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Re: [PATCH v3 06/34] xen: avoid generation of empty asm/iommu.h
- To: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Thu, 4 Jan 2024 12:04:28 +0100
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- Cc: Paul Durrant <paul@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Thu, 04 Jan 2024 11:04:25 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 22.12.2023 16:12, Oleksii Kurochko wrote:
> Signed-off-by: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
The change looks okay-ish, but again needs a description: You want to
explain why you use the absolute minimum of the scopes the two (or,
in principle, possibly more) #ifdef-s cover.
Jan
> --- a/xen/include/xen/iommu.h
> +++ b/xen/include/xen/iommu.h
> @@ -337,7 +337,9 @@ extern int
> iommu_add_extra_reserved_device_memory(unsigned long start,
> extern int iommu_get_extra_reserved_device_memory(iommu_grdm_t *func,
> void *ctxt);
>
> +#ifdef CONFIG_HAS_PASSTHROUGH
> #include <asm/iommu.h>
> +#endif
>
> #ifndef iommu_call
> # define iommu_call(ops, fn, args...) ((ops)->fn(args))
> @@ -345,7 +347,9 @@ extern int
> iommu_get_extra_reserved_device_memory(iommu_grdm_t *func,
> #endif
>
> struct domain_iommu {
> +#ifdef CONFIG_HAS_PASSTHROUGH
> struct arch_iommu arch;
> +#endif
>
> /* iommu_ops */
> const struct iommu_ops *platform_ops;
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