Problem with Ubuntu Edgy and AMD X2

DISCUSSION Franco Spinelli 3 participants 4 messages Dec 12, 2006 – Dec 13, 2006 2 messages not in the archive KVM

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Franco Spinelli

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2006-12-12 22:00 UTC #0 lore raw

I am testing kvm on my new PC
MB is Asus M2NPV-VM with AMD CPU X2.
Installed OS is Ubuntu Edgy

I get kvm tarball and compiled it.

After installing gcc 3.4 I begin compile step

On Ubuntu Edgy there is no uuid/uuid.h file so I have grab it from tar file at Ubuntu repository and put it in qemu subdir of kvm

On Ubuntu Edgy libuuid is in /lib/libuuid.so.1 so I make a link from it to /lib/libuuid.so

After this, I got kvm compile and install.
I modprobe new module without any problem, create a disk image and begint to install Windows XP on that.
At formatting step it take a long time (about 25 min for a 6Gb of disk) with 90% of CPU and only very little i/o activity.At about 99%, exit from install with a message "impossible to format".

Using dmesg command I geta lot of this error:

[17192500.496000] kvm: unhandled rdmsr: 0xc0000081

I have also tried a workaround necessary for Xen on my MB. In install procedure of XP I hit F5 key and used "Standard PC" from menu choice, without any change

Booting with -no-acpi flag an image file made by qemu (for first install step) and by Xen (for install completition) boot and work but I am not able to activate network connection. I find a network adapter, I can configure it but I have no response pinging other LAN PC.

Regards

Franco Spinelli

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Avi Kivity

2006-12-13 08:26 UTC #2 lore raw

Quoted 6 lines · Franco Spinelli

I am testing kvm on my new PC
MB is Asus M2NPV-VM with AMD CPU X2.
Installed OS is Ubuntu Edgy
I get kvm tarball and compiled it.

Quoted 8 lines

After installing gcc 3.4 I begin compile step
On Ubuntu Edgy there is no uuid/uuid.h file so I have grab it from tar file at Ubuntu repository and put it in qemu subdir of kvm
On Ubuntu Edgy libuuid is in /lib/libuuid.so.1 so I make a link from it to /lib/libuuid.so

You're probably missing a package. On Fedora Core, e2fsprogs-devel contains both libuuid.so and uuid.h.

Quoted 11 lines

After this, I got kvm compile and install.
I modprobe new module without any problem, create a disk image and begint to install Windows XP on that.
At formatting step it take a long time (about 25 min for a 6Gb of disk) with 90% of CPU and only very little i/o activity.At about 99%, exit from install with a message "impossible to format".
Using dmesg command I geta lot of this error:
[17192500.496000] kvm: unhandled rdmsr: 0xc0000081

What cpu is this? A 32-bit Intel Core?

Quoted 10 lines

I have also tried a workaround necessary for Xen on my MB. In install procedure of XP I hit F5 key and used "Standard PC" from menu choice, without any change
Booting with -no-acpi flag an image file made by qemu (for first install step) and by Xen (for install completition) boot and work but I am not able to activate network connection. I find a network adapter, I can configure it but I have no response pinging other LAN PC.

Unless you use ethernet bridging, ping will not work. TCP from the guest to the outside world should work, but not from outside into the guest (in effect the guest is NATed by qemu).

Signature · 8 lines

error compiling committee.c: too many arguments to function


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Dor Laor

2006-12-13 08:36 UTC #4 lore raw

Quoted 11 lines

Quoted 9 lines · Franco Spinelli
I am testing kvm on my new PC
MB is Asus M2NPV-VM with AMD CPU X2.
Installed OS is Ubuntu Edgy
I get kvm tarball and compiled it.
After installing gcc 3.4 I begin compile step
On Ubuntu Edgy there is no uuid/uuid.h file so I have grab it from

tar

Quoted 3 lines

Quoted 3 lines
file at Ubuntu repository and put it in qemu subdir of kvm
On Ubuntu Edgy libuuid is in /lib/libuuid.so.1 so I make a link from

Quoted 10 lines

Quoted 2 lines
to /lib/libuuid.so
You're probably missing a package. On Fedora Core, e2fsprogs-devel contains both libuuid.so and uuid.h.
Quoted 4 lines
After this, I got kvm compile and install.
I modprobe new module without any problem, create a disk image and begint to install Windows XP on that.
At formatting step it take a long time (about 25 min for a 6Gb of

disk)

Quoted 9 lines

Quoted 7 lines
with 90% of CPU and only very little i/o activity.At about 99%, exit from install with a message "impossible to format".
Using dmesg command I geta lot of this error:
[17192500.496000] kvm: unhandled rdmsr: 0xc0000081
What cpu is this? A 32-bit Intel Core?

If the above is correct it's AMD.
On 32-bit host it shouldn't matter.
On 64 bit we are handling it, so it's important to know the host OS type.

Quoted 3 lines

Quoted 3 lines
I have also tried a workaround necessary for Xen on my MB. In

install

Quoted 1 line

Quoted 1 line
procedure of XP I hit F5 key and used "Standard PC" from menu

choice,

Quoted 4 lines

Quoted 4 lines
without any change
Booting with -no-acpi flag an image file made by qemu (for first

install

Quoted 1 line

Quoted 1 line
step) and by Xen (for install completition) boot and work but I am

not

Quoted 9 lines

Quoted 3 lines
able to activate network connection. I find a network adapter, I can configure it but I have no response pinging other LAN PC.
Unless you use ethernet bridging, ping will not work. TCP from the guest to the outside world should work, but not from outside into the guest (in effect the guest is NATed by qemu).
See also http://compsoc.dur.ac.uk/~djw/qemu.html.

If you want a script that build a software bridge automatically use download the code from 'svn checkout svn://kvm.qumranet.com/kvm/trunk dirname'
Take the dirname/scripts/kvm and put it in /etc/init.d + chkconfig it + service kvm start.
The script add sw0 bridge and switches IP with eth0.

Now you can run qemu with a tap - use arguments Qemu ..... -net nic -net tap,script=dirname/scripts/qemu-ifup

After that you could ping/tcp the guest from outside.

Quoted 6 lines

--
error compiling committee.c: too many arguments to function

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Quoted 2 lines

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your
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V

Quoted 4 lines

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Avi Kivity

2006-12-13 09:32 UTC #5 lore raw

In reply to a message not in the archive

Quoted 4 lines · Franco Spinelli

Using dmesg command I geta lot of this error:
[17192500.496000] kvm: unhandled rdmsr: 0xc0000081

The attached patch should fix it (we didn't handle MSR_STAR on 32-bit AMD hosts)

Signature · 1 line

error compiling committee.c: too many arguments to function

svm.c +3 -3

Index: kernel/svm.c
===================================================================
@@ -402,11 +402,11 @@
 	set_msr_interception(msrpm_va, MSR_GS_BASE, 1, 1);
 	set_msr_interception(msrpm_va, MSR_FS_BASE, 1, 1);
 	set_msr_interception(msrpm_va, MSR_KERNEL_GS_BASE, 1, 1);
-	set_msr_interception(msrpm_va, MSR_STAR, 1, 1);
 	set_msr_interception(msrpm_va, MSR_LSTAR, 1, 1);
 	set_msr_interception(msrpm_va, MSR_CSTAR, 1, 1);
 	set_msr_interception(msrpm_va, MSR_SYSCALL_MASK, 1, 1);
 #endif
+	set_msr_interception(msrpm_va, MSR_K6_STAR, 1, 1);
 	set_msr_interception(msrpm_va, MSR_IA32_SYSENTER_CS, 1, 1);
 	set_msr_interception(msrpm_va, MSR_IA32_SYSENTER_ESP, 1, 1);
 	set_msr_interception(msrpm_va, MSR_IA32_SYSENTER_EIP, 1, 1);

@@ -1098,10 +1098,10 @@
 	case MSR_IA32_APICBASE:
 		*data = vcpu->apic_base;
 		break;
-#ifdef CONFIG_X86_64
-	case MSR_STAR:
+	case MSR_K6_STAR:
 		*data = vcpu->svm->vmcb->save.star;
 		break;
+#ifdef CONFIG_X86_64
 	case MSR_LSTAR:
 		*data = vcpu->svm->vmcb->save.lstar;
 		break;

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