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Kernel: Add AnonymousVMObject constructor for a Vector of physical pages

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This will be used later on by the AHCI code to create a Region
that spans over scattered DMA pages.
This commit is contained in:
Liav A 2021-02-26 14:32:43 +02:00 • committed by Andreas Kling
parent e65fd83e23
commit ecb169b61e
4 changed files with 22 additions and 0 deletions
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14
Kernel/VM/AnonymousVMObject.cpp
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@ -81,6 +81,11 @@ RefPtr<AnonymousVMObject> AnonymousVMObject::create_with_size(size_t size, Alloc
return adopt(*new AnonymousVMObject(size, commit));
}
NonnullRefPtr<AnonymousVMObject> AnonymousVMObject::create_with_physical_pages(NonnullRefPtrVector<PhysicalPage> physical_pages)
{
return adopt(*new AnonymousVMObject(physical_pages));
}
NonnullRefPtr<AnonymousVMObject> AnonymousVMObject::create_with_physical_page(PhysicalPage& page)
{
return adopt(*new AnonymousVMObject(page));
@ -127,6 +132,15 @@ AnonymousVMObject::AnonymousVMObject(PhysicalPage& page)
physical_pages()[0] = page;
}
AnonymousVMObject::AnonymousVMObject(NonnullRefPtrVector<PhysicalPage> physical_pages)
: VMObject()
, m_volatile_ranges_cache({ 0, page_count() })
{
for (auto& page : physical_pages) {
m_physical_pages.append(page);
}
}
AnonymousVMObject::AnonymousVMObject(const AnonymousVMObject& other)
: VMObject(other)
, m_volatile_ranges_cache({ 0, page_count() }) // do *not* clone this