66 lines
1.3 KiB
Bash
66 lines
1.3 KiB
Bash
#!/usr/bin/env bash
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set -Eeuo pipefail
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# Docker environment variables
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: "${KVM:="Y"}"
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: "${CPU_FLAGS:=""}"
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: "${CPU_MODEL:="host"}"
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[[ "$ARCH" != "arm"* ]] && KVM="N"
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if [[ "$KVM" != [Nn]* ]]; then
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KVM_ERR=""
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if [ ! -e /dev/kvm ]; then
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KVM_ERR="(device file missing)"
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else
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if ! sh -c 'echo -n > /dev/kvm' &> /dev/null; then
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KVM_ERR="(no write access)"
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fi
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fi
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if [ -n "$KVM_ERR" ]; then
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KVM="N"
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error "KVM acceleration not detected $KVM_ERR, this will cause a major loss of performance."
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error "See the FAQ on how to enable it, or continue without KVM by setting KVM=N (not recommended)."
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[[ "$DEBUG" != [Yy1]* ]] && exit 88
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fi
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fi
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if [[ "$KVM" != [Nn]* ]]; then
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CPU_FEATURES="kvm=on"
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KVM_OPTS=",accel=kvm,virtualization=true -enable-kvm"
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if [[ "${BOOT_MODE,,}" == "windows" ]] || [[ "${BOOT_MODE,,}" == "windows_legacy" ]]; then
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CPU_FEATURES="kvm=on,+hypervisor,+invtsc,l3-cache=on,migratable=no,hv_passthrough"
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fi
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else
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KVM_OPTS=""
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CPU_FEATURES=""
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if [[ "${CPU_MODEL,,}" == "host"* ]]; then
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if [[ "$ARCH" == "arm"* ]]; then
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CPU_MODEL="max"
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else
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CPU_MODEL="cortex-a76"
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fi
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fi
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fi
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if [ -z "$CPU_FLAGS" ]; then
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CPU_FLAGS="$CPU_MODEL,$CPU_FEATURES"
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else
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CPU_FLAGS="$CPU_MODEL,$CPU_FEATURES,$CPU_FLAGS"
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fi
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return 0
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