[libvirt] [PATCH] qemu: Give hint about -noTSX CPU model
Eric Blake
eblake at redhat.com
Wed Mar 25 16:37:46 UTC 2015
On 03/24/2015 07:20 AM, Jiri Denemark wrote:
> Because of the microcode update to Haswell/Broadwell CPUs, existing
> domains using these CPUs may fail to start even though they used to run
> just fine. To help users solve this issue we try to suggest switching to
> -noTSX variant of the CPU model:
>
> virsh # start cd
> error: Failed to start domain cd
> error: unsupported configuration: guest and host CPU are not
> compatible: Host CPU does not provide required features: rtm, hle;
> try using 'Haswell-noTSX' CPU model
Definitely worth this hint, as a lot of people are being bitten by it
according to bugzilla traffic.
>
> Signed-off-by: Jiri Denemark <jdenemar at redhat.com>
> ---
>
> This patch depends on the previous patch which introduces the new
> *-noTSX models.
>
> src/qemu/qemu_command.c | 38 +++++++++++++++++++++++++++++++++-----
> 1 file changed, 33 insertions(+), 5 deletions(-)
ACK.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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