[PATCH qemu-server 1/5] qemuserver: add pvpanic device

[Kaiyang Wu <wukaiyang2003@gmail.com>]

Add pvpanic PCI device to monitor guest system panics.

Suggested-by: Dominik Csapak <d.csapak@proxmox.com>
Signed-off-by: Kaiyang Wu <wukaiyang@loongfans.cn>
---
 src/PVE/API2/Qemu.pm      |  1 +
 src/PVE/QemuServer.pm     | 11 +++++++++++
 src/PVE/QemuServer/PCI.pm |  1 +
 3 files changed, 13 insertions(+)

diff --git a/src/PVE/API2/Qemu.pm b/src/PVE/API2/Qemu.pm
index 714c87a9..d60e90a8 100644
--- a/src/PVE/API2/Qemu.pm
+++ b/src/PVE/API2/Qemu.pm
@@ -818,6 +818,7 @@ my $hwtypeoptions = {
     'watchdog' => 1,
     'audio0' => 1,
     'rng0' => 1,
+    'pvpanic' => 1,
 };
 
 my $generaloptions = {
diff --git a/src/PVE/QemuServer.pm b/src/PVE/QemuServer.pm
index 5849392e..facbb06a 100644
--- a/src/PVE/QemuServer.pm
+++ b/src/PVE/QemuServer.pm
@@ -740,6 +740,12 @@ EODESCR
         optional => 1,
         default => 1,
     },
+    pvpanic => {
+        optional => 1,
+        type => 'boolean',
+        description => "Configure a pvpanic device to monitor guest panics",
+        default => 0,
+    },
 };
 
 my $cicustom_fmt = {
@@ -3439,6 +3445,11 @@ sub config_to_command {
         push @$cmd, '-nographic';
     }
 
+    if (defined($conf->{pvpanic}) && $conf->{pvpanic}) {
+        my $pvpanicpciaddr = print_pci_addr("pvpanic", $arch);
+        push @$devices, '-device', "pvpanic-pci,id=pvpanic$pvpanicpciaddr";
+    }
+
     # For now, handles only specific parts, but the final goal is to cover everything.
     my $cfg2cmd_opts = { forcemachine => $forcemachine };
     my $cfg2cmd = PVE::QemuServer::Cfg2Cmd->new($conf, $defaults, $version_guard, $cfg2cmd_opts);
diff --git a/src/PVE/QemuServer/PCI.pm b/src/PVE/QemuServer/PCI.pm
index 35e18ad9..faaeffca 100644
--- a/src/PVE/QemuServer/PCI.pm
+++ b/src/PVE/QemuServer/PCI.pm
@@ -220,6 +220,7 @@ sub get_pci_addr_map {
         'pci.4' => { bus => 1, addr => 28 },
         'rng0' => { bus => 1, addr => 29 },
         'pci.2-igd' => { bus => 1, addr => 30 }, # replaces pci.2 in case a legacy IGD device is passed through
+        'pvpanic' => { bus => 1, addr => 31 },
         'virtio6' => { bus => 2, addr => 1 },
         'virtio7' => { bus => 2, addr => 2 },
         'virtio8' => { bus => 2, addr => 3 },
-- 
2.55.0