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SubjectRe: [PATCH RFC 1/5] vringfd syscall
Rusty Russell wrote:
> +asmlinkage long sys_vringfd(void __user *addr,
> + unsigned num_descs,
> + u16 __user *last_used)
> +{
> + int fd, err;
> + struct file *filp;
> + struct vring_info *vr;
> +
> + /* Must be a power of two, and representable by u16 */
> + if (!num_descs || (num_descs & (num_descs-1)) || num_descs > 65536) {
>

65536 doesn't fit in u16.

J


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