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[78.27.71.225]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2b4782ab8cdsm51129375ad.64.2026.04.16.06.26.12 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Apr 2026 06:26:13 -0700 (PDT) Date: Thu, 16 Apr 2026 16:26:09 +0300 From: Mikko Rapeli To: poky@lists.yoctoproject.org Subject: Re: [poky] [PATCH v3] genericarm64 core-image-initramfs-boot: remove some kernel drivers Message-ID: References: <18A5D9F18A3D8C50.777565@lists.yoctoproject.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <18A5D9F18A3D8C50.777565@lists.yoctoproject.org> List-Id: X-Webhook-Received: from 45-33-107-173.ip.linodeusercontent.com [45.33.107.173] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Thu, 16 Apr 2026 13:26:24 -0000 X-Groupsio-URL: https://lists.yoctoproject.org/g/poky/message/13903 Hi, On Mon, Apr 13, 2026 at 10:27:15AM +0300, Mikko Rapeli via lists.yoctoproject.org wrote: > genericarm64 supports a lot of HW and thus large collection of kernel > drivers are enabled and installed to images by default. > Subset of the kernel drivers are needed in initramfs to mount rootfs > from local mass storage devices. This increases initramfs size a lot > and with new kernel config updates even more. Thus remove kernel > drivers from initramfs image which are not needed for mounting > rootfs from local mass storage devices. GPU, Bluetooth, NFC, > sound, networking etc support is not needed in the initramfs. > > According to buildhistory core-image-initramfs-boot size is reduced > from 118 to 83 Mb. In my oe-core master branch builds core-image-initramfs-boot is now failing due to size limits: https://gitlab.com/Linaro/trustedsubstrate/gpit/-/jobs/13951723488 2026-04-16 13:04:26 - ERROR - ERROR: core-image-initramfs-boot-1.0-r0 do_image_cpio: The initramfs size 282121(K) exceeds INITRAMFS_MAXSIZE: 280000(K) 2026-04-16 13:04:26 - ERROR - ERROR: core-image-initramfs-boot-1.0-r0 do_image_cpio: You can set INITRAMFS_MAXSIZE a larger value. Usually, it should 2026-04-16 13:04:26 - ERROR - ERROR: core-image-initramfs-boot-1.0-r0 do_image_cpio: be less than 1/2 of ram size, or you may fail to boot it. This patch could be one fix. But is this visible in auto-builder side builds? Or have the genericarm64 poky-altcfg distro builds been disabled? Cheers, -Mikko > Signed-off-by: Mikko Rapeli > --- > .../images/core-image-initramfs-boot.bbappend | 28 +++++++++++++++++++ > 1 file changed, 28 insertions(+) > create mode 100644 meta-yocto-bsp/recipes-core/images/core-image-initramfs-boot.bbappend > > v3: added PATHS_TO_REMOVE variable so that it can be customized > as suggested by Jose Quaresma > > v2: https://lists.yoctoproject.org/g/poky/message/13894 > > diff --git a/meta-yocto-bsp/recipes-core/images/core-image-initramfs-boot.bbappend b/meta-yocto-bsp/recipes-core/images/core-image-initramfs-boot.bbappend > new file mode 100644 > index 000000000000..2298c2f94740 > --- /dev/null > +++ b/meta-yocto-bsp/recipes-core/images/core-image-initramfs-boot.bbappend > @@ -0,0 +1,28 @@ > +POSTFUNCS = "" > +POSTFUNCS:genericarm64 = "reduce_initrd_size" > + > +PATHS_TO_REMOVE = "" > +# these kernel modules are not needed for rootfs mount from local mass storage > +# and can be loaded from main rootfs by udev > +PATHS_TO_REMOVE:genericarm64 = "\ > + ${WORKDIR}/rootfs/${libdir}/modules/*/kernel/drivers/bluetooth \ > + ${WORKDIR}/rootfs/${libdir}/modules/*/kernel/drivers/gpu \ > + ${WORKDIR}/rootfs/${libdir}/modules/*/kernel/drivers/media \ > + ${WORKDIR}/rootfs/${libdir}/modules/*/kernel/drivers/net \ > + ${WORKDIR}/rootfs/${libdir}/modules/*/kernel/drivers/nfc \ > + ${WORKDIR}/rootfs/${libdir}/modules/*/kernel/drivers/usb/gadget \ > + ${WORKDIR}/rootfs/${libdir}/modules/*/kernel/fs/fuse \ > + ${WORKDIR}/rootfs/${libdir}/modules/*/kernel/net/bluetooth \ > + ${WORKDIR}/rootfs/${libdir}/modules/*/kernel/net/bridge \ > + ${WORKDIR}/rootfs/${libdir}/modules/*/kernel/net/netfilter \ > + ${WORKDIR}/rootfs/${libdir}/modules/*/kernel/net/nfc \ > + ${WORKDIR}/rootfs/${libdir}/modules/*/kernel/sound \ > +" > + > +do_rootfs[postfuncs] += "${POSTFUNCS}" > +reduce_initrd_size () { > + if [ -n "${PATHS_TO_REMOVE}" ]; then > + rm -rf ${PATHS_TO_REMOVE} > + fi > +} > + > -- > 2.34.1 > > > -=-=-=-=-=-=-=-=-=-=-=- > Links: You receive all messages sent to this group. > View/Reply Online (#13898): https://lists.yoctoproject.org/g/poky/message/13898 > Mute This Topic: https://lists.yoctoproject.org/mt/118800931/7159507 > Group Owner: poky+owner@lists.yoctoproject.org > Unsubscribe: https://lists.yoctoproject.org/g/poky/unsub [mikko.rapeli@linaro.org] > -=-=-=-=-=-=-=-=-=-=-=- >