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[Qemu-devel] [PATCH 2/2] memory-backend: Add can_be_deleted impl for ram
From: |
Lin Ma |
Subject: |
[Qemu-devel] [PATCH 2/2] memory-backend: Add can_be_deleted impl for ram-backend and file-backend |
Date: |
Mon, 23 Mar 2015 18:10:42 +0800 |
The can_be_deleted callback returns false if the backend is in used,
Otherwise returns true.
Signed-off-by: Lin Ma <address@hidden>
---
backends/hostmem-file.c | 12 ++++++++++++
backends/hostmem-ram.c | 12 ++++++++++++
2 files changed, 24 insertions(+)
diff --git a/backends/hostmem-file.c b/backends/hostmem-file.c
index 5179994..33ad8e7 100644
--- a/backends/hostmem-file.c
+++ b/backends/hostmem-file.c
@@ -118,10 +118,22 @@ file_backend_instance_init(Object *o)
set_mem_path, NULL);
}
+static bool
+file_backend_can_be_deleted(Object *obj)
+{
+ MemoryRegion *mr;
+ mr = host_memory_backend_get_memory(MEMORY_BACKEND(obj), &error_abort);
+ if (memory_region_is_mapped(mr))
+ return false;
+ else
+ return true;
+}
+
static const TypeInfo file_backend_info = {
.name = TYPE_MEMORY_BACKEND_FILE,
.parent = TYPE_MEMORY_BACKEND,
.class_init = file_backend_class_init,
+ .can_be_deleted = file_backend_can_be_deleted,
.instance_init = file_backend_instance_init,
.instance_size = sizeof(HostMemoryBackendFile),
};
diff --git a/backends/hostmem-ram.c b/backends/hostmem-ram.c
index a67a134..8724ad1 100644
--- a/backends/hostmem-ram.c
+++ b/backends/hostmem-ram.c
@@ -39,10 +39,22 @@ ram_backend_class_init(ObjectClass *oc, void *data)
bc->alloc = ram_backend_memory_alloc;
}
+static bool
+ram_backend_can_be_deleted(Object *obj)
+{
+ MemoryRegion *mr;
+ mr = host_memory_backend_get_memory(MEMORY_BACKEND(obj), &error_abort);
+ if (memory_region_is_mapped(mr))
+ return false;
+ else
+ return true;
+}
+
static const TypeInfo ram_backend_info = {
.name = TYPE_MEMORY_BACKEND_RAM,
.parent = TYPE_MEMORY_BACKEND,
.class_init = ram_backend_class_init,
+ .can_be_deleted = ram_backend_can_be_deleted,
};
static void register_types(void)
--
2.1.4
- [Qemu-devel] [PATCH 1/2] object: Add can_be_deleted callback to TypeInfo and TypeImpl, Lin Ma, 2015/03/23
- [Qemu-devel] [PATCH 2/2] memory-backend: Add can_be_deleted impl for ram-backend and file-backend,
Lin Ma <=
- Re: [Qemu-devel] [PATCH 1/2] object: Add can_be_deleted callback to TypeInfo and TypeImpl, Peter Crosthwaite, 2015/03/23
- Re: [Qemu-devel] [PATCH 1/2] object: Add can_be_deleted callback to TypeInfo and TypeImpl, Paolo Bonzini, 2015/03/23
- Re: [Qemu-devel] [PATCH 1/2] object: Add can_be_deleted callback to TypeInfo and TypeImpl, Andreas Färber, 2015/03/23
- Re: [Qemu-devel] [PATCH 1/2] object: Add can_be_deleted callback to TypeInfo and TypeImpl, Igor Mammedov, 2015/03/23
- Re: [Qemu-devel] [PATCH 1/2] object: Add can_be_deleted callback to TypeInfo and TypeImpl, Lin Ma, 2015/03/25
- Re: [Qemu-devel] [PATCH 1/2] object: Add can_be_deleted callback to TypeInfo and TypeImpl, Igor Mammedov, 2015/03/26
- Re: [Qemu-devel] [PATCH 1/2] object: Add can_be_deleted callback to TypeInfo and TypeImpl, Andreas Färber, 2015/03/26
- Re: [Qemu-devel] [PATCH 1/2] object: Add can_be_deleted callback to TypeInfo and TypeImpl, Igor Mammedov, 2015/03/26
- Re: [Qemu-devel] [PATCH 1/2] object: Add can_be_deleted callback to TypeInfo and TypeImpl, Paolo Bonzini, 2015/03/26
- Re: [Qemu-devel] [PATCH 1/2] object: Add can_be_deleted callback to TypeInfo and TypeImpl, Igor Mammedov, 2015/03/26