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authorSteve Sistare <steven.sistare@oracle.com>2025-01-15 11:00:31 -0800
committerFabiano Rosas <farosas@suse.de>2025-01-29 11:43:04 -0300
commit6169f1193657d0ba630a2ce33cef639ae918bce4 (patch)
tree33fd65ef73cb97e0b000bcb75e024b5a5d9226af /backends/hostmem-file.c
parent9fb40bb9621df9acb88a8128bee2e0f68631b245 (diff)
downloadfocaccia-qemu-6169f1193657d0ba630a2ce33cef639ae918bce4.tar.gz
focaccia-qemu-6169f1193657d0ba630a2ce33cef639ae918bce4.zip
memory: add RAM_PRIVATE
Define the RAM_PRIVATE flag.

In RAMBlock creation functions, if MAP_SHARED is 0 in the flags parameter,
in a subsequent patch the implementation may still create a shared mapping
if other conditions require it.  Callers who specifically want a private
mapping, eg for objects specified by the user, must pass RAM_PRIVATE.

After RAMBlock creation, MAP_SHARED in the block's flags indicates whether
the block is shared or private, and MAP_PRIVATE is omitted.

Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Link: https://lore.kernel.org/r/1736967650-129648-6-git-send-email-steven.sistare@oracle.com
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Diffstat (limited to 'backends/hostmem-file.c')
-rw-r--r--backends/hostmem-file.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/backends/hostmem-file.c b/backends/hostmem-file.c
index 46321fda84..691a827819 100644
--- a/backends/hostmem-file.c
+++ b/backends/hostmem-file.c
@@ -82,7 +82,7 @@ file_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)
 
     backend->aligned = true;
     name = host_memory_backend_get_name(backend);
-    ram_flags = backend->share ? RAM_SHARED : 0;
+    ram_flags = backend->share ? RAM_SHARED : RAM_PRIVATE;
     ram_flags |= fb->readonly ? RAM_READONLY_FD : 0;
     ram_flags |= fb->rom == ON_OFF_AUTO_ON ? RAM_READONLY : 0;
     ram_flags |= backend->reserve ? 0 : RAM_NORESERVE;