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[Qemu-devel] [Bug 621950] Re: qemu not able to run 64 bit OS when -enabl
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From: |
bhasker |
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Subject: |
[Qemu-devel] [Bug 621950] Re: qemu not able to run 64 bit OS when -enable-kvm is used with a 64 bit processor |
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Date: |
Mon, 23 Aug 2010 15:18:12 -0000 |
I tried this
kernel
uname: 2.6.32-5-amd64 #1 SMP Sat Jul 24 01:47:24 UTC 2010 x86_64
with version 0.12.5
when tried to use -enable-kvm the system starts out in the 32 bit mode rather
than 64 bit.
kvm version:
------------------
filename: /lib/modules/2.6.32-5-amd64/kernel/arch/x86/kvm/kvm-intel.ko
license: GPL
author: Qumranet
depends:
kvm
vermagic: 2.6.32-5-amd64 SMP mod_unload modversions
parm: bypass_guest_pf:bool
parm: vpid:bool
parm: flexpriority:bool
parm: ept:bool
parm: unrestricted_guest:bool
parm: emulate_invalid_guest_state:bool
this problem is still present.
Even if I use qemu-system-x86_64 I am able to run the 64 bit OS only if
-enable-kvm is avoided but
the system is very slow.
** Changed in: qemu
Status: Invalid => New
--
qemu not able to run 64 bit OS when -enable-kvm is used with a 64 bit processor
https://bugs.launchpad.net/bugs/621950
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
Status in QEMU: New
Bug description:
Hi,
The host processor is a 64 bit processor (as below)
When I run the emulated mode of 64 bit (full emulation) I can run the 64 bit
OS fine. when I start using -enable-kvm, I get error message that
"Your CPU does not support long mode. Use a 32bit distribution."
trying to install SuSe linux enterprise server 64 bit
Information
------------------------------------------------------------------------------------------------------------------------------
------------------------------------------
processor cat /proc/cpuinfo
processor : 3
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Core(TM)2 Quad CPU @ 2.66GHz
stepping : 7
cpu MHz : 2671.246
cache size : 4096 KB
physical id : 0
siblings : 4
core id : 3
cpu cores : 4
apicid : 3
initial apicid : 3
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe lm constant_tsc
arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3
cx16 xtpr pdcm lahf_lm tpr_shadow
bogomips : 5342.46
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
------------------------------------------
command line used
qemu-system-x86_64 -enable-kvm -cdrom /img/cd.iso
why is kvm not able to use 64 bit capability in a host which is a 64 bit
processor ?
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