[libvirt] [PATCH] Only probe for CPU models if required
Daniel P. Berrange
berrange at redhat.com
Mon Dec 21 19:12:31 UTC 2009
On Mon, Dec 21, 2009 at 05:44:50PM +0100, Jiri Denemark wrote:
> CPU models where probe everytime a qemu command line was built. But it
> only makes sense to do so when a guest's XML contains CPU model.
>
> Signed-off-by: Jiri Denemark <jdenemar at redhat.com>
> ---
> src/qemu/qemu_conf.c | 7 ++++---
> 1 files changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c
> index 36bf9a2..3f6c79b 100644
> --- a/src/qemu/qemu_conf.c
> +++ b/src/qemu/qemu_conf.c
> @@ -1778,17 +1778,18 @@ qemudBuildCommandLineCPU(virConnectPtr conn,
> {
> const virCPUDefPtr host = driver->caps->host.cpu;
> virCPUDefPtr guest = NULL;
> - unsigned int ncpus;
> + unsigned int ncpus = 0;
> const char **cpus = NULL;
> union cpuData *data = NULL;
> int ret = -1;
> virBuffer buf = VIR_BUFFER_INITIALIZER;
> int i;
>
> - if (qemudProbeCPUModels(emulator, ut->machine, &ncpus, &cpus) < 0)
> + if (def->cpu && def->cpu->model
> + && qemudProbeCPUModels(emulator, ut->machine, &ncpus, &cpus) < 0)
> goto cleanup;
>
> - if (ncpus > 0 && host && def->cpu && def->cpu->model) {
> + if (ncpus > 0 && host) {
> virCPUCompareResult cmp;
>
> cmp = cpuGuestData(conn, host, def->cpu, &data);
ACK, this should fix the test suite failures seen where it tries to
run a QEMU binary when generating ARGV. Eventually we should move
the probe call init the code which generates the capabilities data
and keep the list of CPUs permanently.
Daniel
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