On Tue, Jul 18, 2017 at 01:45:09PM +0100, Daniel P. Berrange wrote:
> QEMU >= 2.10 will start reporting the string "TCGTCGTCGTCG"
> for CPUID queries when running under TCG only (KVM signature
> is unchanged)
>
> Signed-off-by: Daniel P. Berrange <berrange@xxxxxxxxxx>
> ---
>
> Changed in v2:
>
> - Rebase to git master
>
> virt-what.in | 9 ++++++---
> 1 file changed, 6 insertions(+), 3 deletions(-)
>
> diff --git a/virt-what.in b/virt-what.in
> index 5cf2136..5f9edd7 100644
> --- a/virt-what.in
> +++ b/virt-what.in
> @@ -275,6 +275,9 @@ fi
> if ! "$skip_qemu_kvm"; then
> if [ "$cpuid" = "KVMKVMKVM" ]; then
> echo kvm
> + elif [ "$cpuid" = "TCGTCGTCGTCG" ]; then
> + echo qemu
> + skip_lkvm=true
> elif echo "$dmi" | grep -q 'Product Name: KVM'; then
> echo kvm
> skip_lkvm=true
> @@ -297,10 +300,10 @@ if ! "$skip_qemu_kvm"; then
> echo kvm
> skip_lkvm=true
> else
> - # XXX This is known to fail for qemu with the explicit -cpu
> + # This is known to fail for qemu with the explicit -cpu
> # option, since /proc/cpuinfo will not contain the QEMU
> - # string. The long term fix for this would be to export
> - # another CPUID leaf for non-accelerated qemu.
> + # string. QEMU 2.10 added a new CPUID leaf, so this
> + # problem only triggered for older QEMU
> if grep -q 'QEMU' "${root}/proc/cpuinfo"; then
> echo qemu
> fi
> --
> 2.13.0
Thanks Dan, that patch has been pushed upstream.
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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