Hi Alex,
I am trying to pass through a PCI device to the guest to compare the
MSI interrupt latency with normal device pass through and pass through using
VFIO framework. I used the following script
for dev in $(ls /sys/bus/pci/devices/:06:00.0/iommu_group/devices); do
vendor=$(cat /sys
On Wed, 2012-11-28 at 16:32 +, Krishna J wrote:
Hi Alex,
I am trying to pass through a PCI device to the guest to compare the
MSI interrupt latency with normal device pass through and pass through
using VFIO framework. I used the following script
for dev in $(ls /sys/bus/pci/devices
I still poke at this when I get time.
I notice that pci_update_mappings calls pci_bar_address, and the latter
will always return PCI_BAR_UNMAPPED for this device. For the emulated
devices, pci_bar_address will get an address with PCI_ROM_ADDRESS_ENABLE
at some point, and pci_map_option_rom
On 01/07/2012 02:21 PM, Gordon Messmer wrote:
I'm certain that qemu-kvm loads both
/usr/share/qemu-kvm/vgabios-cirrus.bin and
/var/lib/libvirt/images/Radeon3470.rom, which seems correct. However,
in the guest, both the virtual VGA card and the real PCI one have the
same ROM, from
On 01/06/2012 06:07 PM, Gordon Messmer wrote:
/usr/libexec/qemu-kvm\
-vnc 127.0.0.1:0 -vga cirrus \
-device
pci-assign,host=05:00.0,id=hostdev1,configfd=27,bus=pci.0,addr=0x7,romfile=/var/lib/libvirt/images/Radeon3470.rom
Snipped a bunch of other args... I'm certain that qemu-kvm loads both
On 06.01.2012 08:25, Gordon Messmer wrote:
On 01/05/2012 11:07 AM, Gordon Messmer wrote:
I started with an update to seabios, from the bundled version
0.6.1.2-8.el6 to a rebuilt package from F16, 0.6.2-3.el6. That's enough
to get the guest to boot with the pass-through video card. It doesn't
On 01/06/2012 01:31 AM, André Weidemann wrote:
On 06.01.2012 08:25, Gordon Messmer wrote:
Well, I finally figured out that I have to enable the reading of roms
from the device by writing 1 to the rom node in /sys/. Now the
problem is that the rom is 64k, and only 32k are making it into the
On 01/03/2012 07:44 PM, Alex Williamson wrote:
Yep, that's what I would have guessed, there's a 256MB resource. I'm
not sure if the seabios you're using is mapping the MMIO hole
efficiently enough to handle that. Can you test on new upstream
qemu-kvm? Thanks,
I'm not done poking the system,
On 01/05/2012 11:07 AM, Gordon Messmer wrote:
I started with an update to seabios, from the bundled version
0.6.1.2-8.el6 to a rebuilt package from F16, 0.6.2-3.el6. That's enough
to get the guest to boot with the pass-through video card. It doesn't
work, currently, and I'm pretty sure that's
On Mon, 2012-01-02 at 11:41 -0800, Gordon Messmer wrote:
I'm going to summarize my questions first and write the long explanation
afterward...
1: What happens when Linux rejects the aperture allocated by the BIOS
for an AMD IOMMU?
This is actually the GART aperture, which Linux will try
Thanks, Alex. I really appreciate the reply.
On 01/03/2012 01:34 PM, Alex Williamson wrote:
This is actually the GART aperture, which Linux will try to use as an
IOMMU. You can pretty much ignore this, but it may be wasting memory
for no good reason if it's really hiding usable memory and
On Tue, 2012-01-03 at 16:29 -0800, Gordon Messmer wrote:
Thanks, Alex. I really appreciate the reply.
On 01/03/2012 01:34 PM, Alex Williamson wrote:
This is actually the GART aperture, which Linux will try to use as an
IOMMU. You can pretty much ignore this, but it may be wasting memory
I'm going to summarize my questions first and write the long explanation
afterward...
1: What happens when Linux rejects the aperture allocated by the BIOS
for an AMD IOMMU?
2: What is unsafe about the allow_unsafe_assigned_interrupts option?
What are the potential consequences of its use?
Hi,
Thank you for the responses.
I've managed to get further in the process while running KVM with
Fedora rather than Ubuntu.
I've gotten Windows 7 to recognize the graphics card but mark it with
an error about hardware resources (I assume memory/interrupts).
I've found the same error was
* Brian Jackson (i...@theiggy.com) wrote:
On Saturday 23 January 2010 05:20:49 Yigal Korman wrote:
I'm trying to pass a second video card to a Windows 7 virtual machine
with KVM, and I get the following error:
KVM doesn't support assigning graphics cards to VMs yet. There are people
2010/1/26 Chris Wright chr...@sous-sol.org:
Again, VT (or VT-x) isn't the same as VT-d. So to be sure, you can
grep dmesg for DMAR and IOMMU to verify that the chipset actually has
VT-d support, that it's enabled, and that it's not broken (there are
quite a few broken BIOS out there that
2010/1/26 Kenni Lund ke...@kelu.dk:
2010/1/26 Chris Wright chr...@sous-sol.org:
Again, VT (or VT-x) isn't the same as VT-d. So to be sure, you can
grep dmesg for DMAR and IOMMU to verify that the chipset actually has
VT-d support, that it's enabled, and that it's not broken (there are
quite
* Kenni Lund (ke...@kelu.dk) wrote:
2010/1/26 Kenni Lund ke...@kelu.dk:
2010/1/26 Chris Wright chr...@sous-sol.org:
Again, VT (or VT-x) isn't the same as VT-d. So to be sure, you can
grep dmesg for DMAR and IOMMU to verify that the chipset actually has
VT-d support, that it's enabled,
On 01/26/2010 03:11 AM, Kenni Lund wrote:
Can someone with write permissions to the wiki please add this?
Everyone has write permissions, you just need an account.
--
Do not meddle in the internals of kernels, for they are subtle and quick to
panic.
--
To unsubscribe from this list:
On Saturday 23 January 2010 05:20:49 Yigal Korman wrote:
Hi,
I'm trying to pass a second video card to a Windows 7 virtual machine
with KVM, and I get the following error:
KVM doesn't support assigning graphics cards to VMs yet. There are people
working on it afaik, but I don't know the
Hi ,
My goal is to assign pci device using Vt-d capability. I have a
Supermicro Server X8DTU-F motherboard. I verified that it had Vt-d
capability and enabled it in BIOS. Iam using KVM-86 (as I had some
compilation error in KVM-87).
My first try was to use Ubuntu 9.04 (with kvm
Hi All,
I apologize for the typo in my earlier mail. My first try
failed and I was NOT able to get an IP address.
Please clarify if there is any issue in my setup.
Thanks,
Vinoth.
On Fri, Jul 10, 2009 at 5:47 PM, VinothKumar Svinot...@gmail.com wrote:
Hi ,
My goal is
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