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Wed, 12 Jun 2024 05:53:33 -0400 (EDT) From: Jiaxun Yang Subject: [PATCH v2 0/4] MIPS: Enable ARCH_SUPPORTS_ATOMIC_RMW Date: Wed, 12 Jun 2024 10:53:28 +0100 Message-Id: <20240612-mips-llsc-v2-0-a42bd5562bdb@flygoat.com> Precedence: bulk X-Mailing-List: linux-mips@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIABhwaWYC/6tWKk4tykwtVrJSqFYqSi3LLM7MzwNyjHQUlJIzE vPSU3UzU4B8JSMDIxMDM0Mj3dzMgmLdnJziZF3DNKO0JEtDM8tkgyQloPqCotS0zAqwWdGxtbU Aw19DZFsAAAA= To: Thomas Bogendoerfer Cc: Jonas Gorski , "Maciej W. Rozycki" , linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, Jiaxun Yang X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1184; i=jiaxun.yang@flygoat.com; h=from:subject:message-id; bh=LTt8Soc7AMOTMEDD18dBhsJ9SMhm26/CHqO5qzg9vxg=; b=owGbwMvMwCXmXMhTe71c8zDjabUkhrTMAlnmuji3CdNlnhk5T1u/N7V3oWP9sm/hQdneDZ+N7 vkfvbWho5SFQYyLQVZMkSVEQKlvQ+PFBdcfZP2BmcPKBDKEgYtTACaik83wP7osJ/WSmOusjxcY OlRWf9239rnC6dPZ5VO2Fal8nSgx9xYjw/8v6k8id9VYPFHudT/8Ye692e6vt6eWBGmkMomdD7q pyAMA X-Developer-Key: i=jiaxun.yang@flygoat.com; a=openpgp; fpr=980379BEFEBFBF477EA04EF9C111949073FC0F67 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 (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,