[Xen-changelog] [qemu-xen stable-4.10] memory: Remove AddressSpace pointer from AddressSpaceDispatch

[patchbot@xxxxxxx]

commit d0136db81292ccac38a74b4ef2d3c3853b7c1355
Author:     Alexey Kardashevskiy <aik@xxxxxxxxx>
AuthorDate: Thu Sep 21 18:50:57 2017 +1000
Commit:     Michael Roth <mdroth@xxxxxxxxxxxxxxxxxx>
CommitDate: Mon Dec 4 21:55:04 2017 -0600

    memory: Remove AddressSpace pointer from AddressSpaceDispatch
    
    AS in ASD is only used to pass AS from mem_begin() to register_subpage()
    to store it in MemoryRegionSection, we can do this directly now.
    
    This should cause no behavioural change.
    
    Signed-off-by: Alexey Kardashevskiy <aik@xxxxxxxxx>
    Message-Id: <20170921085110.25598-6-aik@xxxxxxxxx>
    Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
    (cherry picked from commit c7752523787dc148f5ee976162e80ab594c386a1)
    Signed-off-by: Michael Roth <mdroth@xxxxxxxxxxxxxxxxxx>
---
 exec.c | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/exec.c b/exec.c
index 6b0211b..3212c5e 100644
--- a/exec.c
+++ b/exec.c
@@ -194,7 +194,6 @@ struct AddressSpaceDispatch {
      */
     PhysPageEntry phys_map;
     PhysPageMap map;
-    AddressSpace *as;
 };
 
 #define SUBPAGE_IDX(addr) ((addr) & ~TARGET_PAGE_MASK)
@@ -1304,7 +1303,8 @@ static void phys_sections_free(PhysPageMap *map)
     g_free(map->nodes);
 }
 
-static void register_subpage(AddressSpaceDispatch *d, MemoryRegionSection 
*section)
+static void register_subpage(AddressSpace *as, AddressSpaceDispatch *d,
+                             MemoryRegionSection *section)
 {
     subpage_t *subpage;
     hwaddr base = section->offset_within_address_space
@@ -1319,8 +1319,8 @@ static void register_subpage(AddressSpaceDispatch *d, 
MemoryRegionSection *secti
     assert(existing->mr->subpage || existing->mr == &io_mem_unassigned);
 
     if (!(existing->mr->subpage)) {
-        subpage = subpage_init(d->as, base);
-        subsection.address_space = d->as;
+        subpage = subpage_init(as, base);
+        subsection.address_space = as;
         subsection.mr = &subpage->iomem;
         phys_page_set(d, base >> TARGET_PAGE_BITS, 1,
                       phys_section_add(&d->map, &subsection));
@@ -1357,7 +1357,7 @@ void mem_add(AddressSpace *as, FlatView *fv, 
MemoryRegionSection *section)
                        - now.offset_within_address_space;
 
         now.size = int128_min(int128_make64(left), now.size);
-        register_subpage(d, &now);
+        register_subpage(as, d, &now);
     } else {
         now.size = int128_zero();
     }
@@ -1367,10 +1367,10 @@ void mem_add(AddressSpace *as, FlatView *fv, 
MemoryRegionSection *section)
         remain.offset_within_region += int128_get64(now.size);
         now = remain;
         if (int128_lt(remain.size, page_size)) {
-            register_subpage(d, &now);
+            register_subpage(as, d, &now);
         } else if (remain.offset_within_address_space & ~TARGET_PAGE_MASK) {
             now.size = page_size;
-            register_subpage(d, &now);
+            register_subpage(as, d, &now);
         } else {
             now.size = int128_and(now.size, int128_neg(page_size));
             register_multipage(d, &now);
@@ -2686,7 +2686,6 @@ AddressSpaceDispatch *mem_begin(AddressSpace *as)
     assert(n == PHYS_SECTION_WATCH);
 
     d->phys_map  = (PhysPageEntry) { .ptr = PHYS_MAP_NODE_NIL, .skip = 1 };
-    d->as = as;
 
     return d;
 }
--
generated by git-patchbot for /home/xen/git/qemu-xen.git#stable-4.10

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