[libvirt] [PATCH v2] qemu: Start domain on a node without cpu affinity

[Roman Bolshakov]

qemuProcessInitCpuAffinity prevents a VM from getting started on a
platform that uses cpu affinity wrapper stubs e.g. macOS.

The patch adds qemuProcessInitCpuAffinity stub on all platforms without
HAVE_SCHED_GETAFFINITY or HAVE_BSD_CPU_AFFINITY.

Signed-off-by: Roman Bolshakov <r.bolshakov at yadro.com>
---

Changes since v1:
* Replaced no-op virProcessGetAffinity with qemuProcessInitCpuAffinity
  stub.

 src/qemu/qemu_process.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index ab749389ee..28d52f01f6 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -2343,6 +2343,7 @@ qemuProcessDetectIOThreadPIDs(virQEMUDriverPtr driver,
 /*
  * To be run between fork/exec of QEMU only
  */
+#if defined(HAVE_SCHED_GETAFFINITY) || defined(HAVE_BSD_CPU_AFFINITY)
 static int
 qemuProcessInitCpuAffinity(virDomainObjPtr vm)
 {
@@ -2413,6 +2414,13 @@ qemuProcessInitCpuAffinity(virDomainObjPtr vm)
     virBitmapFree(hostcpumap);
     return ret;
 }
+#else
+static int
+qemuProcessInitCpuAffinity(virDomainObjPtr vm ATTRIBUTE_UNUSED)
+{
+    return 0;
+}
+#endif
 
 /* set link states to down on interfaces at qemu start */
 static int
-- 
2.17.0