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vfio/listener: Add an assertion for unmap_all

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Currently the maximum of iommu address space is 64bit. So when a maximum
iommu memory section is deleted, it's in scope [0, 2^64). Add a
assertion for that.

Suggested-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20251009040134.334251-4-zhenzhong.duan@intel.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
This commit is contained in:
Zhenzhong Duan 2025-10-09 00:01:34 -04:00 • committed by Cédric Le Goater
parent b30823e561
commit 271fec6f18
1 changed files with 1 additions and 0 deletions
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hw/vfio/listener.c
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@ -715,6 +715,7 @@ static void vfio_listener_region_del(MemoryListener *listener,
bool unmap_all = false;
if (int128_eq(llsize, int128_2_64())) {
assert(!iova);
unmap_all = true;
llsize = int128_zero();
}