diff options
| author | Juergen Gross <jgross@suse.com> | 2022-05-24 13:46:30 +0200 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2022-05-27 11:05:29 +0200 |
| commit | 49f8b459fc1de5e3712b57c8ccefae9ec45270f8 (patch) | |
| tree | a94aa459860a3d82cae0933e922e1cbfaa980766 /drivers/xen/xenbus | |
| parent | 5b3353949e89d48b4faf54a9cc241ee5d70df615 (diff) | |
xen: switch gnttab_end_foreign_access() to take a struct page pointer
Instead of a virtual kernel address use a pointer of the associated
struct page as second parameter of gnttab_end_foreign_access().
Most users have that pointer available already and are creating the
virtual address from it, risking problems in case the memory is
located in highmem.
gnttab_end_foreign_access() itself won't need to get the struct page
from the address again.
Suggested-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'drivers/xen/xenbus')
| -rw-r--r-- | drivers/xen/xenbus/xenbus_client.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/xen/xenbus/xenbus_client.c b/drivers/xen/xenbus/xenbus_client.c index d6fdd2d209d3..d5f3f763717e 100644 --- a/drivers/xen/xenbus/xenbus_client.c +++ b/drivers/xen/xenbus/xenbus_client.c @@ -439,7 +439,7 @@ void xenbus_teardown_ring(void **vaddr, unsigned int nr_pages, for (i = 0; i < nr_pages; i++) { if (grefs[i] != INVALID_GRANT_REF) { - gnttab_end_foreign_access(grefs[i], 0); + gnttab_end_foreign_access(grefs[i], NULL); grefs[i] = INVALID_GRANT_REF; } } |