Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _LINUX_PGALLOC_H
3#define _LINUX_PGALLOC_H
4
5#include <linux/pgtable.h>
6#include <asm/pgalloc.h>
7
8/*
9 * {pgd,p4d}_populate_kernel() are defined as macros to allow
10 * compile-time optimization based on the configured page table levels.
11 * Without this, linking may fail because callers (e.g., KASAN) may rely
12 * on calls to these functions being optimized away when passing symbols
13 * that exist only for certain page table levels.
14 */
15#define pgd_populate_kernel(addr, pgd, p4d) \
16 do { \
17 pgd_populate(&init_mm, pgd, p4d); \
18 if (ARCH_PAGE_TABLE_SYNC_MASK & PGTBL_PGD_MODIFIED) \
19 arch_sync_kernel_mappings(addr, addr); \
20 } while (0)
21
22#define p4d_populate_kernel(addr, p4d, pud) \
23 do { \
24 p4d_populate(&init_mm, p4d, pud); \
25 if (ARCH_PAGE_TABLE_SYNC_MASK & PGTBL_P4D_MODIFIED) \
26 arch_sync_kernel_mappings(addr, addr); \
27 } while (0)
28
29#endif /* _LINUX_PGALLOC_H */