meson, xen: fix condition for enabling the Xen accelerator

A misspelled condition in xen_native.h is hiding a bug in the enablement of
Xen for qemu-system-aarch64.  The bug becomes apparent when building for
Xen 4.18.

While the i386 emulator provides the xenpv machine type for multiple architectures,
and therefore can be compiled with Xen enabled even when the host is Arm, the
opposite is not true: qemu-system-aarch64 can only be compiled with Xen support
enabled when the host is Arm.

Expand the computation of accelerator_targets['CONFIG_XEN'] similar to what is
already there for KVM.

Cc: Stefano Stabellini <stefano.stabellini@amd.com>
Cc: Richard W.M. Jones <rjones@redhat.com>
Cc: Daniel P. Berrangé <berrange@redhat.com>
Reported-by: Michael Young <m.a.young@durham.ac.uk>
Fixes: 0c8ab1cddd6 ("xen_arm: Create virtio-mmio devices during initialization", 2023-08-30)
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/meson.build b/meson.build
index ec01f8b138aaa1c30a84989445140a4b04d926b4..67f4ede8aea838a1f643df0271e130c8a8e4c1ab 100644 (file)
--- a/meson.build
+++ b/meson.build
@@ -123,21 +123,24 @@ if get_option('kvm').allowed() and targetos == 'linux'
   kvm_targets_c = '"' + '" ,"'.join(kvm_targets) + '"'
 endif
 config_host_data.set('CONFIG_KVM_TARGETS', kvm_targets_c)
-
 accelerator_targets = { 'CONFIG_KVM': kvm_targets }
 
+if cpu in ['x86', 'x86_64']
+  xen_targets = ['i386-softmmu', 'x86_64-softmmu']
+elif cpu in ['arm', 'aarch64']
+  # i386 emulator provides xenpv machine type for multiple architectures
+  xen_targets = ['i386-softmmu', 'x86_64-softmmu', 'aarch64-softmmu']
+else
+  xen_targets = []
+endif
+accelerator_targets += { 'CONFIG_XEN': xen_targets }
+
 if cpu in ['aarch64']
   accelerator_targets += {
     'CONFIG_HVF': ['aarch64-softmmu']
   }
 endif
 
-if cpu in ['x86', 'x86_64', 'arm', 'aarch64']
-  # i386 emulator provides xenpv machine type for multiple architectures
-  accelerator_targets += {
-    'CONFIG_XEN': ['i386-softmmu', 'x86_64-softmmu', 'aarch64-softmmu'],
-  }
-endif
 if cpu in ['x86', 'x86_64']
   accelerator_targets += {
     'CONFIG_HVF': ['x86_64-softmmu'],