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From: bhasker <621950@bugs.launchpad.net>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] [Bug 621950] [NEW] qemu not able to run 64 bit OS when -enable-kvm is used with a 64 bit processor
Date: Sat, 21 Aug 2010 20:12:28 -0000	[thread overview]
Message-ID: <20100821201228.18971.51662.malonedeb@potassium.ubuntu.com> (raw)
In-Reply-To: 20100821201228.18971.51662.malonedeb@potassium.ubuntu.com

Public bug reported:

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 ?

** Affects: qemu
     Importance: Undecided
         Status: 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 ?

       reply	other threads:[~2010-08-21 20:20 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-08-21 20:12 bhasker [this message]
2010-08-21 20:58 ` [Qemu-devel] [Bug 621950] Re: qemu not able to run 64 bit OS when -enable-kvm is used with a 64 bit processor Anthony Liguori
2010-08-23 15:18 ` bhasker
2010-08-23 17:46 ` Anthony Liguori
2010-08-23 18:22 ` agraf
2010-08-24 13:20 ` bhasker

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