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Kernel: Make MemoryManager API type-safe for Region::Access enum

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Increase type-safety moving the MemoryManager APIs which take a
Region::Access to actually use that type instead of a `u8`.

Eventually the actually m_access can be moved there as well, but
I hit some weird bug where it wasn't using the correct operators
in `set_access_bit(..)` even though it's declared (and tested).
Something to fix-up later.
This commit is contained in:
Brian Gianforcaro 2021-03-06 19:33:25 -08:00 • committed by Andreas Kling
parent c825159f01
commit eaef57443c
6 changed files with 39 additions and 35 deletions
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12
Kernel/VM/MemoryManager.cpp
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@ -489,7 +489,7 @@ PageFaultResponse MemoryManager::handle_page_fault(const PageFault& fault)
return region->handle_fault(fault, lock);
}
OwnPtr<Region> MemoryManager::allocate_contiguous_kernel_region(size_t size, String name, u8 access, size_t physical_alignment, Region::Cacheable cacheable)
OwnPtr<Region> MemoryManager::allocate_contiguous_kernel_region(size_t size, String name, Region::Access access, size_t physical_alignment, Region::Cacheable cacheable)
{
VERIFY(!(size % PAGE_SIZE));
ScopedSpinLock lock(s_mm_lock);
@ -500,7 +500,7 @@ OwnPtr<Region> MemoryManager::allocate_contiguous_kernel_region(size_t size, Str
return allocate_kernel_region_with_vmobject(range.value(), vmobject, move(name), access, cacheable);
}
OwnPtr<Region> MemoryManager::allocate_kernel_region(size_t size, String name, u8 access, AllocationStrategy strategy, Region::Cacheable cacheable)
OwnPtr<Region> MemoryManager::allocate_kernel_region(size_t size, String name, Region::Access access, AllocationStrategy strategy, Region::Cacheable cacheable)
{
VERIFY(!(size % PAGE_SIZE));
ScopedSpinLock lock(s_mm_lock);
@ -513,7 +513,7 @@ OwnPtr<Region> MemoryManager::allocate_kernel_region(size_t size, String name, u
return allocate_kernel_region_with_vmobject(range.value(), vmobject.release_nonnull(), move(name), access, cacheable);
}
OwnPtr<Region> MemoryManager::allocate_kernel_region(PhysicalAddress paddr, size_t size, String name, u8 access, Region::Cacheable cacheable)
OwnPtr<Region> MemoryManager::allocate_kernel_region(PhysicalAddress paddr, size_t size, String name, Region::Access access, Region::Cacheable cacheable)
{
VERIFY(!(size % PAGE_SIZE));
ScopedSpinLock lock(s_mm_lock);
@ -526,7 +526,7 @@ OwnPtr<Region> MemoryManager::allocate_kernel_region(PhysicalAddress paddr, size
return allocate_kernel_region_with_vmobject(range.value(), *vmobject, move(name), access, cacheable);
}
OwnPtr<Region> MemoryManager::allocate_kernel_region_identity(PhysicalAddress paddr, size_t size, String name, u8 access, Region::Cacheable cacheable)
OwnPtr<Region> MemoryManager::allocate_kernel_region_identity(PhysicalAddress paddr, size_t size, String name, Region::Access access, Region::Cacheable cacheable)
{
VERIFY(!(size % PAGE_SIZE));
ScopedSpinLock lock(s_mm_lock);
@ -539,7 +539,7 @@ OwnPtr<Region> MemoryManager::allocate_kernel_region_identity(PhysicalAddress pa
return allocate_kernel_region_with_vmobject(range.value(), *vmobject, move(name), access, cacheable);
}
OwnPtr<Region> MemoryManager::allocate_kernel_region_with_vmobject(const Range& range, VMObject& vmobject, String name, u8 access, Region::Cacheable cacheable)
OwnPtr<Region> MemoryManager::allocate_kernel_region_with_vmobject(const Range& range, VMObject& vmobject, String name, Region::Access access, Region::Cacheable cacheable)
{
ScopedSpinLock lock(s_mm_lock);
auto region = Region::create_kernel_only(range, vmobject, 0, move(name), access, cacheable);
@ -548,7 +548,7 @@ OwnPtr<Region> MemoryManager::allocate_kernel_region_with_vmobject(const Range&
return region;
}
OwnPtr<Region> MemoryManager::allocate_kernel_region_with_vmobject(VMObject& vmobject, size_t size, String name, u8 access, Region::Cacheable cacheable)
OwnPtr<Region> MemoryManager::allocate_kernel_region_with_vmobject(VMObject& vmobject, size_t size, String name, Region::Access access, Region::Cacheable cacheable)
{
VERIFY(!(size % PAGE_SIZE));
ScopedSpinLock lock(s_mm_lock);