[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] [PATCH V4] tools/libxc, xen/x86: Added xc_set_mem_access_multi()

Hello Razvan,

On 07/09/16 10:12, Razvan Cojocaru wrote:
Currently it is only possible to set mem_access restrictions only for
a contiguous range of GFNs (or, as a particular case, for a single GFN).
This patch introduces a new libxc function taking an array of GFNs.
The alternative would be to set each page in turn, using a userspace-HV
roundtrip for each call, and triggering a TLB flush per page set.

Signed-off-by: Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>
Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>

Changes since V3:
 - Fixed ARM compilation (replaced ENOTSUP with EOPNOTSUPP, which is
   #defined in the in-tree errno.h). The multi code remains
   unimplemented for ARM (it depends on " [RFC 21/22] xen/arm: p2m:
   Re-implement p2m_set_mem_access using p2m_{set, get}_entry", and
   Julien Grall has gracefully accepted to defer implementation
   until after both patches go in).

For the ARM bits:

Acked-by: Julien Grall <julien.grall@xxxxxxx>


Julien Grall

Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.