mirror of
https://gitee.com/gfdgd-xi/deep-wine-runner
synced 2025-11-04 07:22:23 +08:00
133 lines
3.6 KiB
Bash
Executable File
133 lines
3.6 KiB
Bash
Executable File
#!/bin/sh
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#
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# kvm-ok - check whether the CPU we're running on supports KVM acceleration
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# Copyright (C) 2008-2010 Canonical Ltd.
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#
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# Authors:
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# Dustin Kirkland <kirkland@canonical.com>
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# Kees Cook <kees.cook@canonical.com>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 3,
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# as published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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set -e
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assert_root() {
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if [ "$(id -u)" != "0" ]; then
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echo "INFO: For more detailed results, you should run this as root"
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echo "HINT: sudo $0"
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exit 1
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fi
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}
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verdict() {
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# Print verdict
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if [ "$1" = "0" ]; then
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echo "KVM acceleration can be used"
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exit 0
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else
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echo "KVM acceleration can NOT be used"
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exit 1
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fi
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}
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ARM_CPU_PART_CORTEX_A15="0xc0f" # <asm/cputype.h>
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# check cpu flags for capability
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case "$(uname -m)" in
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armv7l)
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if egrep -m1 -w '^CPU part[[:blank:]]*:' /proc/cpuinfo | \
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egrep -wq "$ARM_CPU_PART_CORTEX_A15"; then
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virt="ARM"
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kvm_mod="kvm"
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fi
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;;
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aarch64)
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virt="ARM"
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kvm_mod="kvm"
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;;
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ppc64le|ppc64|s390x)
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# FIXME: Assume that all POWER and z/Systems are KVM capable
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virt="generic"
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kvm_mod="kvm"
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;;
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*)
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virt=$(egrep -m1 -w '^flags[[:blank:]]*:' /proc/cpuinfo | egrep -wo '(vmx|svm)') || true
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[ "$virt" = "vmx" ] && kvm_mod="kvm_intel"
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[ "$virt" = "svm" ] && kvm_mod="kvm_amd"
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;;
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esac
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if [ -z "$virt" ]; then
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echo "INFO: Your CPU does not support KVM extensions"
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assert_root
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verdict 1
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fi
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# Now, check that the device exists
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if [ -e /dev/kvm ]; then
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echo "INFO: /dev/kvm exists"
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verdict 0
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else
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echo "INFO: /dev/kvm does not exist"
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echo "HINT: sudo modprobe $kvm_mod"
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fi
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assert_root
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# Prepare MSR access
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msr="/dev/cpu/0/msr"
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if [ ! -r "$msr" ]; then
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modprobe msr
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fi
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if [ -e "$msr" -a ! -r "$msr" ]; then
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echo "You must be root to run this check." >&2
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exit 2
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fi
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echo "INFO: Your CPU supports KVM extensions"
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disabled=0
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# check brand-specific registers
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if [ "$virt" = "vmx" ]; then
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BIT=$(rdmsr --bitfield 0:0 0x3a 2>/dev/null || true)
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if [ "$BIT" = "1" ]; then
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# and FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX clear (no tboot)
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BIT=$(rdmsr --bitfield 2:2 0x3a 2>/dev/null || true)
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if [ "$BIT" = "0" ]; then
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disabled=1
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fi
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fi
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elif [ "$virt" = "svm" ]; then
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BIT=$(rdmsr --bitfield 4:4 0xc0010114 2>/dev/null || true)
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if [ "$BIT" = "1" ]; then
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disabled=1
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fi
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elif [ "$virt" = "ARM" ]; then
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# Should also test that we booted in HYP mode, if detectable
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:
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elif [ "$virt" = "generic" ]; then
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:
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else
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echo "FAIL: Unknown virtualization extension: $virt"
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verdict 1
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fi
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if [ "$disabled" -eq 1 ]; then
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echo "INFO: KVM ($virt) is disabled by your BIOS"
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echo "HINT: Enter your BIOS setup and enable Virtualization Technology (VT),"
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echo " and then hard poweroff/poweron your system"
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verdict 1
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fi
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verdict 0
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