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 7A7ACC433FE for ; Mon, 30 May 2022 13:38:39 +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:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=XXTwOxv/n0NolP43p4OwZEf1QXtjTagOhM3vsXTV4bo=; b=BbeXEbGlpRvtLT EacQbgaf7JauyFQLkMLHCwPdnMO1pBOE74v/Jd5A8vRxvn8OB0qXo+9srnrurNZn+mibanIVPkW1D tXZ4m+S9EIoqvKj+L3PLvnW/XOFdgmtSqHBwWsPiwgV+ff2ouFLYIdDBUYti8Ct6+PJw/8idEOeEr HH9PsXIrLZyIAUrJik6jbk3obpGW4ixgxfWUNnREaYtouNRRwbhiMtYnvlO79OHZtXJaNXAWxDOIw wxmZ9IcspdbO1WJ5DVgesMESAxoj1HQyRFkXKITlgZGI8lFVQh4cOVc42f1lJUjpj71Zmx/w6pKiL DcKOq1zsh5KycmnXnOdw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nvfbH-006n3U-Ng; Mon, 30 May 2022 13:38:27 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nvfVB-006jfC-TB; Mon, 30 May 2022 13:32:11 +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 B4F0960F74; Mon, 30 May 2022 13:32:08 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 83CBBC385B8; Mon, 30 May 2022 13:31:55 +0000 (UTC) Date: Mon, 30 May 2022 14:31:52 +0100 From: Catalin Marinas To: Peter Xu Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Will Deacon , Matt Turner , linux-s390@vger.kernel.org, Andrew Morton , Brian Cain , Borislav Petkov , linux-alpha@vger.kernel.org, Alistair Popple , Jonas Bonn , linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, Michael Ellerman , Stefan Kristiansson , linux-snps-arc@lists.infradead.org, Vineet Gupta , Vasily Gorbik , Vlastimil Babka , Ivan Kokshaysky , Rich Felker , sparclinux@vger.kernel.org, Russell King , David Hildenbrand , Benjamin Herrenschmidt , Nicholas Piggin , "James E . J . Bottomley" , linux-xtensa@linux-xtensa.org, linux-sh@vger.kernel.org, Paul Walmsley , linux-m68k@lists.linux-m68k.org, linuxppc-dev@lists.ozlabs.org, Richard Henderson , Guo Ren , linux-parisc@vger.kernel.org, Andrea Arcangeli , Helge Deller , Al Viro , Albert Ou , linux-um@lists.infradead.org, "H . Peter Anvin" , Janosch Frank , Sven Schnelle , Anton Ivanov , openrisc@lists.librecores.org, Thomas Bogendoerfer , linux-hexagon@vger.kernel.org, Andy Lutomirski , Stafford Horne , linux-csky@vger.kernel.org, Heiko Carstens , Thomas Gleixner , linux-mips@vger.kernel.org, Paul Mackerras , Alexander Gordeev , Dinh Nguyen , Palmer Dabbelt , "David S . Miller" , Johannes Weiner , Hugh Dickins , Ingo Molnar , Peter Zijlstra , linux-riscv@lists.infradead.org, Max Filippov , Geert Uytterhoeven , Christian Borntraeger , Johannes Berg , Chris Zankel , Michal Simek , x86@kernel.org, Yoshinori Sato , Dave Hansen , Richard Weinberger , Ingo Molnar Subject: Re: [PATCH v4] mm: Avoid unnecessary page fault retires on shared memory types Message-ID: References: <20220527193936.30678-1-peterx@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20220527193936.30678-1-peterx@redhat.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220530_063210_072958_2A09FD9D X-CRM114-Status: GOOD ( 15.90 ) X-BeenThere: linux-riscv@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-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On Fri, May 27, 2022 at 03:39:36PM -0400, Peter Xu wrote: > diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c > index 77341b160aca..e401d416bbd6 100644 > --- a/arch/arm64/mm/fault.c > +++ b/arch/arm64/mm/fault.c > @@ -607,6 +607,10 @@ static int __kprobes do_page_fault(unsigned long far, unsigned int esr, > return 0; > } > > + /* The fault is fully completed (including releasing mmap lock) */ > + if (fault & VM_FAULT_COMPLETED) > + return 0; > + > if (fault & VM_FAULT_RETRY) { > mm_flags |= FAULT_FLAG_TRIED; > goto retry; For arm64: Acked-by: Catalin Marinas _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv