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 X-Spam-Level: X-Spam-Status: No, score=-12.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,INCLUDES_PULL_REQUEST,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 14B23C5DF60 for ; Fri, 8 Nov 2019 10:32:41 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id E01BD218AE for ; Fri, 8 Nov 2019 10:32:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="kMYX91Us"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="VHgT/2En" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E01BD218AE Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Subject:To:From :Date:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=iFv/oLYlRYEenVAatlJx46QfLhYsFd+nZN21LeVxSWI=; b=kMYX91Us3F8W6L K5UF8jTFuJ0jlJVYPxoLL09T0kL/4J6YTFDs83h/sntH7lrkpfJrydLTbnrnLekCRLCzhqZBIljko WySFLgjCZYKhJV//7Pr7h4Ow69V0Vkox9DBaIrFMjfRAWCjteUEUcCWyvwgrcF3kBeqSTwEcvvBW+ IEEzNLU7Uf1kdqps4OLQC89e4b0ZNcUlJFW3oo8ftrKuZ5Ic9G0t3+zjwZmH8ELla5X12VUGa4u6M Rqr/R1aRgSI/hXFBbZ5NyrJioBH2X6oszZCio+jEnaSa/GYxOW44tUz1zDRUs2v40Pzr+e8rN6eCO XsEjKk8R/Mm0IcUqi6cA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iT1ZH-0001VK-O4; Fri, 08 Nov 2019 10:32:39 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iT1ZE-0001Us-PF for linux-arm-kernel@lists.infradead.org; Fri, 08 Nov 2019 10:32:38 +0000 Received: from willie-the-truck (236.31.169.217.in-addr.arpa [217.169.31.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2560221848; Fri, 8 Nov 2019 10:32:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573209156; bh=Zrz2muJg2Wi+GRQmY5YrG97htwFJeAI4OLuBB+7I9q8=; h=Date:From:To:Cc:Subject:From; b=VHgT/2EnB2SWziDwi5HEB34jb3w3+2Aq7SjBroebo0+uAw9zbBJ03g96pSSzC9sFK /c8qvBba/M45Qc4t7Kq1b6JhqeNY6yYVApR+hUWyCyKpWSqZFTjiXpx+2Yl5xdN5xn dQymNY83aVUX4OcEePulA5Y9b8AGI+V3S2HzOWSo= Date: Fri, 8 Nov 2019 10:32:31 +0000 From: Will Deacon To: torvalds@linux-foundation.org Subject: [GIT PULL] arm64: Fix for -rc7 Message-ID: <20191108103231.GA19153@willie-the-truck> MIME-Version: 1.0 Content-Disposition: inline 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-20191108_023236_842530_E7FD3D4F X-CRM114-Status: GOOD ( 10.96 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: catalin.marinas@arm.com, Linux Kernel Mailing List , Linux ARM Kernel Mailing List Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Linus, Please pull this single arm64 fix for -rc7. It's a revert of 747a70e60b72 ("arm64: Fix copy-on-write referencing in HugeTLB"), not because that patch was wrong, but because it was broken by aa57157be69f ("arm64: Ensure VM_WRITE|VM_SHARED ptes are clean by default") which we merged in -rc6. We spotted the issue in Android (AOSP), where one of the JIT threads gets stuck on a write fault during boot because the faulting pte is marked as PTE_DIRTY | PTE_WRITE | PTE_RDONLY and the fault handler decides that there's nothing to do thanks to pte_same() masking out PTE_RDONLY. Thanks to John Stultz for reporting this and testing this so quickly, and to Steve Capper for confirming that the HugeTLB tests continue to pass. Cheers, Will --->8 The following changes since commit 1cf45b8fdbb87040e1d1bd793891089f4678aa41: arm64: apply ARM64_ERRATUM_843419 workaround for Brahma-B53 core (2019-11-01 10:47:37 +0000) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git tags/arm64-fixes for you to fetch changes up to 6767df245f4736d0cf0c6fb7cf9cf94b27414245: arm64: Do not mask out PTE_RDONLY in pte_same() (2019-11-06 19:31:56 +0000) ---------------------------------------------------------------- arm64 fix for -rc7 - Fix pte_same() to avoid getting stuck on write fault ---------------------------------------------------------------- Catalin Marinas (1): arm64: Do not mask out PTE_RDONLY in pte_same() arch/arm64/include/asm/pgtable.h | 17 ----------------- 1 file changed, 17 deletions(-) _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel