From: panqinglin2020@iscas.ac.cn
To: palmer@dabbelt.com, linux-riscv@lists.infradead.org
Cc: jeff@riscv.org, xuyinan@ict.ac.cn,
Qinglin Pan <panqinglin2020@iscas.ac.cn>
Subject: [PATCH v5 0/4] riscv, mm: detect svnapot cpu support at runtime
Date: Mon, 3 Oct 2022 21:47:17 +0800 [thread overview]
Message-ID: <20221003134721.1772455-1-panqinglin2020@iscas.ac.cn> (raw)
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(-)
--
2.35.1
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next reply other threads:[~2022-10-03 13:48 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-03 13:47 panqinglin2020 [this message]
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 ` [PATCH v5 0/4] riscv, mm: detect svnapot cpu support at runtime Qinglin Pan
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