[pve-devel] [PATCH qemu-server 1/3] query cpu flags: fix detecting KVM support

[Fiona Ebner <f.ebner@proxmox.com>]

KVM can only be used when the host arch matches the vCPU arch.

Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
---
 src/PVE/QemuServer.pm | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/PVE/QemuServer.pm b/src/PVE/QemuServer.pm
index 7a0a2606..ebb6ae19 100644
--- a/src/PVE/QemuServer.pm
+++ b/src/PVE/QemuServer.pm
@@ -2939,7 +2939,8 @@ sub vga_conf_has_spice {
 sub query_supported_cpu_flags {
     my ($arch) = @_;
 
-    $arch //= get_host_arch();
+    my $host_arch = get_host_arch();
+    $arch //= $host_arch;
     my $default_machine = PVE::QemuServer::Machine::default_machine_for_arch($arch);
 
     my $flags = {};
@@ -2949,7 +2950,7 @@ sub query_supported_cpu_flags {
     die "QEMU/KVM cannot detect CPU flags on ARM (aarch64)\n"
         if $arch eq "aarch64";
 
-    my $kvm_supported = defined(kvm_version());
+    my $kvm_supported = defined(kvm_version()) && $arch eq $host_arch;
     my $qemu_cmd = PVE::QemuServer::Helpers::get_command_for_arch($arch);
     my $fakevmid = -1;
     my $pidfile = PVE::QemuServer::Helpers::vm_pidfile_name($fakevmid);
-- 
2.47.3



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