[libvirt] [PATCH v2 06/14] qemu: Implement @access for <memory/> banks

[Michal Privoznik]

Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
---
 src/qemu/qemu_command.c                            | 11 +++++++--
 src/qemu/qemu_command.h                            |  1 +
 src/qemu/qemu_hotplug.c                            |  2 +-
 .../qemuxml2argv-memory-hotplug-nvdimm-access.args | 26 ++++++++++++++++++++++
 tests/qemuxml2argvtest.c                           |  2 ++
 5 files changed, 39 insertions(+), 3 deletions(-)
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-memory-hotplug-nvdimm-access.args

diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 46a6ca9f0..287387055 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -3090,6 +3090,7 @@ qemuBuildControllerDevCommandLine(virCommandPtr cmd,
  *               for default
  * @autoNodeset: fallback nodeset in case of automatic NUMA placement
  * @memPathReq: request memory-backend-file with specific mem-path
+ * @memAccessReq: specifically requested memAccess mode
  * @force: forcibly use one of the backends
  *
  * Creates a configuration object that represents memory backend of given guest
@@ -3122,6 +3123,7 @@ qemuBuildMemoryBackendStr(virJSONValuePtr *backendProps,
                           virBitmapPtr userNodeset,
                           virBitmapPtr autoNodeset,
                           const char *memPathReq,
+                          virDomainMemoryAccess memAccessReq,
                           bool force)
 {
     virDomainHugePagePtr master_hugepage = NULL;
@@ -3154,6 +3156,9 @@ qemuBuildMemoryBackendStr(virJSONValuePtr *backendProps,
         memAccess = virDomainNumaGetNodeMemoryAccessMode(def->numa, guestNode);
     }
 
+    if (memAccessReq)
+        memAccess = memAccessReq;
+
     if (virDomainNumatuneGetMode(def->numa, guestNode, &mode) < 0 &&
         virDomainNumatuneGetMode(def->numa, -1, &mode) < 0)
         mode = VIR_DOMAIN_NUMATUNE_MEM_STRICT;
@@ -3352,7 +3357,9 @@ qemuBuildMemoryCellBackendStr(virDomainDefPtr def,
 
     if ((rc = qemuBuildMemoryBackendStr(&props, &backendType, cfg, qemuCaps,
                                         def, cell, memsize, 0, NULL,
-                                        auto_nodeset, NULL, false)) < 0)
+                                        auto_nodeset, NULL,
+                                        VIR_DOMAIN_MEMORY_ACCESS_DEFAULT,
+                                        false)) < 0)
         goto cleanup;
 
     if (!(*backendStr = virQEMUBuildObjectCommandlineFromJSON(backendType,
@@ -3394,7 +3401,7 @@ qemuBuildMemoryDimmBackendStr(virDomainMemoryDefPtr mem,
     if (qemuBuildMemoryBackendStr(&props, &backendType, cfg, qemuCaps, def,
                                   mem->targetNode, mem->size, mem->pagesize,
                                   mem->sourceNodes, auto_nodeset, mem->path,
-                                  true) < 0)
+                                  mem->access, true) < 0)
         goto cleanup;
 
     ret = virQEMUBuildObjectCommandlineFromJSON(backendType, alias, props);
diff --git a/src/qemu/qemu_command.h b/src/qemu/qemu_command.h
index e23930255..e32e1718d 100644
--- a/src/qemu/qemu_command.h
+++ b/src/qemu/qemu_command.h
@@ -135,6 +135,7 @@ int qemuBuildMemoryBackendStr(virJSONValuePtr *backendProps,
                               virBitmapPtr userNodeset,
                               virBitmapPtr autoNodeset,
                               const char *memPath,
+                              virDomainMemoryAccess memAccessReq,
                               bool force);
 
 char *qemuBuildMemoryDeviceStr(virDomainMemoryDefPtr mem);
diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index 51b87804d..f2299f66e 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -2219,7 +2219,7 @@ qemuDomainAttachMemory(virQEMUDriverPtr driver,
     if (qemuBuildMemoryBackendStr(&props, &backendType, cfg, priv->qemuCaps,
                                   vm->def, mem->targetNode, mem->size,
                                   mem->pagesize, mem->sourceNodes, NULL,
-                                  mem->path, true) < 0)
+                                  mem->path, mem->access, true) < 0)
         goto cleanup;
 
     if (virDomainMemoryInsert(vm->def, mem) < 0) {
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-memory-hotplug-nvdimm-access.args b/tests/qemuxml2argvdata/qemuxml2argv-memory-hotplug-nvdimm-access.args
new file mode 100644
index 000000000..d398b2294
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-memory-hotplug-nvdimm-access.args
@@ -0,0 +1,26 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu \
+-name QEMUGuest1 \
+-S \
+-machine pc,accel=tcg,nvdimm=on \
+-m size=219136k,slots=16,maxmem=1099511627776k \
+-smp 2,sockets=2,cores=1,threads=1 \
+-numa node,nodeid=0,cpus=0-1,mem=214 \
+-object memory-backend-file,id=memnvdimm0,prealloc=yes,mem-path=/tmp/nvdimm,\
+share=no,size=536870912 \
+-device nvdimm,node=0,memdev=memnvdimm0,id=nvdimm0,slot=0 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-nographic \
+-nodefaults \
+-monitor unix:/tmp/lib/domain--1-QEMUGuest1/monitor.sock,server,nowait \
+-no-acpi \
+-boot c \
+-usb \
+-drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-ide0-0-0 \
+-device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 05a51a389..97a2c55cd 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -2335,6 +2335,8 @@ mymain(void)
             QEMU_CAPS_OBJECT_MEMORY_RAM, QEMU_CAPS_OBJECT_MEMORY_FILE);
     DO_TEST("memory-hotplug-nvdimm", QEMU_CAPS_MACHINE_OPT, QEMU_CAPS_DEVICE_NVDIMM,
             QEMU_CAPS_NUMA, QEMU_CAPS_OBJECT_MEMORY_RAM, QEMU_CAPS_OBJECT_MEMORY_FILE);
+    DO_TEST("memory-hotplug-nvdimm-access", QEMU_CAPS_MACHINE_OPT, QEMU_CAPS_DEVICE_NVDIMM,
+            QEMU_CAPS_NUMA, QEMU_CAPS_OBJECT_MEMORY_RAM, QEMU_CAPS_OBJECT_MEMORY_FILE);
 
     DO_TEST("machine-aeskeywrap-on-caps",
             QEMU_CAPS_MACHINE_OPT, QEMU_CAPS_AES_KEY_WRAP,
-- 
2.11.0