Priority is used to make visible some subregions by obscuring
the parent MemoryRegion addresses overlapping with the subregion.
By allowing the priority to be negative the opposite can be done:
Allow a subregion to be visible on all the addresses not covered
by the parent MemoryRegion or other subregions.
Signed-off-by: Marcel Apfelbaum <marce...@redhat.com>
---
include/exec/memory.h | 6 +++---
memory.c | 2 +-
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/include/exec/memory.h b/include/exec/memory.h
index ebe0d24..6995087 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -153,7 +153,7 @@ struct MemoryRegion {
bool flush_coalesced_mmio;
MemoryRegion *alias;
hwaddr alias_offset;
- unsigned priority;
+ int priority;
bool may_overlap;
QTAILQ_HEAD(subregions, MemoryRegion) subregions;
QTAILQ_ENTRY(MemoryRegion) subregions_link;
@@ -193,7 +193,7 @@ struct MemoryListener {
void (*coalesced_mmio_del)(MemoryListener *listener, MemoryRegionSection
*section,
hwaddr addr, hwaddr len);
/* Lower = earlier (during add), later (during del) */
- unsigned priority;
+ int priority;
AddressSpace *address_space_filter;
QTAILQ_ENTRY(MemoryListener) link;
};
@@ -779,7 +779,7 @@ void memory_region_add_subregion(MemoryRegion *mr,
void memory_region_add_subregion_overlap(MemoryRegion *mr,
hwaddr offset,
MemoryRegion *subregion,
- unsigned priority);
+ int priority);
/**
* memory_region_get_ram_addr: Get the ram address associated with a memory
diff --git a/memory.c b/memory.c
index 886f838..dfb3ae6 100644
--- a/memory.c
+++ b/memory.c
@@ -1473,7 +1473,7 @@ void memory_region_add_subregion(MemoryRegion *mr,
void memory_region_add_subregion_overlap(MemoryRegion *mr,
hwaddr offset,
MemoryRegion *subregion,
- unsigned priority)
+ int priority)
{
subregion->may_overlap = true;
subregion->priority = priority;
--
1.8.3.1
