On Fri, Jul 10, 2026 at 10:23 PM Subrahmanya Lingappa
<[email protected]> wrote:
>
> From: Subrahmanya Lingappa <[email protected]>
>
> Add a meson option and config probe for librpmi so RISC-V machines can
> opt into RPMI support when the library is available. Keep the dependency
> optional so default builds without librpmi continue to work.
>
> Signed-off-by: Subrahmanya Lingappa <[email protected]>
Can we add some documentation of how get librpmi support to work? Do I
just apt/dnf/pacman/apk install it? Do I need a certain version?
Alistair
> ---
> Kconfig.host | 3 +++
> meson.build | 14 ++++++++++++++
> meson_options.txt | 2 ++
> scripts/meson-buildoptions.sh | 3 +++
> 4 files changed, 22 insertions(+)
>
> diff --git a/Kconfig.host b/Kconfig.host
> index 933425c74b..6f98dadb2e 100644
> --- a/Kconfig.host
> +++ b/Kconfig.host
> @@ -8,6 +8,9 @@ config LINUX
> config LIBCBOR
> bool
>
> +config LIBRPMI
> + bool
> +
> config GNUTLS
> bool
>
> diff --git a/meson.build b/meson.build
> index 19e123423b..103b4649b8 100644
> --- a/meson.build
> +++ b/meson.build
> @@ -2005,6 +2005,17 @@ if lzo.found() and not cc.links('''
> endif
> endif
>
> +librpmi = not_found
> +if not get_option('librpmi').auto() or have_system
> + librpmi = dependency('librpmi', required: get_option('librpmi'),
> + method: 'pkg-config')
> + if librpmi.found() and not cc.has_header_symbol('librpmi.h',
> +
> 'rpmi_service_group_logging_create',
> + dependencies: librpmi)
> + error('librpmi support requires the RPMI logging service group API')
> + endif
> +endif
> +
> numa = not_found
> if not get_option('numa').auto() or have_system or have_tools
> numa = cc.find_library('numa', has_headers: ['numa.h'],
> @@ -2427,6 +2438,7 @@ config_host_data.set('CONFIG_LINUX', host_os == 'linux')
> config_host_data.set('CONFIG_POSIX', host_os != 'windows')
> config_host_data.set('CONFIG_WIN32', host_os == 'windows')
> config_host_data.set('CONFIG_LZO', lzo.found())
> +config_host_data.set('CONFIG_LIBRPMI', librpmi.found())
> config_host_data.set('CONFIG_MPATH', mpathpersist.found())
> config_host_data.set('CONFIG_BLKIO', blkio.found())
> if blkio.found()
> @@ -3258,6 +3270,7 @@ host_kconfig = \
> (multiprocess_allowed ? ['CONFIG_MULTIPROCESS_ALLOWED=y'] : []) + \
> (vfio_user_server_allowed ? ['CONFIG_VFIO_USER_SERVER_ALLOWED=y'] : []) + \
> (hv_balloon ? ['CONFIG_HV_BALLOON_POSSIBLE=y'] : []) + \
> + (librpmi.found() ? ['CONFIG_LIBRPMI=y'] : []) + \
> (have_rust ? ['CONFIG_HAVE_RUST=y'] : [])
>
> ignored = [ 'TARGET_XML_FILES', 'TARGET_ABI_DIR' ]
> @@ -4971,6 +4984,7 @@ summary_info += {'TPM support': have_tpm}
> summary_info += {'IGVM support': igvm}
> summary_info += {'libssh support': libssh}
> summary_info += {'lzo support': lzo}
> +summary_info += {'librpmi support': librpmi}
> summary_info += {'snappy support': snappy}
> summary_info += {'bzip2 support': libbzip2}
> summary_info += {'lzfse support': liblzfse}
> diff --git a/meson_options.txt b/meson_options.txt
> index a07cb47d35..9f773a7886 100644
> --- a/meson_options.txt
> +++ b/meson_options.txt
> @@ -204,6 +204,8 @@ option('lzfse', type : 'feature', value : 'auto',
> description: 'lzfse support for DMG images')
> option('lzo', type : 'feature', value : 'auto',
> description: 'lzo compression support')
> +option('librpmi', type : 'feature', value : 'auto',
> + description: 'RISC-V RPMI support')
> option('pvg', type: 'feature', value: 'auto',
> description: 'macOS paravirtualized graphics support')
> option('rbd', type : 'feature', value : 'auto',
> diff --git a/scripts/meson-buildoptions.sh b/scripts/meson-buildoptions.sh
> index c003985047..e8a20068e7 100644
> --- a/scripts/meson-buildoptions.sh
> +++ b/scripts/meson-buildoptions.sh
> @@ -140,6 +140,7 @@ meson_options_help() {
> printf "%s\n" ' libkeyutils Linux keyutils support'
> printf "%s\n" ' libnfs libnfs block device driver'
> printf "%s\n" ' libpmem libpmem support'
> + printf "%s\n" ' librpmi RISC-V RPMI support'
> printf "%s\n" ' libssh ssh block device support'
> printf "%s\n" ' libudev Use libudev to enumerate host devices'
> printf "%s\n" ' libusb libusb support for USB passthrough'
> @@ -376,6 +377,8 @@ _meson_option_parse() {
> --disable-libnfs) printf "%s" -Dlibnfs=disabled ;;
> --enable-libpmem) printf "%s" -Dlibpmem=enabled ;;
> --disable-libpmem) printf "%s" -Dlibpmem=disabled ;;
> + --enable-librpmi) printf "%s" -Dlibrpmi=enabled ;;
> + --disable-librpmi) printf "%s" -Dlibrpmi=disabled ;;
> --enable-libssh) printf "%s" -Dlibssh=enabled ;;
> --disable-libssh) printf "%s" -Dlibssh=disabled ;;
> --enable-libudev) printf "%s" -Dlibudev=enabled ;;
> --
> 2.43.0
>
>
