softmmu: Move dirtylimit.c into the target independent source set

dirtylimit.c just uses one TARGET_PAGE_SIZE macro - change it to
qemu_target_page_size() so we can move thefile into the target
independent source set. Then we only have to compile this file
once during the build instead of multiple times (one time for
each target).

Message-Id: <20230413054509.54421-1-thuth@redhat.com>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Signed-off-by: Thomas Huth <thuth@redhat.com>

softmmu/dirtylimit.c

@@ -20,6 +20,7 @@
 #include "monitor/hmp.h"
 #include "monitor/monitor.h"
 #include "exec/memory.h"
+#include "exec/target_page.h"
 #include "hw/boards.h"
 #include "sysemu/kvm.h"
 #include "trace.h"
@@ -236,7 +237,7 @@ static inline int64_t dirtylimit_dirty_ring_full_time(uint64_t dirtyrate)
     static uint64_t max_dirtyrate;
     uint32_t dirty_ring_size = kvm_dirty_ring_size();
     uint64_t dirty_ring_size_meory_MB =
-        dirty_ring_size * TARGET_PAGE_SIZE >> 20;
+        dirty_ring_size * qemu_target_page_size() >> 20;
 
     if (max_dirtyrate < dirtyrate) {
         max_dirtyrate = dirtyrate;

softmmu/meson.build

@@ -3,7 +3,6 @@ specific_ss.add(when: 'CONFIG_SOFTMMU', if_true: [files(
   'ioport.c',
   'memory.c',
   'physmem.c',
-  'dirtylimit.c',
   'watchpoint.c',
 )])
 
@@ -18,6 +17,7 @@ softmmu_ss.add(files(
   'cpu-throttle.c',
   'cpu-timers.c',
   'datadir.c',
+  'dirtylimit.c',
   'dma-helpers.c',
   'globals.c',
   'memory_mapping.c',