Re: [PATCH 12/14] hw/vfio/ap: Check CONFIG_IOMMUFD at runtime using iommufd_builtin()

[Richard Henderson <richard.henderson@linaro.org>]

On 3/7/25 10:03, Philippe Mathieu-Daudé wrote:
> Convert the compile time check on the CONFIG_IOMMUFD definition
> by a runtime one by calling iommufd_builtin().
> 
> Since the file doesn't use any target-specific knowledge anymore,
> move it to system_ss[] to build it once.
> 
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> ---
>   target/s390x/kvm/kvm_s390x.h |  2 +-
>   hw/vfio/ap.c                 | 27 +++++++++++++--------------
>   hw/vfio/meson.build          |  2 +-
>   3 files changed, 15 insertions(+), 16 deletions(-)
> 
> diff --git a/target/s390x/kvm/kvm_s390x.h b/target/s390x/kvm/kvm_s390x.h
> index 649dae5948a..7b1cce3e60d 100644
> --- a/target/s390x/kvm/kvm_s390x.h
> +++ b/target/s390x/kvm/kvm_s390x.h
> @@ -10,7 +10,7 @@
>   #ifndef KVM_S390X_H
>   #define KVM_S390X_H
>   
> -#include "cpu-qom.h"
> +#include "target/s390x/cpu-qom.h"
>   
>   struct kvm_s390_irq;
>   
> diff --git a/hw/vfio/ap.c b/hw/vfio/ap.c
> index c7ab4ff57ad..832b98532ea 100644
> --- a/hw/vfio/ap.c
> +++ b/hw/vfio/ap.c
> @@ -11,7 +11,6 @@
>    */
>   
>   #include "qemu/osdep.h"
> -#include CONFIG_DEVICES /* CONFIG_IOMMUFD */
>   #include <linux/vfio.h>
>   #include <sys/ioctl.h>
>   #include "qapi/error.h"
> @@ -24,7 +23,7 @@
>   #include "qemu/module.h"
>   #include "qemu/option.h"
>   #include "qemu/config-file.h"
> -#include "kvm/kvm_s390x.h"
> +#include "target/s390x/kvm/kvm_s390x.h"

Do I take from this that this is actually a target-specific device?
Otherwise the two s390x changes are confusing.
Is it built once already, due to only being enabled for qemu-system-s390x?
If so, I question the need to move it out of specific_ss at all.

Anyway, this is two changes -- one for iommufd_builtin and one for meson.build.


r~