Messages in this thread | | | Subject | PAE + virtio = probe error? | From | Xi Ruoyao <> | Date | Thu, 09 Mar 2023 22:50:21 +0800 |
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Hello,
I'm using a QEMU VM for testing things on 32-bit x86. Today I updated the VM to use Linux kernel 6.2.2, and a strange issue happened: both virtio block driver and virtio network driver fail to probe with errors like:
[ 0.950474] virtio_blk virtio1: virtio: device uses modern interface but does not have VIRTIO_F_VERSION_1 [ 0.951669] virtio_blk: probe of virtio1 failed with error -22
I spent some time debugging the issue, and it turned out if I disable CONFIG_X86_PAE, the virtio drivers would function normally. But then I can only use 4GB RAM in the VM.
Is this a bug or I'm doing something wrong? The command to start the VM is:
qemu -enable-kvm \ -smp 8 \ -cpu host \ -m 16G \ -drive file=disk.img,if=virtio \ -boot menu=on \ -net nic,netdev=net0,model=virtio-net-pci \ -netdev user,id=net0 \ -device ac97 \ -vga std \ -serial mon:stdio \ -name "32_bit_x86" \ -pflash /usr/share/qemu/edk2-x86_64-code.fd
-- Xi Ruoyao <xry111@xry111.site> School of Aerospace Science and Technology, Xidian University
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