[pve-devel] [PATCH v3 qemu-server 6/7] cpuconfig: add find_hosts_common_flags

[Alexandre Derumier <aderumier@odiso.com>]

find common flags && vendor between differents hosts

if vendor are different (amd/intel), return default vendor

Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
---
 PVE/QemuServer/CPUConfig.pm | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/PVE/QemuServer/CPUConfig.pm b/PVE/QemuServer/CPUConfig.pm
index 63e57d4..3f24b31 100644
--- a/PVE/QemuServer/CPUConfig.pm
+++ b/PVE/QemuServer/CPUConfig.pm
@@ -741,6 +741,38 @@ sub find_best_cpumodel {
     }
 }
 
+sub find_hosts_common_flags {
+    my ($hosts_cpuinfo) = @_;
+
+    my $common_vendor = undef;
+    my $common_flags = {};
+
+    my $hosts_flags = {};
+    my $last_vendor = undef;
+    foreach my $cpuinfo (@$hosts_cpuinfo) {
+	my $flags = get_host_cpu_flags($cpuinfo);
+	foreach my $flag (keys %$flags) {
+	    $hosts_flags->{$flag}++;
+	}
+
+	if ($last_vendor && $cpuinfo->{vendor} ne $last_vendor) {
+	    $common_vendor = 'default';
+	} else {
+	    $last_vendor = $cpuinfo->{vendor};
+	    $common_vendor = $last_vendor;
+	}
+    }
+
+    my $nb_hosts = @{$hosts_cpuinfo};
+    foreach my $flag (keys %$hosts_flags) {
+	if ($hosts_flags->{$flag} == $nb_hosts) {
+	    $common_flags->{$flag} = 1;
+	}
+    }
+
+    return ($common_flags, $common_vendor);
+}
+
 
 __PACKAGE__->register();
 __PACKAGE__->init();
-- 
2.30.2