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From: Qinglin Pan <panqinglin2020@iscas.ac.cn>
To: palmer@dabbelt.com, linux-riscv@lists.infradead.org
Cc: jeff@riscv.org, xuyinan@ict.ac.cn
Subject: Re: [PATCH v5 0/4] riscv, mm: detect svnapot cpu support at runtime
Date: Mon, 3 Oct 2022 21:53:33 +0800	[thread overview]
Message-ID: <fda428b0-11ac-7b75-b2e1-c169042e476e@iscas.ac.cn> (raw)
In-Reply-To: <20221003134721.1772455-1-panqinglin2020@iscas.ac.cn>

Sorry for missing below information.

Changes in v2:
   - detect Svnapot hardware support at boot time.
Changes in v3:
   - do linear mapping again if has_svnapot
Changes in v4:
   - fix some errors/warns reported by checkpatch.pl, thanks @Conor
Changes in v5:
   - modify code according to @Conor and @Heiko's suggestions.
     Thanks @Conor @Heiko


On 10/3/22 9:47 PM, panqinglin2020@iscas.ac.cn wrote:
> From: Qinglin Pan <panqinglin2020@iscas.ac.cn>
> 
> Svnapot is a RISC-V extension for marking contiguous 4K pages as a non-4K
> page. This patch set is for using Svnapot in Linux Kernel's boot process
> and hugetlb fs.
> 
> This patchset adds a Kconfig item for using Svnapot in
> "Platform type"->"SVNAPOT extension support". Its default value is off,
> and people can set it on if they allow kernel to detect Svnapot hardware
> support and leverage it.
> 
> Tested on:
>    - qemu rv64 with "Svnapot support" off and svnapot=true.
>    - qemu rv64 with "Svnapot support" on and svnapot=true.
>    - qemu rv64 with "Svnapot support" off and svnapot=false.
>    - qemu rv64 with "Svnapot support" on and svnapot=false.
> 
> 
> Qinglin Pan (4):
>    mm: modify pte format for Svnapot
>    mm: support Svnapot in physical page linear-mapping
>    mm: support Svnapot in hugetlb page
>    mm: support Svnapot in huge vmap
> 
>   arch/riscv/Kconfig                   |  17 +-
>   arch/riscv/include/asm/errata_list.h |  23 ++-
>   arch/riscv/include/asm/hugetlb.h     |  30 +++-
>   arch/riscv/include/asm/hwcap.h       |   3 +-
>   arch/riscv/include/asm/page.h        |   2 +-
>   arch/riscv/include/asm/pgtable-64.h  |  13 ++
>   arch/riscv/include/asm/pgtable.h     |  68 +++++++-
>   arch/riscv/include/asm/vmalloc.h     |  28 +++
>   arch/riscv/kernel/cpu.c              |   1 +
>   arch/riscv/kernel/cpufeature.c       |  18 ++
>   arch/riscv/mm/hugetlbpage.c          | 250 ++++++++++++++++++++++++++-
>   arch/riscv/mm/init.c                 |  28 ++-
>   12 files changed, 467 insertions(+), 14 deletions(-)
> 


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      parent reply	other threads:[~2022-10-03 13:53 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-03 13:47 [PATCH v5 0/4] riscv, mm: detect svnapot cpu support at runtime panqinglin2020
2022-10-03 13:47 ` [PATCH v5 1/4] mm: modify pte format for Svnapot panqinglin2020
2022-10-04 17:00   ` Andrew Jones
2022-10-04 17:09     ` Conor Dooley
2022-10-04 18:33     ` Conor Dooley
2022-10-05  4:43       ` Qinglin Pan
2022-10-05  6:57         ` Conor Dooley
2022-10-05  7:15         ` Andrew Jones
2022-10-05 12:41           ` Qinglin Pan
2022-10-05 13:25             ` Andrew Jones
2022-10-05 14:50               ` Qinglin Pan
2022-10-05  9:52       ` Heiko Stübner
2022-10-03 13:47 ` [PATCH v5 2/4] mm: support Svnapot in physical page linear-mapping panqinglin2020
2022-10-04 18:40   ` Conor Dooley
2022-10-05  2:43     ` Qinglin Pan
2022-10-05 11:19   ` Andrew Jones
2022-10-05 12:45     ` Qinglin Pan
2022-10-03 13:47 ` [PATCH v5 3/4] mm: support Svnapot in hugetlb page panqinglin2020
2022-10-04 18:43   ` Conor Dooley
2022-10-05  2:31     ` Qinglin Pan
2022-10-05 13:11   ` Andrew Jones
2022-10-05 14:54     ` Qinglin Pan
2022-10-03 13:47 ` [PATCH v5 4/4] mm: support Svnapot in huge vmap panqinglin2020
2022-10-04 18:46   ` Conor Dooley
2022-10-05  4:44     ` Qinglin Pan
2022-10-03 13:53 ` Qinglin Pan [this message]

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