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

Re: [libvirt] [PATCH] docs: formatdomain: explain host-model/host-passthrough requirements



On Fri, 2019-08-02 at 14:54 +0200, Paolo Bonzini wrote:
> host-passthrough documentation menions that the source and 

Small nit: menions -> mentions

> destination
> hosts are not identical in both hardware and
> configuration.  Configuration
> actually includes microcode version and QEMU version, but this is not
> clear so make it explicit
> 
> Signed-off-by: Paolo Bonzini <pbonzini redhat com>
> ---
>  docs/formatdomain.html.in | 12 ++++++------
>  1 file changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
> index f5c882141a..6d084d7c04 100644
> --- a/docs/formatdomain.html.in
> +++ b/docs/formatdomain.html.in
> @@ -1590,8 +1590,8 @@
>            hand, the ABI provided to the guest is reproducible.
> During
>            migration, complete CPU model definition is transferred to
> the
>            destination host so the migrated guest will see exactly
> the same CPU
> -          model even if the destination host contains more capable
> CPUs for
> -          the running instance of the guest; but shutting down and
> restarting
> +          model for the running instance of the guest, even if the
> destination
> +          host contains more capable CPUs or newer kernel; but
> shutting down and restarting
>            the guest may present different hardware to the guest
> according to
>            the capabilities of the new host. Prior to libvirt 3.2.0
> and QEMU
>            2.9.0 detection of the host CPU model via QEMU is not
> supported.
> @@ -1625,10 +1625,10 @@
>            environment cannot be reproduced on different hardware.
> Thus, if you
>            hit any bugs, you are on your own. Further details of that
> CPU can
>            be changed using <code>feature</code> elements. Migration
> of a guest
> -          using host-passthrough is dangerous if the source and
> destination
> -          hosts are not identical in both hardware and
> configuration. If such
> -          a migration is attempted then the guest may hang or crash
> upon
> -          resuming execution on the destination host.</dd>
> +          using host-passthrough is dangerous if the source and
> destination hosts
> +          are not identical in both hardware, QEMU version,
> microcode version
> +          and configuration. If such a migration is attempted then
> the guest may
> +          hang or crash upon resuming execution on the destination
> host.</dd>
>          </dl>
>  
>          Both <code>host-model</code> and <code>host-
> passthrough</code> modes


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