[pve-devel] [PATCH qemu-server] config2command: add warning when SPICE memory configuration can lead to failing display initialization

[Fiona Ebner]

which happens with either SeaBIOS+q35 or OVMF+efitype=2m as reported
in https://bugzilla.proxmox.com/show_bug.cgi?id=3726

Signed-off-by: Fiona Ebner <f.eb...@proxmox.com>
---
 PVE/QemuServer.pm | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index bbd19186..303895f9 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -3489,6 +3489,27 @@ my sub print_ovmf_drive_commandlines {
     return ("if=pflash,unit=0,format=raw,readonly=on,file=$ovmf_code", 
$var_drive_str);
 }
 
+# See bug #3726
+my sub check_spice_memory {
+    my ($memory, $ovmf, $efidisk, $q35) = @_;
+
+    return if !$memory || $memory <= 128;
+
+    if ($ovmf) {
+       my $efitype = '2m';
+       if ($efidisk) {
+           my $drive = parse_drive('efidisk0', $efidisk);
+           $efitype = $drive->{efitype} if $drive->{efitype};
+       }
+
+       log_warn("limit SPICE memory to 128 MiB or use efitype=4m EFI disk if 
display init fails")
+           if $efitype && $efitype eq '2m';
+    } else {
+       log_warn("limit SPICE memory to 128 MiB or use machine type i440fx if 
display init fails")
+           if $q35;
+    }
+}
+
 sub config_to_command {
     my ($storecfg, $vmid, $conf, $defaults, $forcemachine, $forcecpu,
         $pbs_backing) = @_;
@@ -3650,6 +3671,9 @@ sub config_to_command {
        }
     }
 
+    check_spice_memory($vga->{memory}, ($conf->{bios} // '') eq 'ovmf', 
$conf->{efidisk0}, $q35)
+       if $vga->{type} eq 'qxl';
+
     # enable absolute mouse coordinates (needed by vnc)
     my $tablet = $conf->{tablet};
     if (!defined($tablet)) {
-- 
2.39.2



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