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memory: make section size a 128-bit integer

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So far, the size of all regions passed to listeners could fit in 64 bits,
because artificial regions (containers and aliases) are eliminated by
the memory core, leaving only device regions which have reasonable sizes

An IOMMU however cannot be eliminated by the memory core, and may have
an artificial size, hence we may need 65 bits to represent its size.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2013-05-27 10:08:27 +02:00
parent 733d5ef527
commit 052e87b073
15 changed files with 85 additions and 52 deletions
Download patch file Download diff file Expand all files Collapse all files

2
hw/virtio/dataplane/hostmem.c
View file

@ -90,7 +90,7 @@ static void hostmem_append_new_region(HostMem *hostmem,
hostmem->new_regions[num] = (HostMemRegion){
.host_addr = ram_ptr + section->offset_within_region,
.guest_addr = section->offset_within_address_space,
.size = section->size,
.size = int128_get64(section->size),
.readonly = section->readonly,
};
hostmem->num_new_regions++;

4
hw/virtio/vhost.c
View file

@ -81,7 +81,7 @@ static int vhost_sync_dirty_bitmap(struct vhost_dev *dev,
return 0;
}
start_addr = section->offset_within_address_space;
end_addr = range_get_last(start_addr, section->size);
end_addr = range_get_last(start_addr, int128_get64(section->size));
start_addr = MAX(first, start_addr);
end_addr = MIN(last, end_addr);
@ -379,7 +379,7 @@ static void vhost_set_memory(MemoryListener *listener,
struct vhost_dev *dev = container_of(listener, struct vhost_dev,
memory_listener);
hwaddr start_addr = section->offset_within_address_space;
ram_addr_t size = section->size;
ram_addr_t size = int128_get64(section->size);
bool log_dirty = memory_region_is_logging(section->mr);
int s = offsetof(struct vhost_memory, regions) +
(dev->mem->nregions + 1) * sizeof dev->mem->regions[0];

2
hw/virtio/virtio-balloon.c
View file

@ -197,7 +197,7 @@ static void virtio_balloon_handle_output(VirtIODevice *vdev, VirtQueue *vq)
/* FIXME: remove get_system_memory(), but how? */
section = memory_region_find(get_system_memory(), pa, 1);
if (!section.size || !memory_region_is_ram(section.mr))
if (!int128_nz(section.size) || !memory_region_is_ram(section.mr))
continue;
/* Using memory_region_get_ram_ptr is bending the rules a bit, but