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Re: [libvirt] [PATCHv2 4/6] qemu: Add support for "none" USB controller



On Thu, Jul 12, 2012 at 11:30:58AM +0200, Peter Krempa wrote:
> This patch enables the "none" USB controller for qemu guests and adds
> valdiation on hot-plugged devices if the guest has USB disabled.
> ---
>  src/qemu/qemu_command.c |    7 +++++++
>  src/qemu/qemu_driver.c  |    6 ++++++
>  2 files changed, 13 insertions(+), 0 deletions(-)
> 
> diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
> index d202425..d828abc 100644
> --- a/src/qemu/qemu_command.c
> +++ b/src/qemu/qemu_command.c
> @@ -4786,6 +4786,13 @@ qemuBuildCommandLine(virConnectPtr conn,
>                  cont->type == VIR_DOMAIN_CONTROLLER_TYPE_FDC)
>                  continue;
> 
> +             /* Also, skip USB controllers with type none.*/
> +            if (cont->type == VIR_DOMAIN_CONTROLLER_TYPE_USB &&
> +                cont->model == VIR_DOMAIN_CONTROLLER_MODEL_USB_NONE) {
> +                usbcontroller = -1; /* mark we don't want a controller */
> +                continue;
> +            }
> +
>              /* Only recent QEMU implements a SATA (AHCI) controller */
>              if (cont->type == VIR_DOMAIN_CONTROLLER_TYPE_SATA) {
>                  if (!qemuCapsGet(qemuCaps, QEMU_CAPS_ICH9_AHCI)) {
> diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
> index 5e831b7..96b58a0 100644
> --- a/src/qemu/qemu_driver.c
> +++ b/src/qemu/qemu_driver.c
> @@ -5827,6 +5827,9 @@ qemuDomainModifyDeviceFlags(virDomainPtr dom, const char *xml,
>      }
> 
>      if (flags & VIR_DOMAIN_AFFECT_CONFIG) {
> +        if (virDomainDefCompatibleDevice(vmdef, dev) < 0)
> +            goto endjob;
> +
>          /* Make a copy for updated domain. */
>          vmdef = virDomainObjCopyPersistentDef(driver->caps, vm);
>          if (!vmdef)
> @@ -5852,6 +5855,9 @@ qemuDomainModifyDeviceFlags(virDomainPtr dom, const char *xml,
>      }
> 
>      if (flags & VIR_DOMAIN_AFFECT_LIVE) {
> +        if (virDomainDefCompatibleDevice(vm->def, dev_copy) < 0)
> +            goto endjob;
> +
>          switch (action) {
>          case QEMU_DEVICE_ATTACH:
>              ret = qemuDomainAttachDeviceLive(vm, dev_copy, dom);

ACK


Daniel
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