Blame SOURCES/0024-qemu-kvm-dmidecode-look-for-KVM.patch

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From 8528efafcad59f0fde7e15860f19061c3af810fa Mon Sep 17 00:00:00 2001
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From: Andrew Jones <drjones@redhat.com>
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Date: Tue, 27 Oct 2015 18:16:04 +0100
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Subject: [PATCH 24/26] qemu/kvm: dmidecode: look for 'KVM'
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We can check the product name for 'KVM' to determine if we're
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accelerated. This only works for arm/aarch64 targets boot with
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AAVMF and on RHEL x86 targets (which already have KVM in the cpuid
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leaf), but it doesn't hurt to try on all.
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---
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 Makefile.am                                       |   6 +
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 tests/qemu-smbios-kvm/proc/cpuinfo                |  63 ++++++++++
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 tests/qemu-smbios-kvm/proc/self/status            |  41 +++++++
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 tests/qemu-smbios-kvm/sbin/dmidecode              | 141 ++++++++++++++++++++++
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 tests/qemu-smbios-kvm/sbin/uname                  |   2 +
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 tests/qemu-smbios-kvm/sbin/virt-what-cpuid-helper |   2 +
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 tests/test-qemu-smbios-kvm.sh                     |  34 ++++++
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 virt-what.in                                      |   7 +-
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 8 files changed, 294 insertions(+), 2 deletions(-)
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 create mode 100644 tests/qemu-smbios-kvm/proc/cpuinfo
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 create mode 100644 tests/qemu-smbios-kvm/proc/self/status
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 create mode 100755 tests/qemu-smbios-kvm/sbin/dmidecode
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 create mode 100755 tests/qemu-smbios-kvm/sbin/uname
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 create mode 100755 tests/qemu-smbios-kvm/sbin/virt-what-cpuid-helper
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 create mode 100755 tests/test-qemu-smbios-kvm.sh
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diff --git a/Makefile.am b/Makefile.am
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index 0045bcb..7d87ec1 100644
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--- a/Makefile.am
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+++ b/Makefile.am
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@@ -54,6 +54,7 @@ TESTS = \
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 	tests/test-qemu.sh \
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 	tests/test-qemu-arm.sh \
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 	tests/test-qemu-smbios.sh \
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+	tests/test-qemu-smbios-kvm.sh \
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 	tests/test-rhel5-xen-dom0.sh \
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 	tests/test-rhel5-xen-domU-hvm.sh \
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 	tests/test-rhel5-xen-domU-hvm-ia64.sh \
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@@ -143,6 +144,11 @@ EXTRA_DIST = \
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 	tests/qemu-smbios/sbin/dmidecode \
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 	tests/qemu-smbios/sbin/uname \
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 	tests/qemu-smbios/sbin/virt-what-cpuid-helper \
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+	tests/qemu-smbios-kvm/proc/cpuinfo \
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+	tests/qemu-smbios-kvm/proc/self/status \
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+	tests/qemu-smbios-kvm/sbin/dmidecode \
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+	tests/qemu-smbios-kvm/sbin/uname \
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+	tests/qemu-smbios-kvm/sbin/virt-what-cpuid-helper \
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 	tests/rhel5-xen-dom0/proc/cpuinfo \
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 	tests/rhel5-xen-dom0/proc/self/status \
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 	tests/rhel5-xen-dom0/proc/xen/balloon \
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diff --git a/tests/qemu-smbios-kvm/proc/cpuinfo b/tests/qemu-smbios-kvm/proc/cpuinfo
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new file mode 100644
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index 0000000..b83a182
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--- /dev/null
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+++ b/tests/qemu-smbios-kvm/proc/cpuinfo
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@@ -0,0 +1,63 @@
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+processor	: 0
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+Features	: fp asimd evtstrm
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+CPU implementer	: 0x50
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+CPU architecture: 8
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+CPU variant	: 0x0
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+CPU part	: 0x000
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+CPU revision	: 0
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+
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+processor	: 1
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+Features	: fp asimd evtstrm
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+CPU implementer	: 0x50
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+CPU architecture: 8
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+CPU variant	: 0x0
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+CPU part	: 0x000
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+CPU revision	: 0
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+
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+processor	: 2
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+Features	: fp asimd evtstrm
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+CPU implementer	: 0x50
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+CPU architecture: 8
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+CPU variant	: 0x0
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+CPU part	: 0x000
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+CPU revision	: 0
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+
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+processor	: 3
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+Features	: fp asimd evtstrm
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+CPU implementer	: 0x50
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+CPU architecture: 8
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+CPU variant	: 0x0
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+CPU part	: 0x000
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+CPU revision	: 0
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+
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+processor	: 4
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+Features	: fp asimd evtstrm
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+CPU implementer	: 0x50
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+CPU architecture: 8
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+CPU variant	: 0x0
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+CPU part	: 0x000
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+CPU revision	: 0
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+
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+processor	: 5
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+Features	: fp asimd evtstrm
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+CPU implementer	: 0x50
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+CPU architecture: 8
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+CPU variant	: 0x0
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+CPU part	: 0x000
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+CPU revision	: 0
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+
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+processor	: 6
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+Features	: fp asimd evtstrm
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+CPU implementer	: 0x50
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+CPU architecture: 8
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+CPU variant	: 0x0
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+CPU part	: 0x000
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+CPU revision	: 0
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+
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+processor	: 7
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+Features	: fp asimd evtstrm
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+CPU implementer	: 0x50
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+CPU architecture: 8
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+CPU variant	: 0x0
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+CPU part	: 0x000
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+CPU revision	: 0
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diff --git a/tests/qemu-smbios-kvm/proc/self/status b/tests/qemu-smbios-kvm/proc/self/status
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new file mode 100644
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index 0000000..751f5e7
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--- /dev/null
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+++ b/tests/qemu-smbios-kvm/proc/self/status
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@@ -0,0 +1,41 @@
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+Name:	cat
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+State:	R (running)
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+Tgid:	8307
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+Ngid:	0
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+Pid:	8307
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+PPid:	1415
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+TracerPid:	0
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+Uid:	0	0	0	0
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+Gid:	0	0	0	0
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+FDSize:	256
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+Groups:	
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+VmPeak:	  109696 kB
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+VmSize:	  109696 kB
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+VmLck:	       0 kB
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+VmPin:	       0 kB
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+VmHWM:	     832 kB
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+VmRSS:	     832 kB
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+VmData:	     320 kB
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+VmStk:	     256 kB
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+VmExe:	      64 kB
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+VmLib:	    1536 kB
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+VmPTE:	     192 kB
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+VmSwap:	       0 kB
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+Threads:	1
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+SigQ:	0/5821
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+SigPnd:	0000000000000000
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+ShdPnd:	0000000000000000
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+SigBlk:	0000000000000000
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+SigIgn:	0000000000000000
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+SigCgt:	0000000000000000
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+CapInh:	0000000000000000
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+CapPrm:	0000003fffffffff
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+CapEff:	0000003fffffffff
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+CapBnd:	0000003fffffffff
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+Seccomp:	0
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+Cpus_allowed:	ff
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+Cpus_allowed_list:	0-7
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+Mems_allowed:	1
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+Mems_allowed_list:	0
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+voluntary_ctxt_switches:	1
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+nonvoluntary_ctxt_switches:	1
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diff --git a/tests/qemu-smbios-kvm/sbin/dmidecode b/tests/qemu-smbios-kvm/sbin/dmidecode
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new file mode 100755
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index 0000000..a2caabb
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--- /dev/null
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+++ b/tests/qemu-smbios-kvm/sbin/dmidecode
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@@ -0,0 +1,141 @@
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+#!/bin/sh -
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+cat <<'EOF'
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+# dmidecode 3.0
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+Getting SMBIOS data from sysfs.
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+SMBIOS 3.0.0 present.
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+Table at 0x136650000.
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+
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+Handle 0x0100, DMI type 1, 27 bytes
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+System Information
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+	Manufacturer: QEMU
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+	Product Name: KVM Virtual Machine
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+	Version: 1.0
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+	Serial Number: Not Specified
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+	UUID: 6EB70381-DF9C-4407-B6AB-9FA4452117EA
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+	Wake-up Type: Power Switch
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+	SKU Number: Not Specified
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+	Family: Red Hat Enterprise Linux
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+
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+Handle 0x0300, DMI type 3, 21 bytes
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+Chassis Information
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+	Manufacturer: QEMU
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+	Type: Other
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+	Lock: Not Present
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+	Version: 1.0
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+	Serial Number: Not Specified
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+	Asset Tag: Not Specified
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+	Boot-up State: Safe
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+	Power Supply State: Safe
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+	Thermal State: Safe
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+	Security Status: Unknown
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+	OEM Information: 0x00000000
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+	Height: Unspecified
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+	Number Of Power Cords: Unspecified
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+	Contained Elements: 0
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+
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+Handle 0x0400, DMI type 4, 42 bytes
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+Processor Information
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+	Socket Designation: CPU 0
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+	Type: Central Processor
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+	Family: Other
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+	Manufacturer: QEMU
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+	ID: 00 00 00 00 00 00 00 00
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+	Version: 1.0
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+	Voltage: Unknown
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+	External Clock: Unknown
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+	Max Speed: 2000 MHz
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+	Current Speed: 2000 MHz
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+	Status: Populated, Enabled
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+	Upgrade: Other
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+	L1 Cache Handle: Not Provided
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+	L2 Cache Handle: Not Provided
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+	L3 Cache Handle: Not Provided
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+	Serial Number: Not Specified
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+	Asset Tag: Not Specified
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+	Part Number: Not Specified
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+	Core Count: 1
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+	Core Enabled: 1
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+	Thread Count: 1
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+	Characteristics: None
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+
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+Handle 0x0401, DMI type 4, 42 bytes
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+Processor Information
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+	Socket Designation: CPU 1
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+	Type: Central Processor
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+	Family: Other
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+	Manufacturer: QEMU
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+	ID: 00 00 00 00 00 00 00 00
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+	Version: 1.0
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+	Voltage: Unknown
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+	External Clock: Unknown
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+	Max Speed: 2000 MHz
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+	Current Speed: 2000 MHz
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+	Status: Populated, Enabled
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+	Upgrade: Other
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+	L1 Cache Handle: Not Provided
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+	L2 Cache Handle: Not Provided
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+	L3 Cache Handle: Not Provided
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+	Serial Number: Not Specified
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+	Asset Tag: Not Specified
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+	Part Number: Not Specified
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+	Core Count: 1
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+	Core Enabled: 1
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+	Thread Count: 1
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+	Characteristics: None
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+
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+Handle 0x1000, DMI type 16, 23 bytes
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+Physical Memory Array
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+	Location: Other
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+	Use: System Memory
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+	Error Correction Type: Multi-bit ECC
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+	Maximum Capacity: 4 GB
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+	Error Information Handle: Not Provided
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+	Number Of Devices: 1
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+
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+Handle 0x1100, DMI type 17, 40 bytes
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+Memory Device
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+	Array Handle: 0x1000
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+	Error Information Handle: Not Provided
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+	Total Width: Unknown
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+	Data Width: Unknown
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+	Size: 4096 MB
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+	Form Factor: DIMM
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+	Set: None
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+	Locator: DIMM 0
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+	Bank Locator: Not Specified
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+	Type: RAM
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+	Type Detail: Other
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+	Speed: Unknown
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+	Manufacturer: QEMU
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+	Serial Number: Not Specified
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+	Asset Tag: Not Specified
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+	Part Number: Not Specified
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+	Rank: Unknown
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+	Configured Clock Speed: Unknown
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+	Minimum Voltage: Unknown
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+	Maximum Voltage: Unknown
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+	Configured Voltage: Unknown
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+
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+Handle 0x2000, DMI type 32, 11 bytes
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+System Boot Information
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+	Status: No errors detected
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+
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+Handle 0x0000, DMI type 0, 24 bytes
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+BIOS Information
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+	Vendor: EFI Development Kit II / OVMF
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+	Version: 0.0.0
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+	Release Date: 02/06/2015
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+	Address: 0xE8000
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+	Runtime Size: 96 kB
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+	ROM Size: 64 kB
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+	Characteristics:
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+		BIOS characteristics not supported
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+		Targeted content distribution is supported
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+		UEFI is supported
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+		System is a virtual machine
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+	BIOS Revision: 0.0
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+
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+Handle 0xFEFF, DMI type 127, 4 bytes
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+End Of Table
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+
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+EOF
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diff --git a/tests/qemu-smbios-kvm/sbin/uname b/tests/qemu-smbios-kvm/sbin/uname
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new file mode 100755
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index 0000000..bd33a2d
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--- /dev/null
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+++ b/tests/qemu-smbios-kvm/sbin/uname
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@@ -0,0 +1,2 @@
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+#!/bin/sh -
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+echo aarch64
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diff --git a/tests/qemu-smbios-kvm/sbin/virt-what-cpuid-helper b/tests/qemu-smbios-kvm/sbin/virt-what-cpuid-helper
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new file mode 100755
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index 0000000..77a6692
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--- /dev/null
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+++ b/tests/qemu-smbios-kvm/sbin/virt-what-cpuid-helper
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@@ -0,0 +1,2 @@
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+#!/bin/sh -
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+# nothing
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diff --git a/tests/test-qemu-smbios-kvm.sh b/tests/test-qemu-smbios-kvm.sh
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new file mode 100755
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index 0000000..f4d8e38
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--- /dev/null
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+++ b/tests/test-qemu-smbios-kvm.sh
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@@ -0,0 +1,34 @@
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+# Test for qemu on ARM
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+# Copyright (C) 2015 Red Hat Inc.
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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 as published by
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+# the Free Software Foundation; either version 2 of the License, or
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+# (at your option) any later version.
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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, write to the Free Software
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+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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+
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+root=tests/qemu-smbios-kvm
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+
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+output="$(./virt-what --test-root=$root 2>&1)"
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+expected="kvm"
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+
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+if [ "$output" != "$expected" ]; then
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+    echo "$0: test failed because output did not match expected"
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+    echo "Expected output was:"
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+    echo "----------------------------------------"
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+    echo "$expected"
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+    echo "----------------------------------------"
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+    echo "But the actual output of the program was:"
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+    echo "----------------------------------------"
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+    echo "$output"
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+    echo "----------------------------------------"
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+    exit 1
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+fi
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diff --git a/virt-what.in b/virt-what.in
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index 355e438..776bfde 100644
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--- a/virt-what.in
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+++ b/virt-what.in
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@@ -262,9 +262,12 @@ fi
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 if ! "$skip_qemu_kvm"; then
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     if [ "$cpuid" = "KVMKVMKVM" ]; then
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         echo kvm
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+    elif echo "$dmi" | grep -q 'Product Name: KVM'; then
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+        echo kvm
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+        skip_lkvm=true
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     elif echo "$dmi" | grep -q 'Manufacturer: QEMU'; then
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-        # We don't have enough information to determine if we're
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-        # using KVM acceleration or not.
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+        # The test for KVM above failed, so now we know we're
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+        # not using KVM acceleration.
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         echo qemu
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         skip_lkvm=true
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     elif [ "$arch" = "arm" ] || [ "$arch" = "aarch64" ]; then
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-- 
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1.8.3.1
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