Re: [libvirt] [PATCHv6] virtio-rng: Add rate limiting options for virtio-RNG

Qemu's implementation of virtio RNG supports rate limiting of the entropy used. This patch exposes the option to tune this functionality. This patch is based on qemu commit 904d6f588063fb5ad2b61998acdf1e73fb4 The rate limiting is exported in the XML as: <devices> ... <rng model='virtio'> <rate period='1234'>4321</rate>

<backend model='random'/> </rng> ... --- Notes: Version 6: - use just attributes in XML instead of mixed attribute/contents - switch rate unit to bytes - tweak the rest to comply with the changes Version 5: - adjust after forbiding arbitrary name passthrough - rebase to master Version 4: - Reword docs - state it is available since 1.0.4 as the tree is frozen and this was actually never acked before Version 3: - State the time unit in docs Version 2: - qemu uses bytes/period, adapt the value according to that docs/formatdomain.html.in | 13 +++++++++++++ docs/schemas/domaincommon.rng | 21 ++++++++++++++++++++- src/conf/domain_conf.c | 19 +++++++++++++++++++ src/conf/domain_conf.h | 2 ++ src/qemu/qemu_command.c | 8 ++++++++ .../qemuxml2argv-virtio-rng-random.args | 2 +- .../qemuxml2argv-virtio-rng-random.xml | 1 + 7 files changed, 64 insertions(+), 2 deletions(-)