Required for regions mapped via qemu_ram_alloc_from_ptr(). VFIO
will make use of this to remove mappings when devices are hot
unplugged. (Current callers of qemu_ram_alloc_from_ptr() should
probably need this too)
Signed-off-by: Alex Williamson <alex.williamson@xxxxxxxxxx>
---
cpu-common.h | 1 +
exec.c | 13 +++++++++++++
2 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/cpu-common.h b/cpu-common.h
index a543b5d..8a3d1da 100644
--- a/cpu-common.h
+++ b/cpu-common.h
@@ -43,6 +43,7 @@ ram_addr_t cpu_get_physical_page_desc(target_phys_addr_t addr);
ram_addr_t qemu_ram_alloc_from_ptr(DeviceState *dev, const char *name,
ram_addr_t size, void *host);
ram_addr_t qemu_ram_alloc(DeviceState *dev, const char *name, ram_addr_t size);
+void qemu_ram_free_from_ptr(ram_addr_t addr);
void qemu_ram_free(ram_addr_t addr);
/* This should only be used for ram local to a device. */
void *qemu_get_ram_ptr(ram_addr_t addr);
diff --git a/exec.c b/exec.c
index 631d8c5..2b3b9ba 100644
--- a/exec.c
+++ b/exec.c
@@ -2882,6 +2882,19 @@ ram_addr_t qemu_ram_alloc(DeviceState *dev, const char *name, ram_addr_t size)
return qemu_ram_alloc_from_ptr(dev, name, size, NULL);
}
+void qemu_ram_free_from_ptr(ram_addr_t addr)
+{
+ RAMBlock *block;
+
+ QLIST_FOREACH(block, &ram_list.blocks, next) {
+ if (addr == block->offset) {
+ QLIST_REMOVE(block, next);
+ qemu_free(block);
+ return;
+ }
+ }
+}
+
void qemu_ram_free(ram_addr_t addr)
{
RAMBlock *block;
--
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