From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ot0-f197.google.com (mail-ot0-f197.google.com [74.125.82.197]) by kanga.kvack.org (Postfix) with ESMTP id 910C76B0005 for ; Wed, 2 May 2018 08:22:55 -0400 (EDT) Received: by mail-ot0-f197.google.com with SMTP id g67-v6so10887820otb.10 for ; Wed, 02 May 2018 05:22:55 -0700 (PDT) Received: from foss.arm.com (foss.arm.com. [217.140.101.70]) by mx.google.com with ESMTP id g43-v6si2147269otc.351.2018.05.02.05.22.54 for ; Wed, 02 May 2018 05:22:54 -0700 (PDT) Date: Wed, 2 May 2018 13:23:14 +0100 From: Will Deacon Subject: Re: [PATCH 1/2] arm64/mm: define ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT Message-ID: <20180502122314.GB30246@arm.com> References: <1525247602-1565-1-git-send-email-opensource.ganesh@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1525247602-1565-1-git-send-email-opensource.ganesh@gmail.com> Sender: owner-linux-mm@kvack.org List-ID: To: Ganesh Mahendran Cc: ldufour@linux.vnet.ibm.com, catalin.marinas@arm.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org On Wed, May 02, 2018 at 03:53:21PM +0800, Ganesh Mahendran wrote: > Set ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT for arm64. This > enables Speculative Page Fault handler. Are there are tests for this? I'm really nervous about enabling it... Will > > Signed-off-by: Ganesh Mahendran > --- > This patch is on top of Laurent's v10 spf > --- > arch/arm64/Kconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > index eb2cf49..cd583a9 100644 > --- a/arch/arm64/Kconfig > +++ b/arch/arm64/Kconfig > @@ -144,6 +144,7 @@ config ARM64 > select SPARSE_IRQ > select SYSCTL_EXCEPTION_TRACE > select THREAD_INFO_IN_TASK > + select ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT if SMP > help > ARM 64-bit (AArch64) Linux support. > > -- > 1.9.1 >