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authorAvi Kivity <avi@redhat.com>2012-02-08 17:01:23 +0200
committerAvi Kivity <avi@redhat.com>2012-02-29 13:44:41 +0200
commit7a8499e88bffff66d90300d4f2018c938543b1cf (patch)
tree122dff224622832fc30fd57608d43f536542f8f7
parent80a1ea3748203b840d8bad488ada4d6f5bb66c9d (diff)
memory: add a readonly attribute to MemoryRegionSection
.readonly cannot be obtained from the MemoryRegion, since it is inherited from aliases (so you can have a MemoryRegion mapped RW at one address and RO at another). Record it in a MemoryRegionSection for listeners. Signed-off-by: Avi Kivity <avi@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net>
-rw-r--r--memory.c5
-rw-r--r--memory.h2
2 files changed, 7 insertions, 0 deletions
diff --git a/memory.c b/memory.c
index a73c5a7..ccc3efb 100644
--- a/memory.c
+++ b/memory.c
@@ -112,6 +112,7 @@ enum ListenerDirection { Forward, Reverse };
.offset_within_region = (fr)->offset_in_region, \
.size = int128_get64((fr)->addr.size), \
.offset_within_address_space = int128_get64((fr)->addr.start), \
+ .readonly = (fr)->readonly, \
})
struct CoalescedMemoryRange {
@@ -342,6 +343,7 @@ static void as_memory_range_add(AddressSpace *as, FlatRange *fr)
.offset_within_address_space = int128_get64(fr->addr.start),
.offset_within_region = fr->offset_in_region,
.size = int128_get64(fr->addr.size),
+ .readonly = fr->readonly,
};
cpu_register_physical_memory_log(&section, fr->readable, fr->readonly);
@@ -354,6 +356,7 @@ static void as_memory_range_del(AddressSpace *as, FlatRange *fr)
.offset_within_address_space = int128_get64(fr->addr.start),
.offset_within_region = int128_get64(fr->addr.start),
.size = int128_get64(fr->addr.size),
+ .readonly = fr->readonly,
};
cpu_register_physical_memory_log(&section, true, false);
@@ -1437,6 +1440,7 @@ MemoryRegionSection memory_region_find(MemoryRegion *address_space,
fr->addr.start));
ret.size = int128_get64(range.size);
ret.offset_within_address_space = int128_get64(range.start);
+ ret.readonly = fr->readonly;
return ret;
}
@@ -1479,6 +1483,7 @@ static void listener_add_address_space(MemoryListener *listener,
.offset_within_region = fr->offset_in_region,
.size = int128_get64(fr->addr.size),
.offset_within_address_space = int128_get64(fr->addr.start),
+ .readonly = fr->readonly,
};
listener->region_add(listener, &section);
}
diff --git a/memory.h b/memory.h
index 84bb67c..1d99cee 100644
--- a/memory.h
+++ b/memory.h
@@ -160,6 +160,7 @@ typedef struct MemoryRegionSection MemoryRegionSection;
* @size: the size of the section; will not exceed @mr's boundaries
* @offset_within_address_space: the address of the first byte of the section
* relative to the region's address space
+ * @readonly: writes to this section are ignored
*/
struct MemoryRegionSection {
MemoryRegion *mr;
@@ -167,6 +168,7 @@ struct MemoryRegionSection {
target_phys_addr_t offset_within_region;
uint64_t size;
target_phys_addr_t offset_within_address_space;
+ bool readonly;
};
typedef struct MemoryListener MemoryListener;