x86/iommu: add comment regarding setting of need_sync
authorRoger Pau Monné <roger.pau@citrix.com>
Tue, 23 Jul 2019 15:00:07 +0000 (17:00 +0200)
committerJan Beulich <jbeulich@suse.com>
Tue, 23 Jul 2019 15:00:07 +0000 (17:00 +0200)
commit52fc4aaf1613e49d018bf3c5b1899b131ee2f417
tree7734051480942df491ee262f4e49294bfeeea174
parent0c38c61aad2106e23a5fcab7e435671fb39dc44c
x86/iommu: add comment regarding setting of need_sync

Clarify why relaxed hardware domains don't need iommu page-table
syncing.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
xen/drivers/passthrough/iommu.c