From d01de38cb698785fa7814936db90c450fcc19a32 Mon Sep 17 00:00:00 2001
From: Thomas Lamprecht <t.lamprecht@proxmox.com>
Date: Fri, 15 Oct 2021 19:57:58 +0200
Subject: [PATCH] pci: prepare: improve no-IOMMU error message

give some context

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
---
 PVE/QemuServer/PCI.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/PVE/QemuServer/PCI.pm b/PVE/QemuServer/PCI.pm
index 1bb3de7e..40337846 100644
--- a/PVE/QemuServer/PCI.pm
+++ b/PVE/QemuServer/PCI.pm
@@ -471,7 +471,7 @@ sub prepare_pci_device {
     my ($vmid, $pciid, $index, $mdev) = @_;
 
     my $info = PVE::SysFSTools::pci_device_info("$pciid");
-    die "IOMMU not present\n" if !PVE::SysFSTools::check_iommu_support();
+    die "cannot prepare PCI pass-through, IOMMU not present\n" if !PVE::SysFSTools::check_iommu_support();
     die "no pci device info for device '$pciid'\n" if !$info;
 
     if ($mdev) {