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mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-25 05:34:00 +08:00
linux-next/arch/arm64/xen
Paul Durrant ab520be8cd 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>
2017-02-14 15:13:43 -05:00
..
hypercall.S xen/privcmd: Add IOCTL_PRIVCMD_DM_OP 2017-02-14 15:13:43 -05:00
Makefile ARM64: XEN: Add a function to initialize Xen specific UEFI runtime services 2016-07-06 10:34:46 +01:00