[Qemu-devel] [PATCH 13/40] memory: Introduce address_space_lookup_region

[Paolo Bonzini]

From: Jan Kiszka <address@hidden>

This introduces a wrapper for phys_page_find (before we complicate
address_space_translate with IOMMU translation).  This function will
also encapsulate locking and reference counting when we introduce
BQL-free dispatching.

Signed-off-by: Jan Kiszka <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
 exec.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/exec.c b/exec.c
index 9709bc4..6efad6d 100644
--- a/exec.c
+++ b/exec.c
@@ -198,13 +198,19 @@ static MemoryRegionSection 
*phys_page_find(AddressSpaceDispatch *d, hwaddr index
     return &phys_sections[lp.ptr];
 }
 
+static MemoryRegionSection *address_space_lookup_region(AddressSpace *as,
+                                                        hwaddr addr)
+{
+    return phys_page_find(as->dispatch, addr >> TARGET_PAGE_BITS);
+}
+
 MemoryRegionSection *address_space_translate(AddressSpace *as, hwaddr addr,
                                              hwaddr *xlat, hwaddr *plen,
                                              bool is_write)
 {
     MemoryRegionSection *section;
 
-    section = phys_page_find(as->dispatch, addr >> TARGET_PAGE_BITS);
+    section = address_space_lookup_region(as, addr);
     /* Compute offset with MemoryRegionSection */
     addr -= section->offset_within_address_space;
     *plen = MIN(section->size - addr, *plen);
-- 
1.7.1