nemu-config: adjust defaults in configuration-nemu.toml

- For initial offering of virtiofsd, hugepages are required
- use the qemu hypervisor type for configuration template
- decrease virtiofs cache size from 8192 to 1024, to better support
running with virtio-fs on smaller machines while hugepages are required.
- For initial experimental release, utilize virtio-serial instead of
vsock

Fixes: #1662

Signed-off-by: Eric Ernst <eric.ernst@intel.com>

Makefile

@@ -163,9 +163,9 @@ DEFENTROPYSOURCE := /dev/urandom
 DEFDISABLEBLOCK := false
 DEFSHAREDFS := virtio-9p
 DEFSHAREDFS_NEMU := virtio-fs
-DEFVIRTIOFSDAEMON := $(VIRTIOFSDBINDIR)/virtiofsd
+DEFVIRTIOFSDAEMON := $(VIRTIOFSDBINDIR)/virtiofsd-x86_64
 # Default DAX mapping cache size in MiB
-DEFVIRTIOFSCACHESIZE := 8192
+DEFVIRTIOFSCACHESIZE := 1024
 DEFVIRTIOFSCACHE := always
 DEFENABLEIOTHREADS := false
 DEFENABLEMEMPREALLOC := false
@@ -242,6 +242,9 @@ ifneq (,$(NEMUCMD))
     CONFIGS += $(CONFIG_NEMU)
 
     # nemu-specific options (all should be suffixed by "_NEMU")
+    # currently, huge pages are required for virtiofsd support
+    DEFENABLEHUGEPAGES_NEMU := true
+    # nemu uses virt machine type
     DEFMACHINEACCELERATOR_NEMU := virt
     DEFBLOCKSTORAGEDRIVER_NEMU := virtio-scsi
     DEFNETWORKMODEL_NEMU := tcfilter
@@ -373,6 +376,7 @@ USER_VARS += DEFVIRTIOFSCACHE
 USER_VARS += DEFENABLEIOTHREADS
 USER_VARS += DEFENABLEMEMPREALLOC
 USER_VARS += DEFENABLEHUGEPAGES
+USER_VARS += DEFENABLEHUGEPAGES_NEMU
 USER_VARS += DEFENABLESWAP
 USER_VARS += DEFENABLEDEBUG
 USER_VARS += DEFDISABLENESTINGCHECKS
@@ -520,6 +524,7 @@ $(GENERATED_FILES): %: %.in $(MAKEFILE_LIST) VERSION .git-commit
 		-e "s|@DEFENABLEIOTHREADS@|$(DEFENABLEIOTHREADS)|g" \
 		-e "s|@DEFENABLEMEMPREALLOC@|$(DEFENABLEMEMPREALLOC)|g" \
 		-e "s|@DEFENABLEHUGEPAGES@|$(DEFENABLEHUGEPAGES)|g" \
+		-e "s|@DEFENABLEHUGEPAGES_NEMU@|$(DEFENABLEHUGEPAGES_NEMU)|g" \
 		-e "s|@DEFENABLEMSWAP@|$(DEFENABLESWAP)|g" \
 		-e "s|@DEFENABLEDEBUG@|$(DEFENABLEDEBUG)|g" \
 		-e "s|@DEFDISABLENESTINGCHECKS@|$(DEFDISABLENESTINGCHECKS)|g" \

cli/config/configuration-nemu.toml.in

@@ -10,7 +10,8 @@
 # XXX:   Name: @PROJECT_NAME@
 # XXX:   Type: @PROJECT_TYPE@
 
-[hypervisor.nemu]
+# nemu utilizes the 'qemu' hypervisor template type, since it closely matches qemu
+[hypervisor.qemu]
 path = "@NEMUPATH@"
 kernel = "@KERNELPATH@"
 image = "@IMAGEPATH@"
@@ -96,8 +97,8 @@ default_memory = @DEFMEMSZ@
 disable_block_device_use = @DEFDISABLEBLOCK@
 
 # Shared file system type:
-#   - virtio-9p (default)
-#   - virtio-fs
+#   - virtio-fs (default)
+#   - virtio-9p
 shared_fs = "@DEFSHAREDFS_NEMU@"
 
 # Path to vhost-user-fs daemon.
@@ -161,7 +162,7 @@ enable_iothreads = @DEFENABLEIOTHREADS@
 # This is useful when you want to use vhost-user network
 # stacks within the container. This will automatically 
 # result in memory pre allocation
-#enable_hugepages = true
+enable_hugepages = @DEFENABLEHUGEPAGES_NEMU@
 
 # Enable swap of vm memory. Default false.
 # The behaviour is undefined if mem_prealloc is also set to true
@@ -187,7 +188,7 @@ enable_iothreads = @DEFENABLEIOTHREADS@
 # If true and vsocks are supported, use vsocks to communicate directly
 # with the agent (no proxy is started).
 # Default true
-use_vsock = true
+#use_vsock = true
 
 # VFIO devices are hotplugged on a bridge by default. 
 # Enable hotplugging on root bus. This may be required for devices with
@@ -272,6 +273,11 @@ use_vsock = true
 #vm_cache_endpoint = "/var/run/kata-containers/cache.sock"
 
 [proxy.@PROJECT_TYPE@]
+path = "@PROXYPATH@"
+
+# If enabled, proxy messages will be sent to the system log
+# (default: disabled)
+#enable_debug = true
 
 [shim.@PROJECT_TYPE@]
 path = "@SHIMPATH@"