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util: vfio-helpers: Factor out and fix processing of existing ram blocks

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Factor it out into common code when a new notifier is registered, just
as done with the memory region notifier. This keeps logic about how to
process existing ram blocks at a central place.

Just like when adding a new ram block, we have to register the max_length.
Ram blocks are only "fake resized". All memory (max_length) is mapped.

Print the warning from inside qemu_vfio_ram_block_added().

Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210429112708.12291-2-david@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
David Hildenbrand 2021-04-29 13:26:59 +02:00 • committed by Dr. David Alan Gilbert
parent 372043f389
commit 082851a3af
4 changed files with 28 additions and 21 deletions
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5
softmmu/physmem.c
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@ -1694,6 +1694,11 @@ ram_addr_t qemu_ram_get_used_length(RAMBlock *rb)
return rb->used_length;
}
ram_addr_t qemu_ram_get_max_length(RAMBlock *rb)
{
return rb->max_length;
}
bool qemu_ram_is_shared(RAMBlock *rb)
{
return rb->flags & RAM_SHARED;