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Prekernel: Use physical addresses for some of the BootInfo parameters

The kernel would just turn those virtual addresses into physical
addresses later on, so let's just use physical addresses right from the
start.
This commit is contained in:
Gunnar Beutner 2021-07-19 18:24:15 +02:00 committed by Andreas Kling
parent dd42093b93
commit be795d5812
6 changed files with 58 additions and 59 deletions

View file

@ -43,19 +43,15 @@ UNMAP_AFTER_INIT void PageDirectory::allocate_kernel_directory()
{
// Adopt the page tables already set up by boot.S
#if ARCH(X86_64)
PhysicalAddress boot_pml4t_paddr(virtual_to_low_physical((FlatPtr)boot_pml4t));
dmesgln("MM: boot_pml4t @ {}", boot_pml4t_paddr);
m_pml4t = PhysicalPage::create(boot_pml4t_paddr, MayReturnToFreeList::No);
dmesgln("MM: boot_pml4t @ {}", boot_pml4t);
m_pml4t = PhysicalPage::create(boot_pml4t, MayReturnToFreeList::No);
#endif
PhysicalAddress boot_pdpt_paddr(virtual_to_low_physical((FlatPtr)boot_pdpt));
PhysicalAddress boot_pd0_paddr(virtual_to_low_physical((FlatPtr)boot_pd0));
PhysicalAddress boot_pd_kernel_paddr(virtual_to_low_physical((FlatPtr)boot_pd_kernel));
dmesgln("MM: boot_pdpt @ {}", boot_pdpt_paddr);
dmesgln("MM: boot_pd0 @ {}", boot_pd0_paddr);
dmesgln("MM: boot_pd_kernel @ {}", boot_pd_kernel_paddr);
m_directory_table = PhysicalPage::create(boot_pdpt_paddr, MayReturnToFreeList::No);
m_directory_pages[0] = PhysicalPage::create(boot_pd0_paddr, MayReturnToFreeList::No);
m_directory_pages[(kernel_base >> 30) & 0x1ff] = PhysicalPage::create(boot_pd_kernel_paddr, MayReturnToFreeList::No);
dmesgln("MM: boot_pdpt @ {}", boot_pdpt);
dmesgln("MM: boot_pd0 @ {}", boot_pd0);
dmesgln("MM: boot_pd_kernel @ {}", boot_pd_kernel);
m_directory_table = PhysicalPage::create(boot_pdpt, MayReturnToFreeList::No);
m_directory_pages[0] = PhysicalPage::create(boot_pd0, MayReturnToFreeList::No);
m_directory_pages[(kernel_base >> 30) & 0x1ff] = PhysicalPage::create(boot_pd_kernel, MayReturnToFreeList::No);
}
PageDirectory::PageDirectory(const RangeAllocator* parent_range_allocator)