emulator writeback, Avi Kivity, (Sun Jul 8, 7:54 am)
[PATCH 08/20] KVM: VMX: Reinitialize the real-mode tss when ..., Avi Kivity, (Sun Jul 8, 7:54 am)
[PATCH 07/20] KVM: Avoid useless memory write when possible, Avi Kivity, (Sun Jul 8, 7:54 am)
[PATCH 03/20] KVM: Adds support for in-kernel mmio handlers, Avi Kivity, (Sun Jul 8, 7:54 am)
[PATCH 02/20] KVM: Implement emulation of instruction "ret" ..., Avi Kivity, (Sun Jul 8, 7:54 am)
[PATCH 01/20] KVM: Implement emulation of "pop reg" instruct..., Avi Kivity, (Sun Jul 8, 7:54 am)
[PATCH 04/20] KVM: VMX: Fix interrupt checking on lightweigh..., Avi Kivity, (Sun Jul 8, 7:54 am)