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Diffstat (limited to 'results/classifier/deepseek-2-tmp/output/manual-review/1224444')
| -rw-r--r-- | results/classifier/deepseek-2-tmp/output/manual-review/1224444 | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/results/classifier/deepseek-2-tmp/output/manual-review/1224444 b/results/classifier/deepseek-2-tmp/output/manual-review/1224444 deleted file mode 100644 index 59730b19..00000000 --- a/results/classifier/deepseek-2-tmp/output/manual-review/1224444 +++ /dev/null @@ -1,55 +0,0 @@ - -virtio-serial loses writes when used over virtio-mmio - -virtio-serial appears to lose writes, but only when used on top of virtio-mmio. The scenario is this: - -/home/rjones/d/qemu/arm-softmmu/qemu-system-arm \ - -global virtio-blk-device.scsi=off \ - -nodefconfig \ - -nodefaults \ - -nographic \ - -M vexpress-a15 \ - -machine accel=kvm:tcg \ - -m 500 \ - -no-reboot \ - -kernel /home/rjones/d/libguestfs/tmp/.guestfs-1001/kernel.27944 \ - -dtb /home/rjones/d/libguestfs/tmp/.guestfs-1001/dtb.27944 \ - -initrd /home/rjones/d/libguestfs/tmp/.guestfs-1001/initrd.27944 \ - -device virtio-scsi-device,id=scsi \ - -drive file=/home/rjones/d/libguestfs/tmp/libguestfsLa9dE2/scratch.1,cache=unsafe,format=raw,id=hd0,if=none \ - -device scsi-hd,drive=hd0 \ - -drive file=/home/rjones/d/libguestfs/tmp/.guestfs-1001/root.27944,snapshot=on,id=appliance,cache=unsafe,if=none \ - -device scsi-hd,drive=appliance \ - -device virtio-serial-device \ - -serial stdio \ - -chardev socket,path=/home/rjones/d/libguestfs/tmp/libguestfsLa9dE2/guestfsd.sock,id=channel0 \ - -device virtserialport,chardev=channel0,name=org.libguestfs.channel.0 \ - -append 'panic=1 mem=500M console=ttyAMA0 udevtimeout=600 no_timer_check acpi=off printk.time=1 cgroup_disable=memory root=/dev/sdb selinux=0 guestfs_verbose=1 TERM=xterm-256color' - -After the guest starts up, a daemon writes 4 bytes to a virtio-serial socket. The host side reads these 4 bytes correctly and writes a 64 byte message. The guest never sees this message. - -I enabled virtio-mmio debugging, and this is what is printed (## = my comment): - -## guest opens the socket: -trying to open virtio-serial channel '/dev/virtio-ports/org.libguestfs.channel.0' -virtio_mmio: virtio_mmio_write offset 0x50 value 0x3 -opened the socket, sock = 3 -udevadm settle -## guest writes 4 bytes to the socket: -virtio_mmio: virtio_mmio_write offset 0x50 value 0x5 -virtio_mmio: virtio_mmio setting IRQ 1 -virtio_mmio: virtio_mmio_read offset 0x60 -virtio_mmio: virtio_mmio_write offset 0x64 value 0x1 -virtio_mmio: virtio_mmio setting IRQ 0 -sent magic GUESTFS_LAUNCH_FLAG -## host reads 4 bytes successfully: -main_loop libguestfs: recv_from_daemon: received GUESTFS_LAUNCH_FLAG -libguestfs: [14605ms] appliance is up -Guest launched OK. -## host writes 64 bytes to socket: -libguestfs: writing the data to the socket (size = 64) -waiting for next request -libguestfs: data written OK -## hangs here forever with guest in read() call never receiving any data - -I am using qemu from git today (2d1fe1873a984). \ No newline at end of file |