[libvirt] [PATCH] qemu: Give hint about -noTSX CPU model

Jiri Denemark jdenemar at redhat.com
Thu Mar 26 08:43:55 UTC 2015


On Wed, Mar 25, 2015 at 10:37:46 -0600, Eric Blake wrote:
> 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.

Thanks, I pushed this and the previous patch.

Jirka




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