Commit cee03ca3 authored by Juergen Gross's avatar Juergen Gross Committed by Greg Kroah-Hartman
Browse files

xen/usb: don't use arbitrary_virt_to_machine() 



arbitrary_virt_to_machine() is meant to be used in PV guests only.
Replace its usage with virt_to_gfn().

Signed-off-by: default avatarJuergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20220311103500.12885-1-jgross@suse.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 61ef1709

drivers/usb/host/xen-hcd.c

+1 −3
Original line number Diff line number Diff line
@@ -589,14 +589,12 @@ static void xenhcd_gnttab_map(struct xenhcd_info *info, void *addr, int length, 
			      int nr_pages, int flags)

{

	grant_ref_t ref;

	unsigned long buffer_mfn;

	unsigned int offset;

	unsigned int len = length;

	unsigned int bytes;

	int i;



	for (i = 0; i < nr_pages; i++) {

		buffer_mfn = PFN_DOWN(arbitrary_virt_to_machine(addr).maddr);

		offset = offset_in_page(addr);



		bytes = PAGE_SIZE - offset;
@@ -605,7 +603,7 @@ static void xenhcd_gnttab_map(struct xenhcd_info *info, void *addr, int length, 


		ref = gnttab_claim_grant_reference(gref_head);

		gnttab_grant_foreign_access_ref(ref, info->xbdev->otherend_id,

						buffer_mfn, flags);

						virt_to_gfn(addr), flags);

		seg[i].gref = ref;

		seg[i].offset = (__u16)offset;

		seg[i].length = (__u16)bytes;