Thanks Jan, now it works with INTx. Jiafei.
在2020年11月12日星期四 UTC+8 下午9:05:15<[email protected]> 写道： > On 12.11.20 09:50, Peter pan wrote: > > Dear Jailhouse Community, > > > > I am runing Jailhouse on kernel v5.4, and port some ivshmem patches > > from http://git.kiszka.org/?p=linux.git;a=summary > > <http://git.kiszka.org/?p=linux.git;a=summary> > > > > The issue I have is uio_shmem and ivshmem-net will probe failed when I > > use MSI-X mode for vPCI after I run Jailhouse enable command. Please > > find the folowing log: > > > > [ 21.581019] jailhouse: loading out-of-tree module taints kernel. > > > > [ 30.000988] pci-host-generic fb500000.pci: host bridge /pci@0 ranges: > > > > [ 30.000997] pci-host-generic fb500000.pci: MEM > > 0xfb600000..0xfb603fff -> 0xfb600000 > > > > [ 30.001028] pci-host-generic fb500000.pci: ECAM at [mem > > 0xfb500000-0xfb5fffff] for [bus 00] > > > > [ 30.001081] pci-host-generic fb500000.pci: PCI host bridge to bus > 0003:00 > > > > [ 30.001085] pci_bus 0003:00: root bus resource [bus 00] > > > > [ 30.001087] pci_bus 0003:00: root bus resource [mem > > 0xfb600000-0xfb603fff] > > > > [ 30.001105] pci 0003:00:00.0: [110a:4106] type 00 class 0xff0000 > > > > [ 30.001128] pci 0003:00:00.0: reg 0x10: [mem 0x00000000-0x00000fff] > > > > [ 30.001136] pci 0003:00:00.0: reg 0x14: [mem 0x00000000-0x000001ff] > > > > [ 30.001340] pci 0003:00:01.0: [110a:4106] type 00 class 0xff0001 > > > > [ 30.001359] pci 0003:00:01.0: reg 0x10: [mem 0x00000000-0x00000fff] > > > > [ 30.001368] pci 0003:00:01.0: reg 0x14: [mem 0x00000000-0x000001ff] > > > > [ 30.002389] pci 0003:00:00.0: BAR 0: assigned [mem > 0xfb600000-0xfb600fff] > > > > [ 30.002397] pci 0003:00:01.0: BAR 0: assigned [mem > 0xfb601000-0xfb601fff] > > > > [ 30.002403] pci 0003:00:00.0: BAR 1: assigned [mem > 0xfb602000-0xfb6021ff] > > > > [ 30.002409] pci 0003:00:01.0: BAR 1: assigned [mem > 0xfb602200-0xfb6023ff] > > > > [ 30.002478] uio_ivshmem 0003:00:00.0: enabling device (0000 -> 0002) > > > > [ 30.002505] uio_ivshmem 0003:00:00.0: state_table at > > 0x00000000fb700000, size 0x0000000000001000 > > > > [ 30.002512] uio_ivshmem 0003:00:00.0: rw_section at > > 0x00000000fb701000, size 0x0000000000009000 > > > > [ 30.002520] uio_ivshmem 0003:00:00.0: input_sections at > > 0x00000000fb70a000, size 0x0000000000006000 > > > > [ 30.002524] uio_ivshmem 0003:00:00.0: output_section at > > 0x00000000fb70a000, size 0x0000000000002000 > > > > [ 30.002576] uio_ivshmem: probe of 0003:00:00.0 failed with error -28 > > > > [ 30.002620] ivshmem-net 0003:00:01.0: enabling device (0000 -> 0002) > > > > [ 30.002664] ivshmem-net 0003:00:01.0: TX memory at > > 0x00000000fb801000, size 0x000000000007f000 > > > > [ 30.002667] ivshmem-net 0003:00:01.0: RX memory at > > 0x00000000fb880000, size 0x000000000007f000 > > > > [ 30.047630] ivshmem-net: probe of 0003:00:01.0 failed with error -28 > > > > [ 30.047714] The Jailhouse is opening. > > > > > > After some investigation I found the dts node of vPIC is added to root > > cell by using vpci_template.dts, the Jailhouse > > driver create_vpci_of_overlay() in driver/pci.c can't add the handler of > > "msi-parent" to this PCI node, but the kernel driver of the virtual PCI > > device use the following function > > ret = pci_alloc_irq_vectors(pdev, 1, 2, PCI_IRQ_LEGACY | PCI_IRQ_MSIX); > > So the driver will probe MSIX irq for the device, because there is no > > msi controller is speficied to vPCI, the result is no irq-domain is > > provided to this PCI and irq allocated failed. > > > > so how to fix such issue? Appreciate any comments and suggestions, > thanks. > > The vPCI support in Jailhouse injects interrupts as legacy INTx. For > that, you need to provide up to 4 (less if you have less ivshmem > devices) consecutive SPIs that are not in use by real devices (in any > cell). See other arm64 configs, specifically look for vpci_irq_base. > > Jan > -- > Siemens AG, T RDA IOT > Corporate Competence Center Embedded Linux > > -- You received this message because you are subscribed to the Google Groups "Jailhouse" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/jailhouse-dev/650b2d0f-b721-44a4-9572-28c2a88a7559n%40googlegroups.com.
