From: Fiona Ebner <f.ebner@proxmox.com>
To: pve-devel@lists.proxmox.com
Subject: [pve-devel] [PATCH qemu-server 1/3] query cpu flags: fix detecting KVM support
Date: Tue, 27 Jan 2026 17:14:59 +0100 [thread overview]
Message-ID: <20260127161558.225510-2-f.ebner@proxmox.com> (raw)
In-Reply-To: <20260127161558.225510-1-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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next prev parent reply other threads:[~2026-01-27 16:16 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-27 16:14 [pve-devel] [PATCH-SERIES qemu-server 0/3] query cpu flags: support aarch64 host Fiona Ebner
2026-01-27 16:14 ` Fiona Ebner [this message]
2026-01-27 16:15 ` [pve-devel] [PATCH qemu-server 2/3] query cpu flags: query correct model for TCG Fiona Ebner
2026-01-27 16:15 ` [pve-devel] [PATCH qemu-server 3/3] query cpu flags: support aarch64 host Fiona Ebner
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