]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
xen/gntdev: Grant maps should not be subject to NUMA balancing
authorBoris Ostrovsky <boris.ostrovsky@oracle.com>
Tue, 10 Nov 2015 20:10:33 +0000 (15:10 -0500)
committerDavid Vrabel <david.vrabel@citrix.com>
Thu, 26 Nov 2015 17:47:35 +0000 (17:47 +0000)
commit9c17d96500f78d7ecdb71ca6942830158bc75a2b
tree3c263b63881f38914b3725794af61d49486fde25
parentabed7d0710e8f892c267932a9492ccf447674fb8
xen/gntdev: Grant maps should not be subject to NUMA balancing

Doing so will cause the grant to be unmapped and then, during
fault handling, the fault to be mistakenly treated as NUMA hint
fault.

In addition, even if those maps could partcipate in NUMA
balancing, it wouldn't provide any benefit since we are unable
to determine physical page's node (even if/when VNUMA is
implemented).

Marking grant maps' VMAs as VM_IO will exclude them from being
part of NUMA balancing.

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
drivers/xen/gntdev.c