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 06EC0C4332F for ; Tue, 22 Nov 2022 13:10:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=DEUvW2ZjiodKFOteYenIeTjZNUBHeqDP/P6ST05bgsY=; b=SVmE652e5sumb0 n7z8ZzRHqonenjWHEadzRY5gZZQoIc6g+jr+kNJAhTSuJ+sKs5Emg9KJpUHhNryEdXXMLjDuEWEQa jDWT6ROVqYEOCCElej+Ztdl+BJ/9VifGxC1iCBDHmoljPF9+GxYgTWrKsLadgBeX/6w9hpG64lqQJ DnMpC3ZdhsqweA7FY/0KqMQATh6vnsEZ+OQ+40tpRUIgYDSBmr35tq4gyLCECcEvNM5vDsR1PQxGN ZCxLpCD3RTJ9z+fhFnhB6Xpl7ifbE251BGiL5yo2TH4h4Ic2RuAwg3sDwrf/qP5ni7mxpTW1W2/dF 8t15bXWZLsvu+W4NCMBQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oxT1b-009Y7B-6g; Tue, 22 Nov 2022 13:09:19 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oxT1Y-009Y5t-CJ for linux-arm-kernel@lists.infradead.org; Tue, 22 Nov 2022 13:09:17 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 25AC3616E8; Tue, 22 Nov 2022 13:09:15 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 827C3C433D7; Tue, 22 Nov 2022 13:09:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1669122554; bh=mZekFvAisY9mUBqWWd0bwjJiX/SlXVpaaCucM2Y0WS4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=f3R4Xpbd5WZfbTTRLbYGZVOUrle7yVmLCu+m1E3nRXz4yguazPyfJF9ybgVZJKbZn y71fIeFGGmLe6jmdqNQ5bt1pUPO9j5aZqerujKm47K+tzTw1ZNA9qP8EVIS2kHOKF7 /RRUV8JkodiHvHahwISd5DUu5c4NEZmaZRsFlxFmy/ypoA0/VqsX8UVGi+KGilgKIF vwF2u56HHWgnjTFGi0qjf38osk2+vYiGIeh+uLZsLP+UNoANFznlDlTCXpWHrP6596 eDmJQ+y5BuaNI8OhmOk3U/2GSffIY/7l3nfPe8M2f9OVZYK83j2Rdr/Mby5pNsSFbX kGdLjRNpdfJvg== Received: from sofa.misterjones.org ([185.219.108.64] helo=valley-girl.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1oxT1T-007rg0-VZ; Tue, 22 Nov 2022 13:09:12 +0000 From: Marc Zyngier To: James Morse , Oliver Upton , Alexandru Elisei Cc: Will Deacon , kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v4 0/3] KVM: arm64: Fixes for parallel faults series Date: Tue, 22 Nov 2022 13:09:06 +0000 Message-Id: <166912253823.898154.3075564690086280701.b4-ty@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221118182222.3932898-1-oliver.upton@linux.dev> References: <20221118182222.3932898-1-oliver.upton@linux.dev> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: james.morse@arm.com, oliver.upton@linux.dev, alexandru.elisei@arm.com, will@kernel.org, kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221122_050916_470143_0C569998 X-CRM114-Status: GOOD ( 13.22 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, 18 Nov 2022 18:22:19 +0000, Oliver Upton wrote: > Small set of fixes for the parallel faults series. Most importantly, > stop taking the RCU read lock for walking hyp stage-1. For the sake of > consistency, take a pointer to kvm_pgtable_walker in > kvm_dereference_pteref() as well. > > Tested on an Ampere Altra system with kvm-arm.mode={nvhe,protected} and > lockdep. Applies on top of the parallel faults series picked up last > week. > > [...] Applied to next, thanks! [1/3] KVM: arm64: Take a pointer to walker data in kvm_dereference_pteref() commit: 3a5154c723ba5ceb9ce374a7307e03263c03fd29 [2/3] KVM: arm64: Don't acquire RCU read lock for exclusive table walks commit: b7833bf202e3068abb77c642a0843f696e9c8d38 [3/3] KVM: arm64: Reject shared table walks in the hyp code commit: 5e806c5812e8012a83496cf96bdba266b3aec428 Cheers, M. -- Without deviation from the norm, progress is not possible. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel