From nobody Thu Apr 16 23:11:29 2026 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A759E38B7A2; Tue, 13 Jan 2026 10:49:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768301402; cv=none; b=PDT89ed3G/8U5XL/f6YjPftGRW+XPeOy+fVeGB+ZmC5R642IccU1cyh4ZWuOvUiAomqGwJE5gl0RC//Ggt0CsBJ3DzaJ8qal5hQqbUWrybfjSdDgpzu1uWaCYr4OLC0fsGXXjRUQ3jxx6XfN9GIjGDRU6wTv0G8ilIlPum8zH9U= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768301402; c=relaxed/simple; bh=qJ9nDC/MGZbi0ZbtVtD/p9eRf1X84NIDdqmyMpnpEEo=; h=Date:From:To:Subject:Cc:In-Reply-To:References:MIME-Version: Message-ID:Content-Type; b=gFsRLE/DAahHNmbLc98nfMPr0IqM1KkITsJEOSlCxz1UvlNLqknF+spXSWBJd5gGDwm8h0Bj3nzDJiWVOb5Z7+6cAwazokhThdNS9H/UQfCeEmGvs/f7gfkPszUXgjw6VYLGiOJ0C/ShdV5dukwCXdsdEBsKHJABY8072DbTmyk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=s6nVZm2I; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=bL3grXtK; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="s6nVZm2I"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="bL3grXtK" Date: Tue, 13 Jan 2026 10:49:57 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1768301398; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=7XG+ByXswHwIb8r4PbgEPRPSQGB6zfXPcPKQGgHrH9E=; b=s6nVZm2I6/ShijGObxZT44dZ90RjnPRh5YX7dFYueAx1JRgl2QCnyyTC/uh7QpWO2dZP65 qKvDeD7NtsEF7N10tvN9YhddTVzKRHRM0LPNy2W3NEOygYCUpWnpGMfUAHqMDcsrZS/gZq tJIwveLr85SotIj9FzOdcjZnuxshoa9hilJ9TvSamA/N3RG6zF8hChGDGDdec7mOwdwLV6 41zJqz5B9dY976NqVMcQZIISQ6+dRoZWqZPTy4+AZIsdMhRA37RzyGlw010169Pl7o7ETq J8Zy5KLKEbgC6tj2LqCw7nKpggNDIvuIt7F61VWMaMCbPikYnGggq0NgJOmjHQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1768301398; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=7XG+ByXswHwIb8r4PbgEPRPSQGB6zfXPcPKQGgHrH9E=; b=bL3grXtK2JM/QtJlewTATSJm4ps6vtPOepyHy8WOO2L8ay+1uMAQQwQa26gTOuz6cRd7eL q02BRGGnWWs4NZCA== From: "tip-bot2 for Boqun Feng" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: locking/core] arch: um/x86: Select ARCH_SUPPORTS_ATOMIC_RMW for UML_X86 Cc: FUJITA Tomonori , Richard Weinberger , Boqun Feng , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20260106034034.60074-1-boqun.feng@gmail.com> References: <20260106034034.60074-1-boqun.feng@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <176830139706.510.489304857404520372.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Precedence: bulk Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable The following commit has been merged into the locking/core branch of tip: Commit-ID: cf4c3bc1445152c1949a4b5fef56d07579fadb1e Gitweb: https://git.kernel.org/tip/cf4c3bc1445152c1949a4b5fef56d0757= 9fadb1e Author: Boqun Feng AuthorDate: Tue, 06 Jan 2026 11:40:34 +08:00 Committer: Boqun Feng CommitterDate: Fri, 09 Jan 2026 19:01:41 +08:00 arch: um/x86: Select ARCH_SUPPORTS_ATOMIC_RMW for UML_X86 x86 atomic instructions are used for um on UML_X86, therefore atomics on UML_X86 support native atomic RmW as x86 does, hence select ARCH_SUPPORTS_ATOMIC_RMW. Reviewed-by: FUJITA Tomonori Acked-by: Richard Weinberger Signed-off-by: Boqun Feng Link: https://patch.msgid.link/20260106034034.60074-1-boqun.feng@gmail.com --- arch/x86/um/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/um/Kconfig b/arch/x86/um/Kconfig index bdd7c8e..44b12e4 100644 --- a/arch/x86/um/Kconfig +++ b/arch/x86/um/Kconfig @@ -9,6 +9,7 @@ endmenu config UML_X86 def_bool y select ARCH_USE_QUEUED_RWLOCKS + select ARCH_SUPPORTS_ATOMIC_RMW select ARCH_USE_QUEUED_SPINLOCKS select DCACHE_WORD_ACCESS select HAVE_EFFICIENT_UNALIGNED_ACCESS