> From: Jason Gunthorpe <jgg@xxxxxxxxxx>
> Sent: Wednesday, August 31, 2022 9:02 AM
> #ifdef CONFIG_VFIO_NOIOMMU
> -static bool noiommu __read_mostly;
> +static bool vfio_noiommu __read_mostly;
> module_param_named(enable_unsafe_noiommu_mode,
> - noiommu, bool, S_IRUGO | S_IWUSR);
> + vfio_noiommu, bool, S_IRUGO | S_IWUSR);
> MODULE_PARM_DESC(enable_unsafe_noiommu_mode, "Enable UNSAFE,
> no-IOMMU mode. This mode provides no device isolation, no DMA
> translation, no host kernel protection, cannot be used for device assignment
> to virtual machines, requires RAWIO permissions, and will taint the kernel. If
> you do not know what this is for, step away. (default: false)");
> +#else
> +enum { vfio_noiommu = false };
> #endif
what is the benefit of enum here?
