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util: Make some iova_tree parameters const

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As qemu guidelines:
Unless a pointer is used to modify the pointed-to storage, give it the
"const" attribute.

In the particular case of iova_tree_find it allows to enforce what is
requested by its comment, since the compiler would shout in case of
modifying or freeing the const-qualified returned pointer.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211013182713.888753-2-eperezma@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Eugenio Pérez 2021-10-13 20:27:13 +02:00 • committed by Paolo Bonzini
parent 9840999112
commit a89b34be5e
3 changed files with 11 additions and 11 deletions
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2
hw/i386/intel_iommu.c
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@ -1105,7 +1105,7 @@ static int vtd_page_walk_one(IOMMUTLBEvent *event, vtd_page_walk_info *info)
.translated_addr = entry->translated_addr,
.perm = entry->perm,
};
DMAMap *mapped = iova_tree_find(as->iova_tree, &target);
const DMAMap *mapped = iova_tree_find(as->iova_tree, &target);
if (event->type == IOMMU_NOTIFIER_UNMAP && !info->notify_unmap) {
trace_vtd_page_walk_one_skip_unmap(entry->iova, entry->addr_mask);