somebody can help me ? 2017-03-08 14:34 GMT+08:00 rhett rhett <rhett.ker...@gmail.com>:
> here's some more error log from centos guest: > > Mar 7 05:38:07 localhost kernel: NVRM: loading NVIDIA UNIX x86_64 Kernel > Module 375.39 Tue Jan 31 20:47:00 PST 2017 (using threaded interrupts) > Mar 7 05:38:08 localhost kernel: nvidia-modeset: Loading NVIDIA Kernel > Mode Setting Driver for UNIX platforms 375.39 Tue Jan 31 19:41:48 PST 2017 > Mar 7 05:39:27 localhost kernel: NVRM: RmInitAdapter failed! > (0x24:0x51:1060) > Mar 7 05:39:27 localhost kernel: NVRM: rm_init_adapter failed for device > bearing minor number 0 > Mar 7 05:43:40 localhost kernel: NVRM: RmInitAdapter failed! > (0x24:0x51:1060) > Mar 7 05:43:40 localhost kernel: NVRM: rm_init_adapter failed for device > bearing minor number 0 > Mar 8 05:07:47 localhost kernel: nvidia: module license 'NVIDIA' taints > kernel. > Mar 8 05:07:47 localhost kernel: NVRM: loading NVIDIA UNIX x86_64 Kernel > Module > > 2017-03-08 14:31 GMT+08:00 rhett rhett <rhett.ker...@gmail.com>: > >> i have two guest , a windows 2008 server and a centos 7.2 . in windows, >> the device manager said the gpu can't start ,error code 10. >> in centos, when i run nvidia-smi, it said no device found. >> >> no specil vm configurations, whit the same config, i can use gpu >> successfully in my two gpu server. the biggest different is , that server >> is no pcie switcher. >> >> 2017-03-08 11:55 GMT+08:00 Alex Williamson <alex.william...@redhat.com>: >> >>> On Wed, 8 Mar 2017 11:26:17 +0800 >>> rhett rhett <rhett.ker...@gmail.com> wrote: >>> >>> > two gpus share the same irq , i found the reason. because the msi be >>> > disabled later , so irq 140 is being reused. >>> > >>> > but i don't know why somebady calls vfio_pci_ioctl to disable the msi. >>> >>> vfio just does what the guest requests, but you're really providing >>> hardly any more information than when you asked off list. My wild >>> guess, is that maybe you're running a Windows guest and not configuring >>> the VM for a vCPU type where Windows supports MSI. For more >>> assistance, please provide basic information, like the QEMU command >>> line or VM XML, also the PCI information from the host (sudo lspci >>> -vvv), and of course any error codes in the guest or an actual >>> description of how the device doesn't work in the guest. Thanks, >>> >>> Alex >>> >>> >>> > 2017-03-08 10:55 GMT+08:00 rhett rhett <rhett.ker...@gmail.com>: >>> > >>> > > i have a question about vfio , here is my description. >>> > > >>> > > i have 8 gpus in my server machine , but they are all behind a pcie >>> > > bridge. when i make a vfio passthrough , i can't use the gpus in my >>> guest >>> > > os. >>> > > dmesg shows the following message >>> > > >>> > > [ 662.208072] vfio-pci 0000:87:00.0: irq 140 for MSI/MSI-X >>> > > [ 725.761623] vfio-pci 0000:04:00.0: irq 140 for MSI/MSI-X >>> > > >>> > > i started two vm , one use 87 and another use 04, dmesg shows that >>> they >>> > > share the same irq 140 . is this normal ? >>> > > >>> > > i also saw the iommu groups, each gpu stays in a separate group， and >>> with >>> > > no other device in group. so this means ACS works correctly ? >>> > > >>> > > hope to get your helps ! >>> > > >>> >>> >> >
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