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Zeroed page allocation

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Asya 2023-02-11 11:22:46 +03:00
parent 11620e6499
commit d9fb718b86
1 changed files with 8 additions and 0 deletions
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8
kernel/src/memory.rs
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@ -20,6 +20,14 @@ impl MemoryManager {
self.get_free_pages(order).map(|addr| addr as *mut u8) self.get_free_pages(order).map(|addr| addr as *mut u8)
} }
pub fn zallocate_pages(&mut self, order: usize) -> Option<*mut u8> {
let ptr = self.allocate_pages(order)?;
unsafe {
ptr.write_bytes(0, PAGE_SIZE << order);
}
Some(ptr)
}
/// # Safety /// # Safety
/// This method assumes that `address` is in range of this allocator /// This method assumes that `address` is in range of this allocator
pub unsafe fn deallocate_pages(&mut self, address: *mut u8, order: usize) { pub unsafe fn deallocate_pages(&mut self, address: *mut u8, order: usize) {