KVM Bug with Windows 2000

DISCUSSION Daniel Hecken 2 participants 4 messages Mar 15, 2007 – Mar 20, 2007 2 messages not in the archive KVM

Share & tools

Daniel Hecken

author

2007-03-15 18:03 UTC #0 lore raw

Hello!

I have installed Windows 2000 on KVM SVN snapshot 4539 and the module from the git master branch. My Computer has an Intel Core 2 Duo and runs an x86 distribution (Ubuntu Feisty with Kernel 2.6.20).

After the installation without kvm I tried to start the image with kvm and get the exception in the appendix.

I start kvm with "-localtime -usb -usbdevice tablet -k de -net nic,model=rtl8139 -net user -monitor tcp::10023,server,nowait -m 384" and a raw image.

Daniel

-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV

_______________________________________________
kvm-devel mailing list [email protected]
https://lists.sourceforge.net/lists/listinfo/kvm-devel

A message that is not in the archive (sent off-list or not yet received): 45F98A78.7040309-LcvzS2Pvy/[email protected]

Avi Kivity

2007-03-18 05:17 UTC #2 lore raw

Quoted 6 lines · Daniel Hecken

Hello!
I have installed Windows 2000 on KVM SVN snapshot 4539 and the module from the git master branch. My Computer has an Intel Core 2 Duo and runs an x86 distribution (Ubuntu Feisty with Kernel 2.6.20).

Quoted 7 lines

After the installation without kvm I tried to start the image with kvm and get the exception in the appendix.
I start kvm with "-localtime -usb -usbdevice tablet -k de -net nic,model=rtl8139 -net user -monitor tcp::10023,server,nowait -m 384" and a raw image.

I've seen that too. It dates from the qemu 0.9.0 merge; back then I hacked the bios to avoid it, and I guess it wasn't fixed by the recent changes, merely made less reproducible.

I'll try to track it down.

Signature · 8 lines

Do not meddle in the internals of kernels, for they are subtle and quick to panic.


-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys-and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV

Avi Kivity

2007-03-19 11:20 UTC #3 lore raw

In reply to a message not in the archive

Quoted 10 lines · Daniel Hecken

Hello!
I have installed Windows 2000 on KVM SVN snapshot 4539 and the module from the git master branch. My Computer has an Intel Core 2 Duo and runs an x86 distribution (Ubuntu Feisty with Kernel 2.6.20).
After the installation without kvm I tried to start the image with kvm and get the exception in the appendix.

Let me know if the attached patch fixes this.

Signature · 1 line

error compiling committee.c: too many arguments to function

drivers/kvm/vmx.c +1 -1

index 55139e0..a721b60 100644
@@ -618,7 +618,7 @@ static void fix_pmode_dataseg(int seg, struct kvm_save_segment *save)
 {
 	struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
 
-	if (vmcs_readl(sf->base) == save->base) {
+	if (vmcs_readl(sf->base) == save->base && (save->base & AR_S_MASK)) {
 		vmcs_write16(sf->selector, save->selector);
 		vmcs_writel(sf->base, save->base);
 		vmcs_write32(sf->limit, save->limit);

_______________________________________________
kvm-devel mailing list [email protected]
https://lists.sourceforge.net/lists/listinfo/kvm-devel

A message that is not in the archive (sent off-list or not yet received): 45FE720A.6070502-atKUWr5tajBWk0Htik3J/[email protected]

Daniel Hecken

author

2007-03-20 20:13 UTC #5 lore raw

Hello Avi,

it works with this patch. I got an Windows 2000 with an ACPI HAL which can boot now.

Thanks

Daniel

PS. Have you applied this patch to KVM 17?

Quoted 22 lines · Avi Kivity

Quoted 10 lines · Daniel Hecken
Hello!
I have installed Windows 2000 on KVM SVN snapshot 4539 and the module from the git master branch. My Computer has an Intel Core 2 Duo and runs an x86 distribution (Ubuntu Feisty with Kernel 2.6.20).
After the installation without kvm I tried to start the image with kvm and get the exception in the appendix.
Let me know if the attached patch fixes this.
------------------------------------------------------------------------
drivers/kvm/vmx.c +0 -0
index 55139e0..a721b60 100644

drivers/kvm/vmx.c static void fix_pmode_dataseg(int seg, struct kvm_save_segment *save) · line 624

Quoted 8 lines

drivers/kvm/vmx.c +1 -1

@@ -618,7 +618,7 @@ static void fix_pmode_dataseg(int seg, struct kvm_save_segment *save)
 {
 	struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
 
-	if (vmcs_readl(sf->base) == save->base) {
+	if (vmcs_readl(sf->base) == save->base && (save->base & AR_S_MASK)) {
 		vmcs_write16(sf->selector, save->selector);
 		vmcs_writel(sf->base, save->base);
 		vmcs_write32(sf->limit, save->limit);