Re: [PATCH v4 41/41] vfio: Compile out iommufd for PPC target

["Cédric Le Goater" <clg@redhat.com>]

On 11/2/23 08:13, Zhenzhong Duan wrote:
> Since PPC doesn't support IOMMUFD, make iommufd related code
> compiled out.
> 
> Suggested-by: Cédric Le Goater <clg@redhat.com>
> Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Please drop this patch.

Instead, add

     imply IOMMUFD

in hw/{i386,s390x,arm}/Kconfig for platforms supporting IOMMUFD.

Thanks,

C.



> ---
>   hw/vfio/common.c     | 2 +-
>   hw/vfio/pci.c        | 2 +-
>   hw/vfio/platform.c   | 2 +-
>   backends/meson.build | 4 ++--
>   hw/vfio/meson.build  | 2 +-
>   5 files changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/hw/vfio/common.c b/hw/vfio/common.c
> index 1c9203183d..000717cef3 100644
> --- a/hw/vfio/common.c
> +++ b/hw/vfio/common.c
> @@ -1504,7 +1504,7 @@ int vfio_attach_device(char *name, VFIODevice *vbasedev,
>   {
>       const VFIOIOMMUOps *ops;
>   
> -#ifdef CONFIG_IOMMUFD
> +#if defined(CONFIG_IOMMUFD) && !defined(TARGET_PPC)
>       if (vbasedev->iommufd) {
>           ops = &vfio_iommufd_ops;
>       } else
> diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
> index d8f658ea47..2287e45119 100644
> --- a/hw/vfio/pci.c
> +++ b/hw/vfio/pci.c
> @@ -3550,7 +3550,7 @@ static Property vfio_pci_dev_properties[] = {
>                                      qdev_prop_nv_gpudirect_clique, uint8_t),
>       DEFINE_PROP_OFF_AUTO_PCIBAR("x-msix-relocation", VFIOPCIDevice, msix_relo,
>                                   OFF_AUTOPCIBAR_OFF),
> -#ifdef CONFIG_IOMMUFD
> +#if defined(CONFIG_IOMMUFD) && !defined(TARGET_PPC)
>       DEFINE_PROP_LINK("iommufd", VFIOPCIDevice, vbasedev.iommufd,
>                        TYPE_IOMMUFD_BACKEND, IOMMUFDBackend *),
>   #endif
> diff --git a/hw/vfio/platform.c b/hw/vfio/platform.c
> index aa0b2b9583..c8f4ae5a06 100644
> --- a/hw/vfio/platform.c
> +++ b/hw/vfio/platform.c
> @@ -648,7 +648,7 @@ static Property vfio_platform_dev_properties[] = {
>       DEFINE_PROP_UINT32("mmap-timeout-ms", VFIOPlatformDevice,
>                          mmap_timeout, 1100),
>       DEFINE_PROP_BOOL("x-irqfd", VFIOPlatformDevice, irqfd_allowed, true),
> -#ifdef CONFIG_IOMMUFD
> +#if defined(CONFIG_IOMMUFD) && !defined(TARGET_PPC)
>       DEFINE_PROP_LINK("iommufd", VFIOPlatformDevice, vbasedev.iommufd,
>                        TYPE_IOMMUFD_BACKEND, IOMMUFDBackend *),
>   #endif
> diff --git a/backends/meson.build b/backends/meson.build
> index 05ac57ff15..9dbdfa87f7 100644
> --- a/backends/meson.build
> +++ b/backends/meson.build
> @@ -21,9 +21,9 @@ if have_vhost_user
>   endif
>   system_ss.add(when: 'CONFIG_VIRTIO_CRYPTO', if_true: files('cryptodev-vhost.c'))
>   if have_iommufd
> -  system_ss.add(files('iommufd.c'))
> +  system_ss.add(when: 'TARGET_PPC', if_false: files('iommufd.c'))
>   else
> -  system_ss.add(files('iommufd-stub.c'))
> +  system_ss.add(when: 'TARGET_PPC', if_false: files('iommufd-stub.c'))
>   endif
>   if have_vhost_user_crypto
>     system_ss.add(when: 'CONFIG_VIRTIO_CRYPTO', if_true: files('cryptodev-vhost-user.c'))
> diff --git a/hw/vfio/meson.build b/hw/vfio/meson.build
> index 9cae2c9e21..4423bb3cd4 100644
> --- a/hw/vfio/meson.build
> +++ b/hw/vfio/meson.build
> @@ -8,7 +8,7 @@ vfio_ss.add(files(
>     'migration.c',
>   ))
>   if have_iommufd
> -  vfio_ss.add(files('iommufd.c'))
> +  vfio_ss.add(when: 'TARGET_PPC', if_false: files('iommufd.c'))
>   endif
>   vfio_ss.add(when: 'CONFIG_VFIO_PCI', if_true: files(
>     'display.c',