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[Qemu-devel] [PATCH 1/2] numa: allow memory-less nodes when using memdev
From: |
Igor Mammedov |
Subject: |
[Qemu-devel] [PATCH 1/2] numa: allow memory-less nodes when using memdev as backend |
Date: |
Tue, 2 Jul 2019 10:07:44 -0400 |
QEMU fails to start if memory-less node is present when memdev
is used
qemu-system-x86_64 -object memory-backend-ram,id=ram0,size=128M \
-numa node -numa node,memdev=ram0
with error:
"memdev option must be specified for either all or no nodes"
which works as expected if legacy 'mem' is used.
Fix check to make memory-less nodes valid when memdev option is used
but still disallow mix of mem and memdev options.
Signed-off-by: Igor Mammedov <address@hidden>
---
numa.c | 19 +++++++------------
1 file changed, 7 insertions(+), 12 deletions(-)
diff --git a/numa.c b/numa.c
index 91a29138a2..cdef332773 100644
--- a/numa.c
+++ b/numa.c
@@ -48,7 +48,8 @@ QemuOptsList qemu_numa_opts = {
.desc = { { 0 } } /* validated with OptsVisitor */
};
-static int have_memdevs = -1;
+static int have_memdevs;
+static int have_mem;
static int max_numa_nodeid; /* Highest specified NUMA node ID, plus one.
* For all nodes, nodeid < max_numa_nodeid
*/
@@ -105,17 +106,11 @@ static void parse_numa_node(MachineState *ms,
NumaNodeOptions *node,
}
}
- if (node->has_mem && node->has_memdev) {
- error_setg(errp, "cannot specify both mem= and memdev=");
- return;
- }
-
- if (have_memdevs == -1) {
- have_memdevs = node->has_memdev;
- }
- if (node->has_memdev != have_memdevs) {
- error_setg(errp, "memdev option must be specified for either "
- "all or no nodes");
+ have_memdevs = have_memdevs ? : node->has_memdev;
+ have_mem = have_mem ? : node->has_mem;
+ if ((node->has_mem && have_memdevs) || (node->has_memdev && have_mem)) {
+ error_setg(errp, "numa configuration should use either mem= or
memdev=,"
+ "mixing both is not allowed");
return;
}
--
2.18.1