From: Artem Kuzin <[email protected]>
Co-developed-by: Nikita Panov <[email protected]>
Signed-off-by: Nikita Panov <[email protected]>
Co-developed-by: Alexander Grubnikov <[email protected]>
Signed-off-by: Alexander Grubnikov <[email protected]>
Signed-off-by: Artem Kuzin <[email protected]>
---
include/linux/mm_types.h | 11 ++++++++++-
mm/Kconfig | 10 ++++++++++
2 files changed, 20 insertions(+), 1 deletion(-)
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 7d30dc4ff0ff..1fafb8425994 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -22,6 +22,8 @@
#include <asm/mmu.h>
+#include <linux/numa.h>
+
#ifndef AT_VECTOR_SIZE_ARCH
#define AT_VECTOR_SIZE_ARCH 0
#endif
@@ -626,7 +628,14 @@ struct mm_struct {
unsigned long mmap_compat_legacy_base;
#endif
unsigned long task_size; /* size of task vm space */
- pgd_t * pgd;
+#ifndef CONFIG_KERNEL_REPLICATION
+ pgd_t *pgd;
+#else
+ union {
+ pgd_t *pgd;
+ pgd_t *pgd_numa[MAX_NUMNODES];
+ };
+#endif
#ifdef CONFIG_MEMBARRIER
/**
diff --git a/mm/Kconfig b/mm/Kconfig
index 09130434e30d..5fe5b3ba7f99 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -1236,6 +1236,16 @@ config LOCK_MM_AND_FIND_VMA
bool
depends on !STACK_GROWSUP
+config KERNEL_REPLICATION
+ bool "Enable kernel text and ro-data replication between NUMA nodes"
+ default n
+ depends on (X86_64 && !(KASAN && X86_5LEVEL)) && MMU && NUMA && !MAXSMP
+
+ help
+ Creates per-NUMA node replicas of kernel text and rodata sections.
+ Page tables are replicated partially, according to replicated kernel
memory range.
+ If unsure, say "n".
+
source "mm/damon/Kconfig"
endmenu
--
2.34.1
