Re: [Qemu-devel] [PULL 08/19] hw/i386: turn off vmport if CONFIG_VMPORT is disabled

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

Hi,

On 7/16/19 10:11 AM, Paolo Bonzini wrote:
> From: Julio Montes <julio.montes@intel.com>
> 
> vmport device is not included when CONFIG_VMPORT is disabled, hence
> QEMU fails with the following error:
> 
> `Unknown device 'vmport' for bus 'ISA': unknown.`
> 
> v2: imply VMPORT (Paolo Bonzini )
> 
> Signed-off-by: Julio Montes <julio.montes@intel.com>
> Message-Id: <20190712160257.18270-1-julio.montes@intel.com>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
>  hw/i386/Kconfig | 4 ++--
>  hw/i386/pc.c    | 5 +++++
>  2 files changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/hw/i386/Kconfig b/hw/i386/Kconfig
> index 4ddf2a9..b9c96ac 100644
> --- a/hw/i386/Kconfig
> +++ b/hw/i386/Kconfig
> @@ -51,6 +51,7 @@ config PC_ACPI
>  config I440FX
>      bool
>      imply E1000_PCI
> +    imply VMPORT
>      select PC_PCI
>      select PC_ACPI
>      select ACPI_SMBUS
> @@ -58,7 +59,6 @@ config I440FX
>      select IDE_PIIX
>      select DIMM
>      select SMBIOS
> -    select VMPORT
>      select VMMOUSE
>      select FW_CFG_DMA
>  
> @@ -77,6 +77,7 @@ config Q35
>      imply VTD
>      imply AMD_IOMMU
>      imply E1000E_PCI_EXPRESS
> +    imply VMPORT
>      select PC_PCI
>      select PC_ACPI
>      select PCI_EXPRESS_Q35
> @@ -84,7 +85,6 @@ config Q35
>      select AHCI_ICH9
>      select DIMM
>      select SMBIOS
> -    select VMPORT
>      select VMMOUSE
>      select FW_CFG_DMA
>  
> diff --git a/hw/i386/pc.c b/hw/i386/pc.c
> index c33ce47..549c437 100644
> --- a/hw/i386/pc.c
> +++ b/hw/i386/pc.c
> @@ -83,6 +83,7 @@
>  #include "hw/mem/memory-device.h"
>  #include "sysemu/replay.h"
>  #include "qapi/qmp/qerror.h"
> +#include "config-devices.h"
>  
>  /* debug PC/ISA interrupts */
>  //#define DEBUG_IRQ
> @@ -2793,7 +2794,11 @@ static void pc_machine_initfn(Object *obj)
>  
>      pcms->max_ram_below_4g = 0; /* use default */
>      pcms->smm = ON_OFF_AUTO_AUTO;
> +#ifdef CONFIG_VMPORT
>      pcms->vmport = ON_OFF_AUTO_AUTO;
> +#else
> +    pcms->vmport = ON_OFF_AUTO_OFF;
> +#endif /* CONFIG_VMPORT */
>      /* acpi build is enabled by default if machine supports it */
>      pcms->acpi_build_enabled = PC_MACHINE_GET_CLASS(pcms)->has_acpi_build;
>      pcms->smbus_enabled = true;
> 

Testing v4.1.0-rc1, this commit breaks ./configure
--without-default-devices:

  GEN     i386-softmmu/config-devices.mak.tmp
    select VMMOUSE if I440FX
    select VMMOUSE if Q35
    config VMMOUSE depends on VMPORT
Traceback (most recent call last):
  File "scripts/minikconf.py", line 703, in <module>
    config = data.compute_config()
  File "scripts/minikconf.py", line 253, in compute_config
    clause.process()
  File "scripts/minikconf.py", line 188, in process
    self.dest.set_value(False, self)
  File "scripts/minikconf.py", line 118, in set_value
    raise KconfigDataError('contradiction between clauses when setting
%s' % self)
__main__.KconfigDataError: contradiction between clauses when setting
VMMOUSE

97fd1ea8c1065839ae4c19bfdc3590033a5b9788 is the first bad commit
commit 97fd1ea8c1065839ae4c19bfdc3590033a5b9788
Author: Julio Montes <julio.montes@intel.com>
Date:   Fri Jul 12 16:02:57 2019 +0000

    hw/i386: turn off vmport if CONFIG_VMPORT is disabled

    vmport device is not included when CONFIG_VMPORT is disabled, hence
    QEMU fails with the following error:

    `Unknown device 'vmport' for bus 'ISA': unknown.`

    v2: imply VMPORT (Paolo Bonzini )

    Signed-off-by: Julio Montes <julio.montes@intel.com>
    Message-Id: <20190712160257.18270-1-julio.montes@intel.com>
    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>