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Kernel: Remove unused MemoryManager::remove_identity_mapping()

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This was not actually used and just sitting there being confusing.
This commit is contained in:
Andreas Kling 2019-08-07 22:13:10 +02:00
parent c258c9a4b2
commit 98ce498922
2 changed files with 0 additions and 16 deletions
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15
Kernel/VM/MemoryManager.cpp
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@ -161,21 +161,6 @@ RefPtr<PhysicalPage> MemoryManager::allocate_page_table(PageDirectory& page_dire
return physical_page; return physical_page;
} }
void MemoryManager::remove_identity_mapping(PageDirectory& page_directory, VirtualAddress vaddr, size_t size)
{
InterruptDisabler disabler;
// FIXME: ASSERT(vaddr is 4KB aligned);
for (u32 offset = 0; offset < size; offset += PAGE_SIZE) {
auto pte_address = vaddr.offset(offset);
auto& pte = ensure_pte(page_directory, pte_address);
pte.set_physical_page_base(0);
pte.set_user_allowed(false);
pte.set_present(true);
pte.set_writable(true);
flush_tlb(pte_address);
}
}
PageTableEntry& MemoryManager::ensure_pte(PageDirectory& page_directory, VirtualAddress vaddr) PageTableEntry& MemoryManager::ensure_pte(PageDirectory& page_directory, VirtualAddress vaddr)
{ {
ASSERT_INTERRUPTS_DISABLED(); ASSERT_INTERRUPTS_DISABLED();

1
Kernel/VM/MemoryManager.h
View file

@ -100,7 +100,6 @@ private:
void map_protected(VirtualAddress, size_t length); void map_protected(VirtualAddress, size_t length);
void create_identity_mapping(PageDirectory&, VirtualAddress, size_t length); void create_identity_mapping(PageDirectory&, VirtualAddress, size_t length);
void remove_identity_mapping(PageDirectory&, VirtualAddress, size_t);
static Region* region_from_vaddr(Process&, VirtualAddress); static Region* region_from_vaddr(Process&, VirtualAddress);
static const Region* region_from_vaddr(const Process&, VirtualAddress); static const Region* region_from_vaddr(const Process&, VirtualAddress);