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virtio-mem: generalize virtio_mem_overlaps_range()

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Avoid using memory block ids. While at it, use uint64_t for
address/size.

This is a preparation for Big Block Mode (BBM).

Reviewed-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/r/20201112133815.13332-14-david@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
David Hildenbrand 2020-11-12 14:37:59 +01:00 committed by Michael S. Tsirkin
parent 8464e3bdf2
commit 835491c554
1 changed files with 3 additions and 7 deletions
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10
drivers/virtio/virtio_mem.c
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@ -501,14 +501,10 @@ static int virtio_mem_translate_node_id(struct virtio_mem *vm, uint16_t node_id)
* Test if a virtio-mem device overlaps with the given range. Can be called
* from (notifier) callbacks lockless.
*/
static bool virtio_mem_overlaps_range(struct virtio_mem *vm,
unsigned long start, unsigned long size)
static bool virtio_mem_overlaps_range(struct virtio_mem *vm, uint64_t start,
uint64_t size)
{
unsigned long dev_start = virtio_mem_mb_id_to_phys(vm->first_mb_id);
unsigned long dev_end = virtio_mem_mb_id_to_phys(vm->last_mb_id) +
memory_block_size_bytes();
return start < dev_end && dev_start < start + size;
return start < vm->addr + vm->region_size && vm->addr < start + size;
}
/*