From: Heiko Stuebner <heiko@sntech.de>
To: linux-riscv@lists.infradead.org, palmer@dabbelt.com,
paul.walmsley@sifive.com
Cc: linux-kernel@vger.kernel.org, christoph.muellner@vrull.eu,
David.Laight@ACULAB.COM, Heiko Stuebner <heiko.stuebner@vrull.eu>
Subject: [PATCH v3 0/2] Add Zawrs support and use it for spinlocks
Date: Sun, 21 May 2023 13:47:13 +0200 [thread overview]
Message-ID: <20230521114715.955823-1-heiko.stuebner@vrull.eu> (raw)
From: Heiko Stuebner <heiko.stuebner@vrull.eu>
Zawrs [0] was ratified in november 2022 [1], so I've resurrect the patch
adding Zawrs support for spinlocks and adapted it to recent kernel
changes.
Also incorporated are the nice comments David Laight provided on v2.
Changes since v2:
- Rebase on top of 6.4-rc1
- Adapt to changed alternatives Kconfig handling
- Adapt to changed cpufeature extension handling
- Address review comments from David Laight
- better handling for 32/64bit cases (less ifdefery)
- less macros calling macros
- don't duplicate __smp_load_reserved_relaxed in
__smp_load_reserved_aquire
Changes since v1:
- Fixing type checking code for 32/64-bit values
- Adjustments according to the specification change
- Adding "depends on !XIP_KERNEL" to RISCV_ISA_ZAWRS
[0] https://github.com/riscv/riscv-zawrs/blob/main/zawrs.adoc
[1] https://github.com/riscv/riscv-zawrs/commit/9ff54f7e7fcd95cf1b111d2e54276ff1183bcd37
Christoph Müllner (1):
riscv: Add Zawrs support for spinlocks
Heiko Stuebner (1):
riscv: don't include kernel.h into alternative.h
arch/riscv/Kconfig | 10 +++++
arch/riscv/include/asm/alternative.h | 1 -
arch/riscv/include/asm/barrier.h | 64 ++++++++++++++++++++++++++++
arch/riscv/include/asm/errata_list.h | 14 ++++++
arch/riscv/include/asm/hwcap.h | 1 +
arch/riscv/kernel/cpu.c | 1 +
arch/riscv/kernel/cpufeature.c | 1 +
7 files changed, 91 insertions(+), 1 deletion(-)
--
2.39.0
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next reply other threads:[~2023-05-21 11:47 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-21 11:47 Heiko Stuebner [this message]
2023-05-21 11:47 ` [PATCH v3 1/2] riscv: don't include kernel.h into alternative.h Heiko Stuebner
2023-05-24 14:01 ` Andrew Jones
2023-05-21 11:47 ` [PATCH v3 2/2] riscv: Add Zawrs support for spinlocks Heiko Stuebner
2023-05-22 17:43 ` Conor Dooley
2023-05-24 17:05 ` Andrew Jones
2023-05-24 23:00 ` Palmer Dabbelt
2023-05-30 18:45 ` Andrea Parri
2023-10-19 14:21 ` [PATCH v3 0/2] Add Zawrs support and use it " Andrea Parri
2023-10-19 16:22 ` Christoph Müllner
2023-10-20 10:19 ` Andrea Parri
2024-01-08 11:35 ` Andrew Jones
2024-01-08 13:38 ` Andrea Parri
2024-01-08 14:00 ` Christoph Müllner
2024-01-08 14:10 ` Andrew Jones
2024-03-05 23:31 ` Charlie Jenkins
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