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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>
This commit is contained in:
Avi Kivity 2012-02-08 17:01:23 +02:00
parent 80a1ea3748
commit 7a8499e88b
2 changed files with 7 additions and 0 deletions
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5
memory.c
View File

@ -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);
}

2
memory.h
View File

@ -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;