Bananymous/banan-os
1
1
Fork 1
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Kernel: Change PageTable API

Browse Source 
Getting free pages not reserves them, so you don't have to hold
the page table lock :)
This commit is contained in:
Bananymous
2023-08-02 22:09:14 +03:00
parent 64ad752e73
commit 3139391e06
12 changed files with 208 additions and 109 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
kernel/include/kernel/Memory/PageTable.h
View File

@@ -43,8 +43,11 @@ namespace Kernel
bool is_page_free(vaddr_t) const;
bool is_range_free(vaddr_t, size_t bytes) const;
vaddr_t get_free_page(vaddr_t first_address = PAGE_SIZE);
vaddr_t get_free_contiguous_pages(size_t page_count, vaddr_t first_address = PAGE_SIZE);
bool reserve_page(vaddr_t, bool only_free = true);
bool reserve_range(vaddr_t, size_t bytes, bool only_free = true);
vaddr_t reserve_free_page(vaddr_t first_address, vaddr_t last_address = UINTPTR_MAX);
vaddr_t reserve_free_contiguous_pages(size_t page_count, vaddr_t first_address, vaddr_t last_address = UINTPTR_MAX);
void load();

6
kernel/include/kernel/Memory/VirtualRange.h
View File

@@ -14,7 +14,11 @@ namespace Kernel
BAN_NON_MOVABLE(VirtualRange);
public:
static BAN::ErrorOr<BAN::UniqPtr<VirtualRange>> create(PageTable&, vaddr_t, size_t, uint8_t flags);
// Create virtual range to fixed virtual address
static BAN::ErrorOr<BAN::UniqPtr<VirtualRange>> create_to_vaddr(PageTable&, vaddr_t, size_t, uint8_t flags);
// Create virtual range to virtual address range
static BAN::ErrorOr<BAN::UniqPtr<VirtualRange>> create_to_vaddr_range(PageTable&, vaddr_t vaddr_start, vaddr_t vaddr_end, size_t, uint8_t flags);
// Create virtual range in kernel memory with kmalloc
static BAN::ErrorOr<BAN::UniqPtr<VirtualRange>> create_kmalloc(size_t);
~VirtualRange();