linux-kernel - [PATCH v2 0/4] MIPS: Enable ARCH_SUPPORTS_ATOMIC

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Message-Id: <20240612-mips-llsc-v2-0-a42bd5562bdb@flygoat.com>
Date: Wed, 12 Jun 2024 10:53:28 +0100
From: Jiaxun Yang <jiaxun.yang@...goat.com>
To: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc: Jonas Gorski <jonas.gorski@...il.com>, 
 "Maciej W. Rozycki" <macro@...am.me.uk>, linux-mips@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Jiaxun Yang <jiaxun.yang@...goat.com>
Subject: [PATCH v2 0/4] MIPS: Enable ARCH_SUPPORTS_ATOMIC_RMW

Hi all,

This series enables ARCH_SUPPORTS_ATOMIC_RMW for MIPS.
The first two patches are for making LLSC availability information
available to Kconfig, and the last two select actual options.

Please review.

v1: https://lore.kernel.org/all/20230519164753.72065-1-jiaxun.yang@flygoat.com/

Thanks
- Jiaxun

Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
---
Jiaxun Yang (4):
      MIPS: Introduce WAR_4KC_LLSC config option
      MIPS: Introduce config options for LLSC availability
      MIPS: Select ARCH_SUPPORTS_ATOMIC_RMW when possible
      MIPS: Select ARCH_HAVE_NMI_SAFE_CMPXCHG when possible

 arch/mips/Kconfig                                  | 28 ++++++++++++++++++++++
 arch/mips/include/asm/cpu-features.h               |  9 ++++++-
 arch/mips/include/asm/cpu.h                        |  1 +
 .../include/asm/mach-ath25/cpu-feature-overrides.h |  6 ++---
 arch/mips/kernel/cpu-probe.c                       |  9 +++++++
 5 files changed, 48 insertions(+), 5 deletions(-)
---
base-commit: 03d44168cbd7fc57d5de56a3730427db758fc7f6
change-id: 20240612-mips-llsc-1f2fb9169c0b

Best regards,
-- 
Jiaxun Yang <jiaxun.yang@...goat.com>