Vista/rtl8139 broken?
Hi,
I've been using ne2k with BSD/Linux/WindowsXP just fine with KVM-35/2.6.23-rc2, but when I try to run Vista, which doesn't support the ne2k any more, I tried switching to the rtl8139 emulation.
I observed that the rtl8139 emulation works fine in WindowsXP, so it's not broken. But it does not seem to work in Vista (x86). The host is AMD64/SVM. The way that it doesn't work is that no packets are sent/received over the interface, so the device does not route.
The only difference between XP and Vista's KVM startup is that for Vista I enable ACPI (necessary to install).
WindowsXP -->
kvm -no-reboot -localtime -no-acpi -m 256 -hda $IMAGE \
-net nic,model=rtl8139 -net tap,script=/etc/kvm/kvm-ifup $*Vista -->
kvm -no-reboot -localtime -m 512 -hda $IMAGE \
-net nic,model=rtl8139 -net tap,script=/etc/kvm/kvm-ifup $*The problem seems to be similar to a QEMU endian bug from some time ago, but I don't think that's the problem here. It looks like it's some sort of incompatibility between Vista and the rtl8139 emulation.
Any ideas? Does ACPI have anything to do with it?
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Quoted 19 lines · Alistair John Strachan
Hi,
I've been using ne2k with BSD/Linux/WindowsXP just fine with KVM-35/2.6.23-rc2, but when I try to run Vista, which doesn't support the ne2k any more, I tried switching to the rtl8139 emulation.
I observed that the rtl8139 emulation works fine in WindowsXP, so it's not broken. But it does not seem to work in Vista (x86). The host is AMD64/SVM. The way that it doesn't work is that no packets are sent/received over the interface, so the device does not route.
The only difference between XP and Vista's KVM startup is that for Vista I enable ACPI (necessary to install).
WindowsXP -->
kvm -no-reboot -localtime -no-acpi -m 256 -hda $IMAGE \ -net nic,model=rtl8139 -net tap,script=/etc/kvm/kvm-ifup $*Vista -->
Quoted 8 lines
kvm -no-reboot -localtime -m 512 -hda $IMAGE \ -net nic,model=rtl8139 -net tap,script=/etc/kvm/kvm-ifup $*The problem seems to be similar to a QEMU endian bug from some time ago, but I don't think that's the problem here. It looks like it's some sort of incompatibility between Vista and the rtl8139 emulation.
Any ideas? Does ACPI have anything to do with it?
http://kvm.qumranet.com/kvmwiki/Vista_Networking_Workaround
Basically, the rtl8139 emulation and the driver shipped with Vista don't get along very well. The workaround suggests using ne2k_pci and the Windows 2000 driver. There's a link to download the driver in the wiki page, if it doesn't work you can try:
http://cablemodem.fibertel.com.ar/tamsyn/drivercd.iso
I've personally used that driver successfully.
Cheers,
Jorge
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Quoted 18 lines · Alistair John Strachan
Hi,
I've been using ne2k with BSD/Linux/WindowsXP just fine with KVM-35/2.6.23-rc2, but when I try to run Vista, which doesn't support the ne2k any more, I tried switching to the rtl8139 emulation.
I observed that the rtl8139 emulation works fine in WindowsXP, so it's not broken. But it does not seem to work in Vista (x86). The host is AMD64/SVM. The way that it doesn't work is that no packets are sent/received over the interface, so the device does not route.
The only difference between XP and Vista's KVM startup is that for Vista I enable ACPI (necessary to install).
WindowsXP -->
kvm -no-reboot -localtime -no-acpi -m 256 -hda $IMAGE \ -net nic,model=rtl8139 -net tap,script=/etc/kvm/kvm-ifup $*
Quoted 7 lines
Vista -->
kvm -no-reboot -localtime -m 512 -hda $IMAGE \ -net nic,model=rtl8139 -net tap,script=/etc/kvm/kvm-ifup $*The problem seems to be similar to a QEMU endian bug from some time ago, but I don't think that's the problem here. It looks like it's some sort of incompatibility between Vista and the rtl8139 emulation.
The rtl8139 driver was fixed in upstream QEMU a week or two back - it was calculating checksums incorrectly which Vista didn't like. The patch needs to be applied to KVM too...
Dan.
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