Re: [PATCH v2 2/2] ppc/pnv: Fix PCI_EXPRESS dependency

[Thomas Huth <thuth@redhat.com>]

On 06/02/2020 00.20, Laurent Vivier wrote:
> When PHB4 bridge has been added, the dependencies to PCIE_PORT has been
> added to XIVE_SPAPR and indirectly to PSERIES.
> The build of the PowerNV machine is fine while we also build the PSERIES
> machine.
> If we disable the PSERIES machine, the PowerNV build fails because the
> PCI Express files are not built:
> 
> /usr/bin/ld: hw/ppc/pnv.o: in function `pnv_chip_power8_pic_print_info':
> .../hw/ppc/pnv.c:623: undefined reference to `pnv_phb3_msi_pic_print_info'
> /usr/bin/ld: hw/ppc/pnv.o: in function `pnv_chip_power9_pic_print_info':
> .../hw/ppc/pnv.c:639: undefined reference to `pnv_phb4_pic_print_info'
> /usr/bin/ld: ../hw/usb/hcd-ehci-pci.o: in function `usb_ehci_pci_write_config':
> .../hw/usb/hcd-ehci-pci.c:129: undefined reference to `pci_default_write_config'
> /usr/bin/ld: ../hw/usb/hcd-ehci-pci.o: in function `usb_ehci_pci_realize':
> .../hw/usb/hcd-ehci-pci.c:68: undefined reference to `pci_allocate_irq'
> /usr/bin/ld: .../hw/usb/hcd-ehci-pci.c:72: undefined reference to `pci_register_bar'
> /usr/bin/ld: ../hw/usb/hcd-ehci-pci.o:(.data.rel+0x50): undefined reference to `vmstate_pci_device'
> 
> This patch fixes the problem by adding needed dependencies to POWERNV.
> 
> Fixes: 4f9924c4d4cf ("ppc/pnv: Add models for POWER9 PHB4 PCIe Host bridge")
> Signed-off-by: Laurent Vivier <lvivier@redhat.com>
> ---
> 
> Notes:
>     v2: remove PCI already selected by PCI_EXPRESS
>         remove PCIE_PORT, set by default to yes with PCI_DEVICES
> 
>  hw/ppc/Kconfig | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/hw/ppc/Kconfig b/hw/ppc/Kconfig
> index 354828bf132f..dd86e664d215 100644
> --- a/hw/ppc/Kconfig
> +++ b/hw/ppc/Kconfig
> @@ -29,6 +29,8 @@ config POWERNV
>      select XICS
>      select XIVE
>      select FDT_PPC
> +    select PCI_EXPRESS
> +    select MSI_NONBROKEN

When only using CONFIG_POWERNV=y in the default-config and using
"configure --without-default-devices --target-list=ppc64-softmmu" I
still get a linking error:

  LINK    ppc64-softmmu/qemu-system-ppc64
hw/ppc/pnv.o: In function `pnv_init':
hw/ppc/pnv.c:846: undefined reference to `serial_hds_isa_init'
collect2: error: ld returned 1 exit status
make[1]: *** [Makefile:206: qemu-system-ppc64] Error 1

Looks like there is still a "select SERIAL" or something similar missing
here?

 Thomas