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memory: use mr->ram_addr in "is this RAM?" assertions

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mr->terminates alone doesn't guarantee that we are looking at a RAM region.
mr->ram_addr also has to be checked, in order to distinguish RAM and I/O
regions.

So, do the following:

1) add a new define RAM_ADDR_INVALID, and test it in the assertions
instead of mr->terminates

2) IOMMU regions were not setting mr->ram_addr to a bogus value, initialize
it in the instance_init function so that the new assertions would fire
for IOMMU regions as well.

Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2015-03-29 09:31:43 +02:00
parent 5f2cb94688
commit ec05ec26f9
1 changed files with 10 additions and 8 deletions
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18
memory.c
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@ -28,6 +28,8 @@
//#define DEBUG_UNASSIGNED
#define RAM_ADDR_INVALID (~(ram_addr_t)0)
static unsigned memory_region_transaction_depth;
static bool memory_region_update_pending;
static bool ioeventfd_update_pending;
@ -1007,6 +1009,7 @@ static void memory_region_initfn(Object *obj)
ObjectProperty *op;
mr->ops = &unassigned_mem_ops;
mr->ram_addr = RAM_ADDR_INVALID;
mr->enabled = true;
mr->romd_mode = true;
mr->destructor = memory_region_destructor_none;
@ -1198,7 +1201,6 @@ void memory_region_init_io(MemoryRegion *mr,
mr->ops = ops;
mr->opaque = opaque;
mr->terminates = true;
mr->ram_addr = ~(ram_addr_t)0;
}
void memory_region_init_ram(MemoryRegion *mr,
@ -1453,14 +1455,14 @@ void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client)
bool memory_region_get_dirty(MemoryRegion *mr, hwaddr addr,
hwaddr size, unsigned client)
{
assert(mr->terminates);
assert(mr->ram_addr != RAM_ADDR_INVALID);
return cpu_physical_memory_get_dirty(mr->ram_addr + addr, size, client);
}
void memory_region_set_dirty(MemoryRegion *mr, hwaddr addr,
hwaddr size)
{
assert(mr->terminates);
assert(mr->ram_addr != RAM_ADDR_INVALID);
cpu_physical_memory_set_dirty_range(mr->ram_addr + addr, size,
memory_region_get_dirty_log_mask(mr));
}
@ -1468,7 +1470,7 @@ void memory_region_set_dirty(MemoryRegion *mr, hwaddr addr,
bool memory_region_test_and_clear_dirty(MemoryRegion *mr, hwaddr addr,
hwaddr size, unsigned client)
{
assert(mr->terminates);
assert(mr->ram_addr != RAM_ADDR_INVALID);
return cpu_physical_memory_test_and_clear_dirty(mr->ram_addr + addr,
size, client);
}
@ -1513,7 +1515,7 @@ void memory_region_rom_device_set_romd(MemoryRegion *mr, bool romd_mode)
void memory_region_reset_dirty(MemoryRegion *mr, hwaddr addr,
hwaddr size, unsigned client)
{
assert(mr->terminates);
assert(mr->ram_addr != RAM_ADDR_INVALID);
cpu_physical_memory_test_and_clear_dirty(mr->ram_addr + addr, size,
client);
}
@ -1524,7 +1526,7 @@ int memory_region_get_fd(MemoryRegion *mr)
return memory_region_get_fd(mr->alias);
}
assert(mr->terminates);
assert(mr->ram_addr != RAM_ADDR_INVALID);
return qemu_get_ram_fd(mr->ram_addr & TARGET_PAGE_MASK);
}
@ -1535,14 +1537,14 @@ void *memory_region_get_ram_ptr(MemoryRegion *mr)
return memory_region_get_ram_ptr(mr->alias) + mr->alias_offset;
}
assert(mr->terminates);
assert(mr->ram_addr != RAM_ADDR_INVALID);
return qemu_get_ram_ptr(mr->ram_addr & TARGET_PAGE_MASK);
}
void memory_region_ram_resize(MemoryRegion *mr, ram_addr_t newsize, Error **errp)
{
assert(mr->terminates);
assert(mr->ram_addr != RAM_ADDR_INVALID);
qemu_ram_resize(mr->ram_addr, newsize, errp);
}