On Wed, Nov 6, 2019 at 11:30 AM Wayne Li <waynli...@gmail.com> wrote: > > Dear Yocto Developers, > > I'm trying to get KVM added and working on a Yocto kernel I built up for a > T4240 RDB (has a PowerPC CPU). KVM isn't working and the reason why it isn't > working seems to be I'm missing the necessary kernel modules. More > specifically, I don't seem to have a kvm.ko file that I can load. Here's how > I attempted to add KVM to the kernel. > > I went to the SDK install folder and ran ". fsl-setup-env -m t4240rdb-64b" > and then "bitbake virtual/kernel -c menuconfig". After the GUI comes up, I > went to Virtualization -> KVM support for PowerPC E500MC/E5500/E6500 > processors and hit "Save" to save the configuration. I then went and copied > the content of the .config file created by this into the kernel configuration > file specified by the following path; "build_t4240rdb-64b/virt1.config". > This path was specified by the variable KERNEL_DEFCONFIG in > sources/meta_freescale/conf/machine/t4240rdb-64b.conf. Here's what I > currently have in the kernel configuration file (i.e. the virt1.config file I > mentioned above): > > https://gist.github.com/WayneZhenLi/4172cd4a819b71a11b85fc5aaa57ebd1 > > After this, I built the kernel by running "bitbake -c compile -f > virtual/kernel" and rebuilt the full linux image. I re-added everything to > the SD card and booted up the T4240 RDB with the newly modified Yocto kernel. > At this point if I run lsmod, only the following two kernel modules show up: > > Module Size Used by > nfsd 100940 11 > exportfs 6723 1 nfsd > > But if I do a "find . -name "kvm"" I get the following: > > ./usr/src/kernel/Documentation/virtual/kvm > ./usr/src/kernel/arch/arm/kvm > ./usr/src/kernel/arch/arm64/kvm > ./usr/src/kernel/arch/mips/kvm > ./usr/src/kernel/arch/powerpc/kvm > ./usr/src/kernel/arch/s390/kvm > ./usr/src/kernel/arch/tile/kvm > ./usr/src/kernel/arch/x86/kvm > ./usr/src/kernel/drivers/s390/kvm > ./usr/src/kernel/include/config/kvm > ./usr/src/kernel/include/config/have/kvm > ./usr/src/kernel/include/kvm > ./usr/src/kernel/virt/kvm > ./dev/kvm > ./sys/devices/virtual/misc/kvm > ./sys/class/misc/kvm > ./sys/kernel/debug/kvm > ./sys/module/kvm > > So it does look like kvm-related files were added to the Yocto kernel because > of the changes I made to the kernel configuration file. But there is no > kvm.ko (or any .ko file related to kvm) anywhere in the file system.
Is the image you are building installing the specific kernel modules you need, or the generic meta package "kernel-modules" ? Without something like that, you can build the support, but the modules won't be present on the image. Bruce > > Is there something I'm doing wrong here? Am I missing important lines in my > kernel configuration file? Let me know your thoughts. > > -Thanks!, Wayne Li > -- > _______________________________________________ > yocto mailing list > yocto@yoctoproject.org > https://lists.yoctoproject.org/listinfo/yocto -- - Thou shalt not follow the NULL pointer, for chaos and madness await thee at its end - "Use the force Harry" - Gandalf, Star Trek II -- _______________________________________________ yocto mailing list yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/yocto
