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Some AMD EPYC VCPUs generated boot message of the type:
pci4: <unknown> at device 0.0 (no driver attached)
These are displayed for device class 0x13 devices, e.g.:
none8@pci0:130:0:0: class=0x130000 rev=0x00 hdr=0x00 vendor=0x1022 \
device=0x148a subvendor=0x1022 subdevice=0x148a
vendor = 'Advanced Micro Devices, Inc. [AMD]'
device = 'Starship/Matisse PCIe Dummy Function'
class = non-essential instrumentation
Since these devices serve no purpose (no driver attaches) I have
enabled the reporting of suich devices only for verbose boots (a
diversion from the patch provided in the PR).
A verbose boot will now display such devices as:
pci4: <non-essential instrumentation> at device 0.0 (no driver attached)
PR: 263469
Reported by: jfc@mit.edu (John F. Carr)
MFC after: 1 week
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|---|---|---|
| .. | ||
| controller | ||
| fixup_pci.c | ||
| hostb_pci.c | ||
| ignore_pci.c | ||
| isa_pci.c | ||
| pci.c | ||
| pci_dw.c | ||
| pci_dw.h | ||
| pci_dw_if.m | ||
| pci_dw_mv.c | ||
| pci_host_generic.c | ||
| pci_host_generic.h | ||
| pci_host_generic_acpi.c | ||
| pci_host_generic_acpi.h | ||
| pci_host_generic_fdt.c | ||
| pci_host_generic_fdt.h | ||
| pci_if.m | ||
| pci_iov.c | ||
| pci_iov.h | ||
| pci_iov_if.m | ||
| pci_iov_private.h | ||
| pci_iov_schema.c | ||
| pci_pci.c | ||
| pci_private.h | ||
| pci_subr.c | ||
| pci_user.c | ||
| pcib_if.m | ||
| pcib_private.h | ||
| pcib_support.c | ||
| pcireg.h | ||
| pcivar.h | ||
| schema_private.h | ||
| vga_pci.c | ||