[pve-devel] [PATCH qemu-server 04/10] memory: add get_static_mem

[Alexandre Derumier]

Signed-off-by: Alexandre Derumier <aderumier at odiso.com>
---
 PVE/QemuServer/Memory.pm | 50 ++++++++++++++++++++++++----------------
 1 file changed, 30 insertions(+), 20 deletions(-)

diff --git a/PVE/QemuServer/Memory.pm b/PVE/QemuServer/Memory.pm
index 668508b..90e355b 100644
--- a/PVE/QemuServer/Memory.pm
+++ b/PVE/QemuServer/Memory.pm
@@ -15,7 +15,33 @@ get_current_memory
 );
 
 my $MAX_NUMA = 8;
-my $STATICMEM = 1024;
+
+my sub get_static_mem {
+    my ($conf) = @_;
+
+    my $sockets = 1;
+    $sockets = $conf->{smp} if $conf->{smp}; # old style - no longer iused
+    $sockets = $conf->{sockets} if $conf->{sockets};
+    my $hotplug_features = PVE::QemuServer::parse_hotplug_features(defined($conf->{hotplug}) ? $conf->{hotplug} : '1');
+
+    my $static_memory = 0;
+    my $memory = PVE::QemuServer::parse_memory($conf->{memory});
+
+    if($memory->{max}) {
+	my $dimm_size = $memory->{max} / 64;
+	#static mem can't be lower than 4G and lower than 1 dimmsize by socket
+	$static_memory = $dimm_size * $sockets;
+	$static_memory = 4096 if $static_memory < 4096;
+    } elsif ($hotplug_features->{memory}) {
+	#legacy
+	$static_memory = 1024;
+	$static_memory = $static_memory * $sockets if ($conf->{hugepages} && $conf->{hugepages} == 1024);
+    } else {
+       $static_memory = $memory->{current};
+    }
+
+    return $static_memory;
+}
 
 my $_host_bits;
 my sub get_host_phys_address_bits {
@@ -177,8 +203,7 @@ sub qemu_memory_hotplug {
     my $memory = get_current_memory($conf);
     return $value if $value == $memory;
 
-    my $static_memory = $STATICMEM;
-    $static_memory = $static_memory * $sockets if ($conf->{hugepages} && $conf->{hugepages} == 1024);
+    my $static_memory = get_static_mem($conf);
 
     die "memory can't be lower than $static_memory MB" if $value < $static_memory;
     my $MAX_MEM = get_max_mem($conf);
@@ -288,7 +313,7 @@ sub config {
 
     my $memory = get_current_memory($conf);
 
-    my $static_memory = 0;
+    my $static_memory = get_static_mem($conf);
 
     if ($hotplug_features->{memory}) {
 	die "NUMA needs to be enabled for memory hotplug\n" if !$conf->{numa};
@@ -300,18 +325,10 @@ sub config {
 		if $conf->{"numa$i"};
 	}
 
-	my $sockets = 1;
-	$sockets = $conf->{sockets} if $conf->{sockets};
-
-	$static_memory = $STATICMEM;
-	$static_memory = $static_memory * $sockets if ($conf->{hugepages} && $conf->{hugepages} == 1024);
-
 	die "minimum memory must be ${static_memory}MB\n" if($memory < $static_memory);
 	push @$cmd, '-m', "size=${static_memory},slots=255,maxmem=${MAX_MEM}M";
 
     } else {
-
-	$static_memory = $memory;
 	push @$cmd, '-m', $static_memory;
     }
 
@@ -504,20 +521,13 @@ sub hugepages_topology {
 
     my $defaults = PVE::QemuServer::load_defaults();
     my $memory = get_current_memory($conf);
-    my $static_memory = 0;
+    my $static_memory = get_static_mem($conf);
     my $sockets = 1;
     $sockets = $conf->{smp} if $conf->{smp}; # old style - no longer iused
     $sockets = $conf->{sockets} if $conf->{sockets};
     my $numa_custom_topology = undef;
     my $hotplug_features = PVE::QemuServer::parse_hotplug_features(defined($conf->{hotplug}) ? $conf->{hotplug} : '1');
 
-    if ($hotplug_features->{memory}) {
-	$static_memory = $STATICMEM;
-	$static_memory = $static_memory * $sockets if ($conf->{hugepages} && $conf->{hugepages} == 1024);
-    } else {
-	$static_memory = $memory;
-    }
-
     #custom numa topology
     for (my $i = 0; $i < $MAX_NUMA; $i++) {
 	next if !$conf->{"numa$i"};
-- 
2.30.2