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authorJakub Kicinski <kuba@kernel.org>2025-06-12 10:08:24 -0700
committerJakub Kicinski <kuba@kernel.org>2025-09-04 13:33:00 -0700
commit5ef04a7b068cbb828eba226aacb42f880f7924d7 (patch)
tree92595a2d68b1a4b41e4762e62c0b58e4467d0a83 /include/linux/pgalloc.h
parentc975e1dfcc929dbfde8abfa514494b66f0335006 (diff)
parentd69eb204c255c35abd9e8cb621484e8074c75eaa (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.17-rc5). No conflicts. Adjacent changes: include/net/sock.h c51613fa276f ("net: add sk->sk_drop_counters") 5d6b58c932ec ("net: lockless sock_i_ino()") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/linux/pgalloc.h')
-rw-r--r--include/linux/pgalloc.h29
1 files changed, 29 insertions, 0 deletions
diff --git a/include/linux/pgalloc.h b/include/linux/pgalloc.h
new file mode 100644
index 000000000000..9174fa59bbc5
--- /dev/null
+++ b/include/linux/pgalloc.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_PGALLOC_H
+#define _LINUX_PGALLOC_H
+
+#include <linux/pgtable.h>
+#include <asm/pgalloc.h>
+
+/*
+ * {pgd,p4d}_populate_kernel() are defined as macros to allow
+ * compile-time optimization based on the configured page table levels.
+ * Without this, linking may fail because callers (e.g., KASAN) may rely
+ * on calls to these functions being optimized away when passing symbols
+ * that exist only for certain page table levels.
+ */
+#define pgd_populate_kernel(addr, pgd, p4d) \
+ do { \
+ pgd_populate(&init_mm, pgd, p4d); \
+ if (ARCH_PAGE_TABLE_SYNC_MASK & PGTBL_PGD_MODIFIED) \
+ arch_sync_kernel_mappings(addr, addr); \
+ } while (0)
+
+#define p4d_populate_kernel(addr, p4d, pud) \
+ do { \
+ p4d_populate(&init_mm, p4d, pud); \
+ if (ARCH_PAGE_TABLE_SYNC_MASK & PGTBL_P4D_MODIFIED) \
+ arch_sync_kernel_mappings(addr, addr); \
+ } while (0)
+
+#endif /* _LINUX_PGALLOC_H */