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Kernel: If a VMObject is shared, broadcast page remappings

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If we remap pages (e.g. lazy allocation) inside a VMObject that is
shared among more than one region, broadcast it to any other region
that may be mapping the same page.
This commit is contained in:
Tom 2021-01-02 12:03:14 -07:00 • committed by Andreas Kling
parent e3190bd144
commit c630669304
5 changed files with 117 additions and 18 deletions
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2
Kernel/VM/AnonymousVMObject.cpp
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@ -215,7 +215,7 @@ int AnonymousVMObject::purge_impl()
} else {
klog() << "Purged " << purged_in_range << " pages from region " << region.name() << " (no ownership) at " << region.vaddr_from_page_index(range.base) << " - " << region.vaddr_from_page_index(range.base + range.count);
}
region.remap_page_range(range.base, range.count);
region.remap_vmobject_page_range(range.base, range.count);
}
});
}