This is a note to let you know that I've just added the patch titled
LoongArch: mm: Add p?d_leaf() definitions
to the 6.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
loongarch-mm-add-p-d_leaf-definitions.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 303be4b33562a5b689261ced1616bf16ad49efa7 Mon Sep 17 00:00:00 2001
From: Hongchen Zhang <zhanghongchen@xxxxxxxxxxx>
Date: Wed, 6 Sep 2023 22:53:09 +0800
Subject: LoongArch: mm: Add p?d_leaf() definitions
From: Hongchen Zhang <zhanghongchen@xxxxxxxxxxx>
commit 303be4b33562a5b689261ced1616bf16ad49efa7 upstream.
When I do LTP test, LTP test case ksm06 caused panic at
break_ksm_pmd_entry
-> pmd_leaf (Huge page table but False)
-> pte_present (panic)
The reason is pmd_leaf() is not defined, So like commit 501b81046701
("mips: mm: add p?d_leaf() definitions") add p?d_leaf() definition for
LoongArch.
Fixes: 09cfefb7fa70 ("LoongArch: Add memory management")
Cc: stable@xxxxxxxxxxxxxxx
Acked-by: David Hildenbrand <david@xxxxxxxxxx>
Signed-off-by: Hongchen Zhang <zhanghongchen@xxxxxxxxxxx>
Signed-off-by: Huacai Chen <chenhuacai@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/loongarch/include/asm/pgtable.h | 3 +++
1 file changed, 3 insertions(+)
--- a/arch/loongarch/include/asm/pgtable.h
+++ b/arch/loongarch/include/asm/pgtable.h
@@ -593,6 +593,9 @@ static inline long pmd_protnone(pmd_t pm
}
#endif /* CONFIG_NUMA_BALANCING */
+#define pmd_leaf(pmd) ((pmd_val(pmd) & _PAGE_HUGE) != 0)
+#define pud_leaf(pud) ((pud_val(pud) & _PAGE_HUGE) != 0)
+
/*
* We provide our own get_unmapped area to cope with the virtual aliasing
* constraints placed on us by the cache architecture.
Patches currently in stable-queue which might be from zhanghongchen@xxxxxxxxxxx are
queue-6.4/loongarch-mm-add-p-d_leaf-definitions.patch
