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Kernel: MMU keeps track of the current

This commit is contained in:
Bananymous 2023-05-16 00:26:13 +03:00
parent d82c6c2337
commit 31ac3260ed
2 changed files with 10 additions and 0 deletions
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8
kernel/arch/x86_64/MMU.cpp
View File

@ -18,6 +18,7 @@ namespace Kernel
{
static MMU* s_instance = nullptr;
static MMU* s_current = nullptr;
void MMU::initialize()
{
@ -34,6 +35,12 @@ namespace Kernel
return *s_instance;
}
MMU& MMU::current()
{
ASSERT(s_current);
return *s_current;
}
static uint64_t* allocate_page_aligned_page()
{
void* page = kmalloc(PAGE_SIZE, PAGE_SIZE);
@ -130,6 +137,7 @@ namespace Kernel
void MMU::load()
{
asm volatile("movq %0, %%cr3" :: "r"(m_highest_paging_struct));
s_current = this;
}
void MMU::identity_map_page(paddr_t address, flags_t flags)

2
kernel/include/kernel/Memory/MMU.h
View File

@ -20,6 +20,8 @@ namespace Kernel
static void initialize();
static MMU& get();
static MMU& current();
MMU();
~MMU();