On ma, 2016-08-15 at 12:53 +0100, Chris Wilson wrote:
> +int remap_io_mapping(struct vm_area_struct *vma,
> + unsigned long addr, unsigned long pfn, unsigned long size,
> + struct io_mapping *iomap)
> +{
> + struct remap_pfn r;
> + int err;
> +
> +#define MUST_SET (VM_IO | VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP)
> + if (WARN_ON((vma->vm_flags & MUST_SET) != MUST_SET))
> + return -EINVAL;
> +#undef MUST_SET
#define is bit overkill...
Other than that, should do the job.
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Regards, Joonas
--
Joonas Lahtinen
Open Source Technology Center
Intel Corporation
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