Hi,
sorry to be late,
I justh ave tested this patch, this is working fine with an nvidia
quadro P2200
(gui improvement is ok too)
Le 12/08/22 à 14:04, Wolfgang Bumiller a écrit :
> applied this one, left out patch 2 after some off-list discussion
>
> On Fri, Aug 12, 2022 at 11:29:49AM +0200, Dominik Csapak wrote:
>> When passing through an NVIDIA vGPU via mediated devices, their
>> software needs the qemu process to have the 'uuid' parameter set to the
>> one of the vGPU. Since it's currently not possible to pass through multiple
>> vGPUs to one VM (seems to be an NVIDIA driver limitation at the moment),
>> we don't have to take care about that.
>>
>> Sadly, the place we do this, it does not show up in 'qm showcmd' as we
>> don't (want to) query the pci devices in that case, and then we don't
>> have a way of knowing if it's an NVIDIA card or not. But since this
>> is informational with QEMU anyway, i'd say we can ignore that.
>>
>> Signed-off-by: Dominik Csapak <d.csa...@proxmox.com>
>> ---
>> PVE/QemuServer.pm | 9 ++++++++-
>> PVE/QemuServer/PCI.pm | 4 +++-
>> 2 files changed, 11 insertions(+), 2 deletions(-)
>>
>> diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
>> index 7d9cf22..c706653 100644
>> --- a/PVE/QemuServer.pm
>> +++ b/PVE/QemuServer.pm
>> @@ -5594,12 +5594,19 @@ sub vm_start_nolock {
>> PVE::QemuServer::PCI::reserve_pci_usage($pci_id_list, $vmid,
>> $start_timeout);
>>
>> eval {
>> + my $uuid;
>> for my $id (sort keys %$pci_devices) {
>> my $d = $pci_devices->{$id};
>> for my $dev ($d->{pciid}->@*) {
>> - PVE::QemuServer::PCI::prepare_pci_device($vmid, $dev->{id},
>> $id, $d->{mdev});
>> + my $info = PVE::QemuServer::PCI::prepare_pci_device($vmid,
>> $dev->{id}, $id, $d->{mdev});
>> +
>> + # nvidia grid needs the uuid of the mdev as qemu parameter
>> + if ($d->{mdev} && !defined($uuid) && $info->{vendor} eq '10de')
>> {
>> + $uuid = PVE::QemuServer::PCI::generate_mdev_uuid($vmid,
>> $id);
>> + }
>> }
>> }
>> + push @$cmd, '-uuid', $uuid if defined($uuid);
>> };
>> if (my $err = $@) {
>> eval { PVE::QemuServer::PCI::remove_pci_reservation($pci_id_list) };
>> diff --git a/PVE/QemuServer/PCI.pm b/PVE/QemuServer/PCI.pm
>> index 23fe508..3d0e70e 100644
>> --- a/PVE/QemuServer/PCI.pm
>> +++ b/PVE/QemuServer/PCI.pm
>> @@ -253,7 +253,7 @@ sub get_pci_addr_map {
>> return $pci_addr_map;
>> }
>>
>> -my sub generate_mdev_uuid {
>> +sub generate_mdev_uuid {
>> my ($vmid, $index) = @_;
>> return sprintf("%08d-0000-0000-0000-%012d", $index, $vmid);
>> }
>> @@ -514,6 +514,8 @@ sub prepare_pci_device {
>> die "can't reset PCI device '$pciid'\n"
>> if $info->{has_fl_reset} && !PVE::SysFSTools::pci_dev_reset($info);
>> }
>> +
>> + return $info;
>> }
>>
>> my $RUNDIR = '/run/qemu-server';
>> --
>> 2.30.2
>
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