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xen/usb: don't use arbitrary_virt_to_machine()

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

Signed-off-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20220311103500.12885-1-jgross@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Juergen Gross 2022-03-11 11:35:00 +01:00 committed by Greg Kroah-Hartman
parent 61ef1709ee
commit cee03ca3cb
1 changed files with 1 additions and 3 deletions
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4
drivers/usb/host/xen-hcd.c
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@ -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;