[adding linux-pci mailing list] On 8/29/22 10:59, Steven J Abner wrote: > Hi > Building a kernel tailored for AMD 2400g on ASRock B450 using 5.18.12 as base, OS > is Elementary 6.1 on top of Ubuntu 20.04.5. > In a config I changed some which lead to this query,'cause not sure what it means. > So up to you see if it is of concern. Notation igpu# refers to build sequence tests. > Also note that pcieport may affect other drivers? > > config differences > igpu33 > # CONFIG_PCIEPORTBUS is not set > # CONFIG_PCI_IOV is not set > # CONFIG_VGA_ARB is not set > # CONFIG_HOTPLUG_PCI is not set > igpu32 > CONFIG_PCIEPORTBUS=y > CONFIG_HOTPLUG_PCI_PCIE=y > CONFIG_PCIEAER=y > # CONFIG_PCIEAER_INJECT is not set > # CONFIG_PCIE_ECRC is not set > CONFIG_PCIE_PME=y > CONFIG_PCIE_DPC=y > # CONFIG_PCIE_EDR is not set > CONFIG_PCI_REALLOC_ENABLE_AUTO=y > # CONFIG_PCI_PF_STUB is not set > CONFIG_PCI_IOV=y > CONFIG_VGA_ARB=y > CONFIG_VGA_ARB_MAX_GPUS=16 > CONFIG_HOTPLUG_PCI=y > CONFIG_HOTPLUG_PCI_ACPI=y > # CONFIG_HOTPLUG_PCI_ACPI_IBM is not set > CONFIG_HOTPLUG_PCI_CPCI=y > # CONFIG_HOTPLUG_PCI_CPCI_ZT5550 is not set > # CONFIG_HOTPLUG_PCI_CPCI_GENERIC is not set > CONFIG_HOTPLUG_PCI_SHPC=y > # CONFIG_RAPIDIO_TSI721 is not set > # CONFIG_EEEPC_LAPTOP is not set > > lspci differences: > start with identical: > 00:00.0 Host bridge > 00:00.2 IOMMU > 00:01.0 Host bridge > > kernel builds after igpu33 stable flags, only irq differences > kernel builds upto igpu32 flags differ including non-pcieport drivers, > there was a few builds where flags matched out of 32 different builds > I thought was normal that flags changed prior to 33-37 being very stable. > > under 00:01.1 PCI bridge: > igpu33 > Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- > DevCtl: CorrErr- NonFatalErr- FatalErr- UnsupReq- > RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- CRSVisible+ > Capabilities: [a0] MSI: Enable- Count=1/1 Maskable- 64bit+ > Address: 0000000000000000 Data: 0000 > RootCmd: CERptEn- NFERptEn- FERptEn- > > igpu32 > Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ > Interrupt: pin ? routed to IRQ 26 > DevCtl: CorrErr+ NonFatalErr+ FatalErr+ UnsupReq+ > RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna+ CRSVisible+ > Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+ > Address: 00000000fee00000 Data: 0000 > RootCmd: CERptEn+ NFERptEn+ FERptEn+ > Kernel driver in use: pcieport > > under these, nearly same readout as above (32vs33 use of pcieport) > 00:01.6 PCI bridge > 00:08.1 PCI bridge > 00:08.2 PCI bridge > 11:01.0 PCI bridge > 11:02.0 PCI bridge > 15:00.2 PCI bridge > 1d:00.0 PCI bridge > 1d:01.0 PCI bridge > 1d:04.0 PCI bridge > 1d:05.0 PCI bridge > 1d:06.0 PCI bridge > 1d:07.0 PCI bridge > > on non-pcieport drivers minor differences in +- states > on nvme added line: > Physical Slot: 0 > but +- state can change like others > > dmesg differences (alphabetical): > igu33 > acpi PNP0A08:00: PCIe port services disabled; not requesting _OSC control > igpu32 > acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5 > acpi PNP0A08:00: _OSC: OS now controls [PCIeHotplug PME AER PCIeCapability] > acpi PNP0A08:00: _OSC: platform does not support [SHPCHotplug LTR] > amdgpu 0000:38:00.0: vgaarb: deactivate vga console > pci 0000:38:00.0: vgaarb: bridge control possible > pci 0000:38:00.0: vgaarb: setting as boot VGA device > pci 0000:38:00.0: vgaarb: VGA device added: decodes=io+mem,owns=none,locks=none > pcieport 0000:00:01.1: AER: enabled with IRQ 26 > pcieport 0000:00:01.1: PME: Signaling with IRQ 26 > pcieport 0000:00:01.2: AER: enabled with IRQ 27 > pcieport 0000:00:01.2: PME: Signaling with IRQ 27 > pcieport 0000:00:01.6: AER: enabled with IRQ 28 > pcieport 0000:00:01.6: pciehp: Slot #0 AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug+ Surprise- Interlock- NoCompl+ IbPresDis- LLActRep+ > pcieport 0000:00:01.6: PME: Signaling with IRQ 28 > pcieport 0000:00:08.1: PME: Signaling with IRQ 29 > pcieport 0000:00:08.2: PME: Signaling with IRQ 30 > shpchp: Standard Hot Plug PCI Controller Driver version: 0.4 > vgaarb: loaded > > Steve > > I wish to be personally CC'ed the answers/comments posted to the list > in response to your posting, please. > > > > > > -- ~Randy
