From: David Hildenbrand <david@redhat.com>
To: Hongchen Zhang <zhanghongchen@loongson.cn>,
Huacai Chen <chenhuacai@kernel.org>,
WANG Xuerui <kernel@xen0n.name>,
Andrew Morton <akpm@linux-foundation.org>,
"Mike Rapoport IBM)" <rppt@kernel.org>,
Feiyang Chen <chenfeiyang@loongson.cn>,
Qi Zheng <zhengqi.arch@bytedance.com>,
"Matthew Wilcox Oracle)" <willy@infradead.org>,
Kefeng Wang <wangkefeng.wang@huawei.com>,
Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: loongarch@lists.linux.dev, linux-kernel@vger.kernel.org,
stable@vger.kernel.org, loongson-kernel@lists.loongnix.cn
Subject: Re: [PATCH v3] LoongArch: add p?d_leaf() definitions
Date: Wed, 6 Sep 2023 11:25:42 +0200 [thread overview]
Message-ID: <4268e128-ce8b-b7da-464e-eda585aeacd6@redhat.com> (raw)
In-Reply-To: <20230906092019.4681-1-zhanghongchen@loongson.cn>
On 06.09.23 11:20, Hongchen Zhang wrote:
> 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@vger.kernel.org
> Signed-off-by: Hongchen Zhang <zhanghongchen@loongson.cn>
> ---
> v2->v3: add Cc: stable@vger.kernel.org
> v1->v2: add Fixes in commit message
> ---
> 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 */
Acked-by: David Hildenbrand <david@redhat.com>
--
Cheers,
David / dhildenb
next prev parent reply other threads:[~2023-09-06 9:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-06 9:20 Hongchen Zhang
2023-09-06 9:25 ` David Hildenbrand [this message]
2023-09-07 1:36 ` Huacai Chen
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