diff options
| author | Julien Grall <julien.grall@arm.com> | 2017-05-31 13:03:57 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-06-14 13:05:58 (GMT) |
| commit | 9636c086532baf9b042b7b7af809cb79e7d46e92 (patch) | |
| tree | b63032b9b01fd851d2923763b43a38aba415f526 /fs | |
| parent | 08229c119c426fc8666f1dc2822a8c38fc77fa6a (diff) | |
| download | linux-9636c086532baf9b042b7b7af809cb79e7d46e92.tar.xz | |
xen/privcmd: Support correctly 64KB page granularity when mapping memory
commit 753c09b5652bb4fe53e2db648002ec64b32b8827 upstream.
Commit 5995a68 "xen/privcmd: Add support for Linux 64KB page granularity" did
not go far enough to support 64KB in mmap_batch_fn.
The variable 'nr' is the number of 4KB chunk to map. However, when Linux
is using 64KB page granularity the array of pages (vma->vm_private_data)
contain one page per 64KB. Fix it by incrementing st->index correctly.
Furthermore, st->va is not correctly incremented as PAGE_SIZE !=
XEN_PAGE_SIZE.
Fixes: 5995a68 ("xen/privcmd: Add support for Linux 64KB page granularity")
Reported-by: Feng Kan <fkan@apm.com>
Signed-off-by: Julien Grall <julien.grall@arm.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
0 files changed, 0 insertions, 0 deletions