From: Anshuman Khandual <anshuman.khandual@arm.com>
To: Nicholas Piggin <npiggin@gmail.com>, linux-mm@kvack.org
Cc: linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 2/4] arm64: support huge vmap vmalloc
Date: Mon, 10 Jun 2019 11:17:29 +0530 [thread overview]
Message-ID: <c49a8fa7-c700-b45b-31b8-1d49afc42136@arm.com> (raw)
In-Reply-To: <20190610043838.27916-2-npiggin@gmail.com>
On 06/10/2019 10:08 AM, Nicholas Piggin wrote:
> Applying huge vmap to vmalloc requires vmalloc_to_page to walk huge
> pages. Define pud_large and pmd_large to support this.
>
> Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
> ---
> arch/arm64/include/asm/pgtable.h | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
> index 2c41b04708fe..30fe7b344bf7 100644
> --- a/arch/arm64/include/asm/pgtable.h
> +++ b/arch/arm64/include/asm/pgtable.h
> @@ -428,6 +428,7 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
> PMD_TYPE_TABLE)
> #define pmd_sect(pmd) ((pmd_val(pmd) & PMD_TYPE_MASK) == \
> PMD_TYPE_SECT)
> +#define pmd_large(pmd) pmd_sect(pmd)
>
> #if defined(CONFIG_ARM64_64K_PAGES) || CONFIG_PGTABLE_LEVELS < 3
> #define pud_sect(pud) (0)
> @@ -438,6 +439,7 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
> #define pud_table(pud) ((pud_val(pud) & PUD_TYPE_MASK) == \
> PUD_TYPE_TABLE)
> #endif
> +#define pud_large(pud) pud_sect(pud)
>
> extern pgd_t init_pg_dir[PTRS_PER_PGD];
> extern pgd_t init_pg_end[];
Another series (I guess not merged yet) is trying to add these wrappers
on arm64 (https://patchwork.kernel.org/patch/10883887/).
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next prev parent reply other threads:[~2019-06-10 5:47 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-10 4:38 [PATCH 1/4] mm: Move ioremap page table mapping function to mm/ Nicholas Piggin
2019-06-10 4:38 ` [PATCH 2/4] arm64: support huge vmap vmalloc Nicholas Piggin
2019-06-10 5:47 ` Anshuman Khandual [this message]
2019-06-10 6:14 ` Nicholas Piggin
2019-06-10 4:38 ` [PATCH 3/4] powerpc/64s/radix: " Nicholas Piggin
2019-06-10 4:38 ` [PATCH 4/4] mm/vmalloc: Hugepage vmalloc mappings Nicholas Piggin
2019-06-10 5:49 ` Nicholas Piggin
2019-06-10 8:08 ` Satheesh Rajendran
2019-06-10 8:53 ` Anshuman Khandual
2019-06-11 0:16 ` Nicholas Piggin
2019-06-11 6:59 ` Anshuman Khandual
2019-06-19 3:29 ` Nicholas Piggin
2019-06-10 14:10 ` Mark Rutland
2019-06-10 14:44 ` Nicholas Piggin
2019-06-11 6:17 ` Anshuman Khandual
2019-06-19 3:33 ` Nicholas Piggin
2019-06-11 5:39 ` Christophe Leroy
2019-06-19 3:39 ` Nicholas Piggin
2019-06-10 5:42 ` [PATCH 1/4] mm: Move ioremap page table mapping function to mm/ Anshuman Khandual
2019-06-10 6:21 ` Nicholas Piggin
2019-06-11 5:24 ` Christophe Leroy
2019-06-19 3:43 ` Nicholas Piggin
2019-06-19 13:18 ` Christophe Leroy
2019-06-22 9:42 ` Nicholas Piggin
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