Re: [PATCH v2 3/4] hw/xen/Kconfig: Introduce XEN_PV config

["Philippe Mathieu-Daudé" <f4bug@amsat.org>]

On 1/31/21 3:18 PM, Philippe Mathieu-Daudé wrote:
> xenpv machine requires USB, IDE_PIIX and PCI:
> 
>   /usr/bin/ld:
>   libcommon.fa.p/hw_xen_xen-legacy-backend.c.o: in function `xen_be_register_common':
>   hw/xen/xen-legacy-backend.c:757: undefined reference to `xen_usb_ops'
>   libqemu-i386-softmmu.fa.p/hw_i386_xen_xen_platform.c.o: in function `unplug_disks':
>   hw/i386/xen/xen_platform.c:153: undefined reference to `pci_piix3_xen_ide_unplug'
>   libqemu-i386-softmmu.fa.p/hw_i386_xen_xen_platform.c.o: in function `pci_unplug_nics':
>   hw/i386/xen/xen_platform.c:137: undefined reference to `pci_for_each_device'
>   libqemu-i386-softmmu.fa.p/hw_i386_xen_xen_platform.c.o: in function `xen_platform_realize':
>   hw/i386/xen/xen_platform.c:483: undefined reference to `pci_register_bar'
> 
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> ---
>  hw/Kconfig     | 1 +
>  hw/xen/Kconfig | 7 +++++++
>  2 files changed, 8 insertions(+)
>  create mode 100644 hw/xen/Kconfig
> 
> diff --git a/hw/Kconfig b/hw/Kconfig
> index 5ad3c6b5a4b..f2a95591d94 100644
> --- a/hw/Kconfig
> +++ b/hw/Kconfig
> @@ -39,6 +39,7 @@ source usb/Kconfig
>  source virtio/Kconfig
>  source vfio/Kconfig
>  source watchdog/Kconfig
> +source xen/Kconfig
>  
>  # arch Kconfig
>  source arm/Kconfig
> diff --git a/hw/xen/Kconfig b/hw/xen/Kconfig
> new file mode 100644
> index 00000000000..0b8427d6bd1
> --- /dev/null
> +++ b/hw/xen/Kconfig
> @@ -0,0 +1,7 @@
> +config XEN_PV
> +    bool
> +    default y if XEN
> +    depends on XEN
> +    select PCI
> +    select USB
> +    select IDE_PIIX

Well this is not enough, --without-default-devices fails:

/usr/bin/ld: libqemu-x86_64-softmmu.fa.p/softmmu_physmem.c.o: in
function `cpu_physical_memory_set_dirty_range':
include/exec/ram_addr.h:333: undefined reference to
`xen_hvm_modified_memory'
/usr/bin/ld: libqemu-x86_64-softmmu.fa.p/softmmu_physmem.c.o: in
function `ram_block_add':
softmmu/physmem.c:1873: undefined reference to `xen_ram_alloc'
/usr/bin/ld: libqemu-x86_64-softmmu.fa.p/softmmu_physmem.c.o: in
function `cpu_physical_memory_set_dirty_range':
include/exec/ram_addr.h:333: undefined reference to
`xen_hvm_modified_memory'
/usr/bin/ld: include/exec/ram_addr.h:333: undefined reference to
`xen_hvm_modified_memory'
/usr/bin/ld: libqemu-x86_64-softmmu.fa.p/softmmu_memory.c.o: in function
`cpu_physical_memory_set_dirty_range':
include/exec/ram_addr.h:333: undefined reference to
`xen_hvm_modified_memory'
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.