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Message-Id: <20230906084351.3533-1-zhanghongchen@loongson.cn>
Date: Wed, 6 Sep 2023 16:43:51 +0800
From: Hongchen Zhang <zhanghongchen@...ngson.cn>
To: Huacai Chen <chenhuacai@...nel.org>,
WANG Xuerui <kernel@...0n.name>,
Andrew Morton <akpm@...ux-foundation.org>,
David Hildenbrand <david@...hat.com>,
"Mike Rapoport IBM)" <rppt@...nel.org>,
Feiyang Chen <chenfeiyang@...ngson.cn>,
Hongchen Zhang <zhanghongchen@...ngson.cn>,
Qi Zheng <zhengqi.arch@...edance.com>,
"Matthew Wilcox Oracle)" <willy@...radead.org>,
Kefeng Wang <wangkefeng.wang@...wei.com>,
Jiaxun Yang <jiaxun.yang@...goat.com>
Cc: loongarch@...ts.linux.dev, linux-kernel@...r.kernel.org,
stable@...r.kernel.org, loongson-kernel@...ts.loongnix.cn
Subject: [PATCH v2] LoongArch: add p?d_leaf() definitions
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.
v2: add Fixes: in commit message.
Fixes: 09cfefb7fa70 ("LoongArch: Add memory management")
Signed-off-by: Hongchen Zhang <zhanghongchen@...ngson.cn>
---
arch/loongarch/include/asm/pgtable.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/loongarch/include/asm/pgtable.h b/arch/loongarch/include/asm/pgtable.h
index 370c6568ceb8..ea54653b7aab 100644
--- a/arch/loongarch/include/asm/pgtable.h
+++ b/arch/loongarch/include/asm/pgtable.h
@@ -243,6 +243,9 @@ static inline void pmd_clear(pmd_t *pmdp)
#define pmd_phys(pmd) PHYSADDR(pmd_val(pmd))
+#define pmd_leaf(pmd) ((pmd_val(pmd) & _PAGE_HUGE) != 0)
+#define pud_leaf(pud) ((pud_val(pud) & _PAGE_HUGE) != 0)
+
#ifndef CONFIG_TRANSPARENT_HUGEPAGE
#define pmd_page(pmd) (pfn_to_page(pmd_phys(pmd) >> PAGE_SHIFT))
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
base-commit: a47fc304d2b678db1a5d760a7d644dac9b067752
--
2.33.0
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