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[Qemu-devel] [RESEND2 PATCH] exec: Implement qemu_ram_free_from_ptr()
From: |
Alex Williamson |
Subject: |
[Qemu-devel] [RESEND2 PATCH] exec: Implement qemu_ram_free_from_ptr() |
Date: |
Tue, 03 May 2011 12:48:09 -0600 |
User-agent: |
StGIT/0.14.3 |
Required for regions mapped via qemu_ram_alloc_from_ptr(). VFIO
and ivshmem will make use of this to remove mappings when devices
are hot unplugged.
Signed-off-by: Alex Williamson <address@hidden>
---
Trying to clean out my patch queuer;, I've proposed this twice, Cam
has proposed this once, it's an obvious missing interface. Please
apply.
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 96c02ae..db98b6b 100644
--- a/cpu-common.h
+++ b/cpu-common.h
@@ -50,6 +50,7 @@ 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(ram_addr_t addr);
+void qemu_ram_free_from_ptr(ram_addr_t addr);
void qemu_ram_remap(ram_addr_t addr, ram_addr_t length);
/* 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 a0678a4..1870ee7 100644
--- a/exec.c
+++ b/exec.c
@@ -2954,6 +2954,19 @@ 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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