diff options
Diffstat (limited to 'README.md')
| -rw-r--r-- | README.md | 13 |
1 files changed, 7 insertions, 6 deletions
@@ -179,12 +179,13 @@ to build the `gpio-pci-idio-16` kernel module yourself - it's part of the standard Linux kernel, but not usually built and shipped on x86. Start your guest VM: - ./x86_64-softmmu/qemu-system-x86_64 -mem-prealloc -m 1024 \ - -object memory-backend-file,id=ram-node0,prealloc=yes,mem-path=mem,share=yes,size=1073741824 \ - -kernel ~/vmlinuz -initrd ~/initrd -nographic \ - -append "console=ttyS0 root=/dev/sda1 single" \ - -hda ~/bionic-server-cloudimg-amd64-0.raw \ - -device vfio-user-pci,socket=/tmp/vfio-user.sock + ./x86_64-softmmu/qemu-system-x86_64 -mem-prealloc -m 256 \ + -object memory-backend-file,id=ram-node0,prealloc=yes,mem-path=/dev/hugepages/gpio,share=yes,size=256M \ + -numa node,memdev=ram-node0 \ + -kernel ~/vmlinuz -initrd ~/initrd -nographic \ + -append "console=ttyS0 root=/dev/sda1 single" \ + -hda ~/bionic-server-cloudimg-amd64-0.raw \ + -device vfio-user-pci,socket=/tmp/vfio-user.sock Log in to your guest VM, and you should be able to load the module and observe the emulated GPIO device's pins: |