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Kernel: You can specify first vaddr for getting free pages

This commit is contained in:
Bananymous 2023-06-04 01:15:48 +03:00
parent 413f05bfca
commit 8352392b38
2 changed files with 5 additions and 3 deletions
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6
kernel/arch/x86_64/PageTable.cpp
View File

@ -382,11 +382,13 @@ namespace Kernel
ASSERT_NOT_REACHED();
}
vaddr_t PageTable::get_free_contiguous_pages(size_t page_count) const
vaddr_t PageTable::get_free_contiguous_pages(size_t page_count, vaddr_t first_address) const
{
ASSERT(first_address % PAGE_SIZE == 0);
LockGuard _(m_lock);
for (vaddr_t vaddr = PAGE_SIZE; !(vaddr >> 48); vaddr += PAGE_SIZE)
for (vaddr_t vaddr = first_address; is_canonical(vaddr); vaddr += PAGE_SIZE)
{
bool valid { true };
for (size_t page = 0; page < page_count; page++)

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

@ -43,7 +43,7 @@ namespace Kernel
bool is_range_free(vaddr_t, size_t bytes) const;
vaddr_t get_free_page() const;
vaddr_t get_free_contiguous_pages(size_t page_count) const;
vaddr_t get_free_contiguous_pages(size_t page_count, vaddr_t first_address = PAGE_SIZE) const;
void invalidate(vaddr_t);
void load();