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[2a02:3100:ae86:1b01:80e2:8851:4221:68d8]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49b94dc1076sm141898395e9.3.2026.08.29.10.49.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 29 Aug 2026 10:49:37 -0700 (PDT) Date: Sat, 29 Aug 2026 19:49:35 +0200 From: Karl Mehltretter To: Catalin Marinas Cc: Russell King , Will Deacon , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] ARM: asid: Do not replace active_asids if already 0 Message-ID: References: <20260809180600.6049-1-kmehltretter@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260829_104940_888979_A2693C00 X-CRM114-Status: GOOD ( 14.85 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Aug 27, 2026 at 11:26:42AM +0100, Catalin Marinas wrote: > > non-relaxed (cmp)xchg is used as in the existing ARM code. > > The patch is still valid. It's safe to use the relaxed accessors here if > you want or maybe do it as a separate patch for other atomic ops in this > code. I think at the time we added the ASID allocator, there were no > relaxed accessors in the kernel. > > You can send it to Russell's patch system. > Done: https://www.armlinux.org.uk/developer/patches/viewpatch.php?id=9493/1 Thanks, Karl