[v3,23/37] Add iommufd configure option

This adds "--enable-iommufd/--disable-iommufd" to enable or disable
iommufd support, enabled by default.

Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
---
 meson.build                   | 6 ++++++
 meson_options.txt             | 2 ++
 scripts/meson-buildoptions.sh | 3 +++
 3 files changed, 11 insertions(+)

On 10/26/23 12:30, Zhenzhong Duan wrote:
> This adds "--enable-iommufd/--disable-iommufd" to enable or disable
> iommufd support, enabled by default.

It should be disabled by default for PPC.

Thanks,

C.


> 
> Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
> Signed-off-by: Cédric Le Goater <clg@redhat.com>
> ---
>   meson.build                   | 6 ++++++
>   meson_options.txt             | 2 ++
>   scripts/meson-buildoptions.sh | 3 +++
>   3 files changed, 11 insertions(+)
> 
> diff --git a/meson.build b/meson.build
> index 4961c82a6b..a8b0edf7b1 100644
> --- a/meson.build
> +++ b/meson.build
> @@ -560,6 +560,10 @@ have_tpm = get_option('tpm') \
>     .require(targetos != 'windows', error_message: 'TPM emulation only available on POSIX systems') \
>     .allowed()
>   
> +have_iommufd = get_option('iommufd') \
> +  .require(targetos == 'linux', error_message: 'iommufd is supported only on Linux') \
> +  .allowed()
> +
>   # vhost
>   have_vhost_user = get_option('vhost_user') \
>     .disable_auto_if(targetos != 'linux') \
> @@ -2133,6 +2137,7 @@ if get_option('tcg').allowed()
>   endif
>   config_host_data.set('CONFIG_TPM', have_tpm)
>   config_host_data.set('CONFIG_TSAN', get_option('tsan'))
> +config_host_data.set('CONFIG_IOMMUFD', have_iommufd)
>   config_host_data.set('CONFIG_USB_LIBUSB', libusb.found())
>   config_host_data.set('CONFIG_VDE', vde.found())
>   config_host_data.set('CONFIG_VHOST_NET', have_vhost_net)
> @@ -4074,6 +4079,7 @@ summary_info += {'vhost-user-crypto support': have_vhost_user_crypto}
>   summary_info += {'vhost-user-blk server support': have_vhost_user_blk_server}
>   summary_info += {'vhost-vdpa support': have_vhost_vdpa}
>   summary_info += {'build guest agent': have_ga}
> +summary_info += {'iommufd support': have_iommufd}
>   summary(summary_info, bool_yn: true, section: 'Configurable features')
>   
>   # Compilation information
> diff --git a/meson_options.txt b/meson_options.txt
> index 3c7398f3c6..91bb958cae 100644
> --- a/meson_options.txt
> +++ b/meson_options.txt
> @@ -109,6 +109,8 @@ option('dbus_display', type: 'feature', value: 'auto',
>          description: '-display dbus support')
>   option('tpm', type : 'feature', value : 'auto',
>          description: 'TPM support')
> +option('iommufd', type : 'feature', value : 'auto',
> +       description: 'iommufd support')
>   
>   # Do not enable it by default even for Mingw32, because it doesn't
>   # work on Wine.
> diff --git a/scripts/meson-buildoptions.sh b/scripts/meson-buildoptions.sh
> index 7ca4b77eae..1effc46f7d 100644
> --- a/scripts/meson-buildoptions.sh
> +++ b/scripts/meson-buildoptions.sh
> @@ -125,6 +125,7 @@ meson_options_help() {
>     printf "%s\n" '  guest-agent-msi Build MSI package for the QEMU Guest Agent'
>     printf "%s\n" '  hvf             HVF acceleration support'
>     printf "%s\n" '  iconv           Font glyph conversion support'
> +  printf "%s\n" '  iommufd         iommufd support'
>     printf "%s\n" '  jack            JACK sound support'
>     printf "%s\n" '  keyring         Linux keyring support'
>     printf "%s\n" '  kvm             KVM acceleration support'
> @@ -342,6 +343,8 @@ _meson_option_parse() {
>       --enable-install-blobs) printf "%s" -Dinstall_blobs=true ;;
>       --disable-install-blobs) printf "%s" -Dinstall_blobs=false ;;
>       --interp-prefix=*) quote_sh "-Dinterp_prefix=$2" ;;
> +    --enable-iommufd) printf "%s" -Diommufd=enabled ;;
> +    --disable-iommufd) printf "%s" -Diommufd=disabled ;;
>       --enable-jack) printf "%s" -Djack=enabled ;;
>       --disable-jack) printf "%s" -Djack=disabled ;;
>       --enable-keyring) printf "%s" -Dkeyring=enabled ;;

Hi All,

>-----Original Message-----
>From: Cédric Le Goater <clg@redhat.com>
>Sent: Tuesday, October 31, 2023 4:59 PM
>Subject: Re: [PATCH v3 23/37] Add iommufd configure option
>
>On 10/26/23 12:30, Zhenzhong Duan wrote:
>> This adds "--enable-iommufd/--disable-iommufd" to enable or disable
>> iommufd support, enabled by default.
>
>It should be disabled by default for PPC.

I didn't find how to disable iommufd for PPC after digging in https://www.qemu.org/docs/master/devel/kconfig.html

Appreciate any guide or help! Thanks in advance.

BRs.
Zhenzhong

On 10/31/23 11:52, Duan, Zhenzhong wrote:
> Hi All,
> 
>> -----Original Message-----
>> From: Cédric Le Goater <clg@redhat.com>
>> Sent: Tuesday, October 31, 2023 4:59 PM
>> Subject: Re: [PATCH v3 23/37] Add iommufd configure option
>>
>> On 10/26/23 12:30, Zhenzhong Duan wrote:
>>> This adds "--enable-iommufd/--disable-iommufd" to enable or disable
>>> iommufd support, enabled by default.
>>
>> It should be disabled by default for PPC.
> 
> I didn't find how to disable iommufd for PPC after digging in https://www.qemu.org/docs/master/devel/kconfig.html
> 
> Appreciate any guide or help! Thanks in advance.

I believe the config approach should be changed to use a Kconfig
entry instead.


Thanks,

C.



> 
> BRs.
> Zhenzhong