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| author |   Paul Durrant <paul.durrant@citrix.com> | 2017-02-13 17:03:23 +0000 |
|---|---|---|
| committer |   Boris Ostrovsky <boris.ostrovsky@oracle.com> | 2017-02-14 15:13:43 -0500 |
| commit | ab520be8cd5d56867fc95cfbc34b90880faf1f9d (patch) | |
| tree | 4c432a918ffbd6308f752eaac36b322b811582b1 /include/xen/interface/xen.h | |
| parent | xen/privcmd: return -ENOTTY for unimplemented IOCTLs (diff) | |
| download | wireguard-linux-ab520be8cd5d56867fc95cfbc34b90880faf1f9d.tar.xz wireguard-linux-ab520be8cd5d56867fc95cfbc34b90880faf1f9d.zip | |
xen/privcmd: Add IOCTL_PRIVCMD_DM_OP
Recently a new dm_op[1] hypercall was added to Xen to provide a mechanism
for restricting device emulators (such as QEMU) to a limited set of
hypervisor operations, and being able to audit those operations in the
kernel of the domain in which they run.
This patch adds IOCTL_PRIVCMD_DM_OP as gateway for __HYPERVISOR_dm_op.
NOTE: There is no requirement for user-space code to bounce data through
locked memory buffers (as with IOCTL_PRIVCMD_HYPERCALL) since
privcmd has enough information to lock the original buffers
directly.
[1] http://xenbits.xen.org/gitweb/?p=xen.git;a=commit;h=524a98c2
Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Diffstat (limited to 'include/xen/interface/xen.h')
| -rw-r--r-- | include/xen/interface/xen.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/xen/interface/xen.h b/include/xen/interface/xen.h index 1b0d189cd3d3..4f4830ef8f93 100644 --- a/include/xen/interface/xen.h +++ b/include/xen/interface/xen.h @@ -81,6 +81,7 @@ #define __HYPERVISOR_tmem_op 38 #define __HYPERVISOR_xc_reserved_op 39 /* reserved for XenClient */ #define __HYPERVISOR_xenpmu_op 40 +#define __HYPERVISOR_dm_op 41 /* Architecture-specific hypercall definitions. */ #define __HYPERVISOR_arch_0 48 |