Re: [RFC PATCH-for-9.1? 2/2] hw/intc/arm_gic: Only provide query-gic-capabilities when GIC built-in

[Markus Armbruster <armbru@redhat.com>]

Philippe Mathieu-Daudé <philmd@linaro.org> writes:

> When configuring QEMU with --without-default-devices and
> not including machines using a GIC, the GIC model is not
> built in but the 'query-gic-capabilities' command still
> returns false hopes about GIC:
>
>   {"execute": "query-gic-capabilities"}
>   {"return": [{"emulated": true, "version": 3, "kernel": false}, {"emulated": true, "version": 2, "kernel": false}]}
>
> Restrict the command to when the GIC is available. If it
> isn't we'll get:
>
>   { "execute": "query-gic-capabilities" }
>   {"error": {"class": "CommandNotFound", "desc": "The command query-gic-capabilities has not been found"}}
>
> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2484
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> ---
>  qapi/misc-target.json | 4 ++--
>  hw/intc/arm_gic_qmp.c | 2 ++
>  hw/intc/meson.build   | 2 +-
>  3 files changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/qapi/misc-target.json b/qapi/misc-target.json
> index 8d70bd24d8..b857e44c2e 100644
> --- a/qapi/misc-target.json
> +++ b/qapi/misc-target.json
> @@ -316,7 +316,7 @@
>    'data': { 'version': 'int',
>              'emulated': 'bool',
>              'kernel': 'bool' },
> -  'if': 'TARGET_ARM' }
> +  'if': 'CONFIG_ARM_GIC' }
>  
>  ##
>  # @query-gic-capabilities:
> @@ -335,7 +335,7 @@
>  #                     { "version": 3, "emulated": false, "kernel": true } ] }
>  ##
>  { 'command': 'query-gic-capabilities', 'returns': ['GICCapability'],
> -  'if': 'TARGET_ARM' }
> +  'if': 'CONFIG_ARM_GIC' }
>  
>  ##
>  # @SGXEPCSection:
> diff --git a/hw/intc/arm_gic_qmp.c b/hw/intc/arm_gic_qmp.c
> index 71056a0c10..1fc79c775b 100644
> --- a/hw/intc/arm_gic_qmp.c
> +++ b/hw/intc/arm_gic_qmp.c
> @@ -6,6 +6,8 @@
>  
>  #include "qemu/osdep.h"
>  #include "qapi/util.h"
> +
> +#include CONFIG_DEVICES

Uh, why do we need this now?

>  #include "qapi/qapi-commands-misc-target.h"
>  #include "kvm_arm.h"
>  
> diff --git a/hw/intc/meson.build b/hw/intc/meson.build
> index 45d3503d49..b9550967e2 100644
> --- a/hw/intc/meson.build
> +++ b/hw/intc/meson.build
> @@ -39,7 +39,7 @@ if config_all_devices.has_key('CONFIG_APIC') or \
>  endif
>  
>  specific_ss.add(when: 'CONFIG_APIC', if_true: files('apic.c', 'apic_common.c'))
> -specific_ss.add(when: 'CONFIG_ARM', if_true: files('arm_gic_qmp.c'))
> +specific_ss.add(when: 'CONFIG_ARM_GIC', if_true: files('arm_gic_qmp.c'))
>  specific_ss.add(when: 'CONFIG_ARM_GIC', if_true: files('arm_gicv3_cpuif_common.c'))
>  specific_ss.add(when: 'CONFIG_ARM_GICV3_TCG', if_true: files('arm_gicv3_cpuif.c'))
>  specific_ss.add(when: 'CONFIG_ARM_GIC_KVM', if_true: files('arm_gic_kvm.c'))