[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCHv4] xen/gntdev: add ioctl for grant copy
On 01/12/15 16:43, David Vrabel wrote: > Add IOCTL_GNTDEV_GRANT_COPY to allow applications to copy between user > space buffers and grant references. > > This interface is similar to the GNTTABOP_copy hypercall ABI except > the local buffers are provided using a virtual address (instead of a > GFN and offset). To avoid userspace from having to page align its > buffers the driver will use two or more ops if required. > > If the ioctl returns 0, the application must check the status of each > segment with the segments status field. If the ioctl returns a -ve > error code (EINVAL or EFAULT), the status of individual ops is > undefined. Applied to for-linus-4.5. David _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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