From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8864FC02185 for ; Tue, 21 Jan 2025 09:57:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=wgccJ2YgVNcHrIlbnovTZ5rRG5JMHkpYhhXdN+uTsJ8=; b=aiPSOvWXzrFt+y7XsSr4dehuBh D+orGHhcvjSZPV4/kWdM7drYHicveu+S2cSaCHzvPE35oa3wC0B6W75djWq24ibrTemA1Xt0340Ye 855HfzcsBNhddrb43o7epppLrV1eiMntFSAr3F0Qo+NzSsuJdIHAnZjk/vu7SvI0zxQZHb+UAzLKF spYxeGVw0/OCPS3ZzleCMhkpEn6Wk86O34DhG3T06TICRREhqRAc2SnrwiWgY2R4tsYykVc+nQVIb 1bViMSJ1Yj7d7ZBVWqN+FHNWMsaUXbzSEJ5yQg9sjk47ooeWkzpl1DIECsNvvBAurHKIZKhyzaIkp OyJ5YxJg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1taB0j-00000007UQo-0ydE; Tue, 21 Jan 2025 09:57:29 +0000 Received: from nyc.source.kernel.org ([2604:1380:45d1:ec00::3]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1taAzQ-00000007U7F-3SzW for linux-arm-kernel@lists.infradead.org; Tue, 21 Jan 2025 09:56:10 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 8696DA41430; Tue, 21 Jan 2025 09:54:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 80EB2C4CEE3; Tue, 21 Jan 2025 09:56:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1737453367; bh=Pq6+SwYN8tMjuzLRzEFPjm2o64W9oXSHb9lfpnhWEXA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=RjjtbFSJ3q4X5KDw2bbNwJpHHR6tVsaEigmhBx7CUvGlwyG8YWW3UIFvplnr4pA3W y3orh5kmcaegA+g3PTNh5A134cHBfONE7CeRwul2GKYdVLFSo2UthbU0S5Bf5yY3d6 rLV7ovzvhr6yXdrQMeacPxWEcnIuRFrOQRKNa/acD7/TcAacpIFa3FA1MRXNCVd8mZ EkFnc5NU9KvNo0LK0NrRdrgsv1rcoJ4xEkWdw1PCwEw9DOwAsmzdM9qdcrtCi6Ltup rAUK2Ji3HlQzqQ+pbMKL8R94rqwekU/I4n9ZAVn2Jj5OecZHqFjagGFl+qBdDiGVRG MYaeqen2dAFfw== Date: Tue, 21 Jan 2025 09:55:58 +0000 From: Will Deacon To: Ankur Arora Cc: linux-pm@vger.kernel.org, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, catalin.marinas@arm.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, pbonzini@redhat.com, vkuznets@redhat.com, rafael@kernel.org, daniel.lezcano@linaro.org, peterz@infradead.org, arnd@arndb.de, lenb@kernel.org, mark.rutland@arm.com, harisokn@amazon.com, mtosatti@redhat.com, sudeep.holla@arm.com, cl@gentwo.org, maz@kernel.org, misono.tomohiro@fujitsu.com, maobibo@loongson.cn, zhenglifeng1@huawei.com, joao.m.martins@oracle.com, boris.ostrovsky@oracle.com, konrad.wilk@oracle.com Subject: Re: [PATCH v9 00/15] arm64: support poll_idle() Message-ID: <20250121095558.GA20954@willie-the-truck> References: <20241107190818.522639-1-ankur.a.arora@oracle.com> <8734hd89ze.fsf@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <8734hd89ze.fsf@oracle.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250121_015608_924448_0F2B1254 X-CRM114-Status: GOOD ( 13.78 ) 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 Mon, Jan 20, 2025 at 01:13:25PM -0800, Ankur Arora wrote: > > Ankur Arora writes: > > > This patchset adds support for polling in idle via poll_idle() on > > arm64. > > > > There are two main changes in this version: > > > > 1. rework the series to take Catalin Marinas' comments on the semantics > > of smp_cond_load_relaxed() (and how earlier versions of this > > series were abusing them) into account. > > There was a recent series adding resilient spinlocks which might also have > use for an smp_cond_load_{acquire,release}_timeout() interface. > (https://lore.kernel.org/lkml/20250107192202.GA36003@noisy.programming.kicks-ass.net/) Urgh, that reminds me that I need to go look at that... Will