system/ramblock: Move ram_block_discard_*_range() declarations

Keep RAM blocks API in the same header: "system/ramblock.h".

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Peter Xu <peterx@redhat.com>
Message-Id: <20251002032812.26069-4-philmd@linaro.org>

accel/kvm/kvm-all.c

@@ -32,6 +32,7 @@
 #include "system/runstate.h"
 #include "system/cpus.h"
 #include "system/accel-blocker.h"
+#include "system/ramblock.h"
 #include "accel/accel-ops.h"
 #include "qemu/bswap.h"
 #include "exec/tswap.h"

hw/hyperv/hv-balloon-our_range_memslots.c

@@ -8,6 +8,7 @@
  */
 
 #include "qemu/osdep.h"
+#include "system/ramblock.h"
 #include "hv-balloon-internal.h"
 #include "hv-balloon-our_range_memslots.h"
 #include "trace.h"

hw/virtio/virtio-balloon.c

@@ -23,6 +23,7 @@
 #include "hw/qdev-properties.h"
 #include "hw/boards.h"
 #include "system/balloon.h"
+#include "system/ramblock.h"
 #include "hw/virtio/virtio-balloon.h"
 #include "system/address-spaces.h"
 #include "qapi/error.h"

hw/virtio/virtio-mem.c

@@ -17,6 +17,7 @@
 #include "qemu/units.h"
 #include "system/numa.h"
 #include "system/system.h"
+#include "system/ramblock.h"
 #include "system/reset.h"
 #include "system/runstate.h"
 #include "hw/virtio/virtio.h"

include/exec/cpu-common.h

@@ -163,9 +163,6 @@ void cpu_flush_icache_range(hwaddr start, hwaddr len);
 typedef int (RAMBlockIterFunc)(RAMBlock *rb, void *opaque);
 
 int qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque);
-int ram_block_discard_range(RAMBlock *rb, uint64_t start, size_t length);
-int ram_block_discard_guest_memfd_range(RAMBlock *rb, uint64_t start,
-                                        size_t length);
 
 /* Returns: 0 on success, -1 on error */
 int cpu_memory_rw_debug(CPUState *cpu, vaddr addr,

include/system/ramblock.h

@@ -103,6 +103,10 @@ struct RamBlockAttributes {
     QLIST_HEAD(, RamDiscardListener) rdl_list;
 };
 
+int ram_block_discard_range(RAMBlock *rb, uint64_t start, size_t length);
+int ram_block_discard_guest_memfd_range(RAMBlock *rb, uint64_t start,
+                                        size_t length);
+
 RamBlockAttributes *ram_block_attributes_create(RAMBlock *ram_block);
 void ram_block_attributes_destroy(RamBlockAttributes *attr);
 int ram_block_attributes_state_change(RamBlockAttributes *attr, uint64_t offset,