Re: [libvirt] [PATCH 0/4] Add HAP to domain features

Hardware features such as Extended Page Table and Nested Page Table augment hypervisor software techniques such as shadow page table. Adding HAP (hardware assisted paging) to the virDomainFeature enumeration allows users to select between hardware and software memory management mechanisms for their guests. I've seen reports [1] of users asking for this capability in the past. Patch 3 is an attempt to advertise the feature in hvm guest capabilities for the Xen hypervisor. I have not found a way to discover the presence of HAP support through the xen tools. Instead, the feature is only advertised on Xen >= 3.3, which sadly won't accommodate distro backports to older Xen versions. Thanks for your comments, Jim [1] http://www.mail-archive.com/fedora-xen@redhat.com/msg02680.html Jim Fehlig (4): Add HAP to virDomainFeature enum Add support for HAP feature to xen drivers Add HAP to xen hypervisor capabilities Document HAP domain feature docs/formatdomain.html.in | 5 +++++ docs/schemas/domain.rng | 7 ++++++- src/conf/domain_conf.c | 3 ++- src/conf/domain_conf.h | 1 + src/xen/xen_hypervisor.c | 10 ++++++++++ src/xen/xend_internal.c | 4 ++++ src/xen/xm_internal.c | 8 ++++++++ src/xenapi/xenapi_driver.c | 2 ++ src/xenapi/xenapi_utils.c | 2 ++ 9 files changed, 40 insertions(+), 2 deletions(-)