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0dbb1e6e97
Passing accel=kvm:tcg causes it to try KVM first if available with a fallback to TCG (emulated/JIT mode) if it is not available. With this the boot logs gain: +Hypervisor detected: KVM and also -Booting paravirtualized kernel on bare hardware +Booting paravirtualized kernel on KVM Among various other noise. If I rename my host /dev/kvm then this is reversed, although with the following message: Could not access KVM kernel module: No such file or directory failed to initialize KVM: No such file or directory Back to tcg accelerator. Q35 is a more modern emulated platform based on the ICH9 host chipset rather than the default "pc" I440FX (Pentium Pro / Pentium II era) emulation. See http://wiki.qemu-project.org/Features/Q35 for more info. Switching to Q35 is not a requirement for enabling KVM but seemed like a reasonable change. Signed-off-by: Ian Campbell <ian.campbell@docker.com>
48 lines
1.1 KiB
Bash
Executable File
48 lines
1.1 KiB
Bash
Executable File
#!/bin/sh
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set -e
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cd /tmp
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# extract. BSD tar auto recognises compression, unlike GNU tar
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# only if stdin is a tty, if so need files volume mounted...
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[ -t 0 ] || bsdtar xzf -
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TGZ="$(find . -name '*.tgz' -or -name '*.tar.gz')"
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[ -n "$TGZ" ] && bsdtar xzf "$TGZ"
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ISO="$(find . -name '*.iso')"
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RAW="$(find . -name '*.raw')"
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INITRD="$(find . -name '*.img')"
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KERNEL="$(find . -name vmlinuz64 -or -name '*bzImage')"
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if [ -n "$ISO" ]
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then
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ARGS="-cdrom $ISO -drive file=systemdisk.img,format=raw"
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elif [ -n "$RAW" ]
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then
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# should test with more drives
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ARGS="-drive file=$RAW,format=raw"
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elif [ -n "KERNEL" ]
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then
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ARGS="-kernel $KERNEL"
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if [ -n "$INITRD" ]
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then
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ARGS="$ARGS -initrd $INITRD"
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fi
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ARGS="$ARGS -drive file=systemdisk.img,format=raw"
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else
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echo "no recognised boot media" >2
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exit 1
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fi
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echo "$ARGS" | grep -q systemdisk && qemu-img create -f raw systemdisk.img 256M
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CMDLINE="$*"
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if [ -z "${CMDLINE}" ]
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then
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CMDLINE="console=ttyS0"
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fi
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qemu-system-x86_64 -machine q35,accel=kvm:tcg -device virtio-rng-pci -serial stdio -vnc none -m 1024 -append "${CMDLINE}" $ARGS
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