+ loongarch-kfence-avoid-use-config_kfence_num_objects.patch added to mm-new branch

+ loongarch-kfence-avoid-use-config_kfence_num_objects.patch added to mm-new branch

[Andrew Morton]

The patch titled
     Subject: LoongArch: kfence: avoid use CONFIG_KFENCE_NUM_OBJECTS
has been added to the -mm mm-new branch.  Its filename is
     loongarch-kfence-avoid-use-config_kfence_num_objects.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/loongarch-kfence-avoid-use-config_kfence_num_objects.patch

This patch will later appear in the mm-new branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews.  Please do not hesitate to respond to
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fixup patches in mm-new.

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------------------------------------------------------
From: yuan linyu <yuanlinyu@honor.com>
Subject: LoongArch: kfence: avoid use CONFIG_KFENCE_NUM_OBJECTS
Date: Thu, 18 Dec 2025 09:58:47 +0800

Patch series "kfence: allow change objects number".

patch01 use common KFENCE_POOL_SIZE for LoongArch
patch02 always create kfence debugfs dir/file
patch03 allow change objects number


This patch (of 3):

Use common kfence macro KFENCE_POOL_SIZE for KFENCE_AREA_SIZE definition

Link: https://lkml.kernel.org/r/20251218015849.1414609-1-yuanlinyu@honor.com
Link: https://lkml.kernel.org/r/20251218015849.1414609-2-yuanlinyu@honor.com
Signed-off-by: yuan linyu <yuanlinyu@honor.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitriy Vyukov <dvyukov@google.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Marco Elver <elver@google.com>
Cc: WANG Xuerui <kernel@xen0n.name>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/loongarch/include/asm/pgtable.h |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/arch/loongarch/include/asm/pgtable.h~loongarch-kfence-avoid-use-config_kfence_num_objects
+++ a/arch/loongarch/include/asm/pgtable.h
@@ -10,6 +10,7 @@
 #define _ASM_PGTABLE_H
 
 #include <linux/compiler.h>
+#include <linux/kfence.h>
 #include <asm/addrspace.h>
 #include <asm/asm.h>
 #include <asm/page.h>
@@ -96,7 +97,7 @@ extern unsigned long empty_zero_page[PAG
 #define MODULES_END	(MODULES_VADDR + SZ_256M)
 
 #ifdef CONFIG_KFENCE
-#define KFENCE_AREA_SIZE	(((CONFIG_KFENCE_NUM_OBJECTS + 1) * 2 + 2) * PAGE_SIZE)
+#define KFENCE_AREA_SIZE	(KFENCE_POOL_SIZE + (2 * PAGE_SIZE))
 #else
 #define KFENCE_AREA_SIZE	0
 #endif
_

Patches currently in -mm which might be from yuanlinyu@honor.com are

loongarch-kfence-avoid-use-config_kfence_num_objects.patch
kfence-allow-create-debugfs-dir-file-unconditionally.patch
kfence-allow-change-number-of-object-by-early-parameter.patch