From: Alexander Bulekov <alxndr@bu.edu>
Date: Fri, 23 Oct 2020 15:07:30 +0000 (-0400)
Subject: memory: Add FlatView foreach function
X-Git-Tag: v5.2.0-rc0~36^2~22
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=fb5ef4eeecd88b583d5a6dc8f7dc217179cbfc98;p=thirdparty%2Fqemu.git

memory: Add FlatView foreach function

Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Message-Id: <20201023150746.107063-2-alxndr@bu.edu>
Signed-off-by: Thomas Huth <thuth@redhat.com>
---

diff --git a/include/exec/memory.h b/include/exec/memory.h
index 622207bde12..042918dd16f 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -719,6 +719,11 @@ static inline FlatView *address_space_to_flatview(AddressSpace *as)
     return qatomic_rcu_read(&as->current_map);
 }
 
+typedef int (*flatview_cb)(Int128 start,
+                           Int128 len,
+                           const MemoryRegion*, void*);
+
+void flatview_for_each_range(FlatView *fv, flatview_cb cb , void *opaque);
 
 /**
  * struct MemoryRegionSection: describes a fragment of a #MemoryRegion
diff --git a/softmmu/memory.c b/softmmu/memory.c
index 403ff3abc99..a5d1641820d 100644
--- a/softmmu/memory.c
+++ b/softmmu/memory.c
@@ -656,6 +656,19 @@ static void render_memory_region(FlatView *view,
     }
 }
 
+void flatview_for_each_range(FlatView *fv, flatview_cb cb , void *opaque)
+{
+    FlatRange *fr;
+
+    assert(fv);
+    assert(cb);
+
+    FOR_EACH_FLAT_RANGE(fr, fv) {
+        if (cb(fr->addr.start, fr->addr.size, fr->mr, opaque))
+            break;
+    }
+}
+
 static MemoryRegion *memory_region_get_flatview_root(MemoryRegion *mr)
 {
     while (mr->enabled) {