Decoupling memory-backend and hugepage

Memory: Add a new parameter "vm_mem_backend_path", this will controls the "mem-path" in memory object and will be replaced by hugepage_path Signed-off-by: Boqiao Fu <[email protected]>
avocado-framework · Jul 11, 2023 · d78be0d · d78be0d
1 parent 6dbcb4b
commit d78be0d
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diff --git a/virttest/qemu_vm.py b/virttest/qemu_vm.py
@@ -1055,6 +1055,13 @@ def add_memorys(devices, params):
                 backend_options["size_mem"] = "%sM" % params["mem"]
                 if params.get("vm_mem_backend"):
                     backend_options["backend_mem"] = params.get("vm_mem_backend")
+                if params.get("vm_mem_backend") == "memory-backend-file":
+                    if not params.get("vm_mem_backend_path"):
+                        raise virt_vm.VMConfigMissingError(name,
+                                                           'vm_mem_backend_path')
+                    else:
+                        backend_options["mem-path_mem"] = params[
+                            "vm_mem_backend_path"]
                 if params.get("hugepage_path"):
                     backend_options["backend_mem"] = "memory-backend-file"
                     backend_options["mem-path_mem"] = params["hugepage_path"]

diff --git a/virttest/shared/cfg/base.cfg b/virttest/shared/cfg/base.cfg
@@ -255,6 +255,10 @@ mem = 1024
 # Pattern for check memory size inside guest
 mem_chk_re_str = ([0-9]+)
 
+# this parameter controls the value of "mem-path" in memory-backend object
+# it will be replaced by "hugepage_path"
+# vm_mem_backend_path = /dev/shm
+
 # To configure guest backed by hugepages, set it to "yes"
 # hugepage = "no"