drivers/xen/privcmd.c

634 	struct privcmd_dm_op kdata;
643 	if (copy_from_user(&kdata, udata, sizeof(kdata)))
647 	if (data->domid != DOMID_INVALID && data->domid != kdata.dom)
650 	if (kdata.num == 0)
653 	if (kdata.num > privcmd_dm_op_max_num)
656 	kbufs = kcalloc(kdata.num, sizeof(*kbufs), GFP_KERNEL);
660 	if (copy_from_user(kbufs, kdata.ubufs,
661 			   sizeof(*kbufs) * kdata.num)) {
666 	for (i = 0; i < kdata.num; i++) {
689 	xbufs = kcalloc(kdata.num, sizeof(*xbufs), GFP_KERNEL);
695 	rc = lock_pages(kbufs, kdata.num, pages, nr_pages, &pinned);
699 	for (i = 0; i < kdata.num; i++) {
705 	rc = HYPERVISOR_dm_op(kdata.dom, kdata.num, xbufs);
740 	struct privcmd_mmap_resource kdata;
745 	if (copy_from_user(&kdata, udata, sizeof(kdata)))
749 	if (data->domid != DOMID_INVALID && data->domid != kdata.dom)
753 	if (!!kdata.addr != !!kdata.num)
756 	xdata.domid = kdata.dom;
757 	xdata.type = kdata.type;
758 	xdata.id = kdata.id;
760 	if (!kdata.addr && !kdata.num) {
770 	vma = find_vma(mm, kdata.addr);
776 	pfns = kcalloc(kdata.num, sizeof(*pfns), GFP_KERNEL | __GFP_NOWARN);
784 		unsigned int nr = DIV_ROUND_UP(kdata.num, XEN_PFN_PER_PAGE);
794 		for (i = 0; i < kdata.num; i++) {
803 	xdata.frame = kdata.idx;
804 	xdata.nr_frames = kdata.num;
816 		rc = xen_remap_vma_range(vma, kdata.addr, kdata.num << PAGE_SHIFT);
820 			DOMID_SELF : kdata.dom;
825 						 kdata.addr & PAGE_MASK,
826 						 pfns, kdata.num, errs,
831 		else if (num != kdata.num) {
854 	struct privcmd_pcidev_get_gsi kdata;
856 	if (copy_from_user(&kdata, udata, sizeof(kdata)))
859 	rc = xen_acpi_get_gsi_from_sbdf(kdata.sbdf);
863 	kdata.gsi = rc;
864 	if (copy_to_user(udata, &kdata, sizeof(kdata)))