From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org (bilbo.ozlabs.org [103.22.144.67]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3zrzPF5rK4zF13m for ; Thu, 1 Mar 2018 02:04:33 +1100 (AEDT) Received: from ozlabs.org (ozlabs.org [IPv6:2401:3900:2:1::2]) by bilbo.ozlabs.org (Postfix) with ESMTP id 3zrzPF36ZYz8t8b for ; Thu, 1 Mar 2018 02:04:33 +1100 (AEDT) Date: Wed, 28 Feb 2018 09:04:27 -0600 From: Segher Boessenkool To: Michael Ellerman Cc: linuxppc-dev@ozlabs.org Subject: Re: [RFC PATCH 1/6] powerpc: Add security feature flags for Spectre/Meltdown Message-ID: <20180228150427.GA21977@gate.crashing.org> References: <20180228145316.11347-1-mpe@ellerman.id.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <20180228145316.11347-1-mpe@ellerman.id.au> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hi! On Thu, Mar 01, 2018 at 01:53:11AM +1100, Michael Ellerman wrote: > +// A speculation barrier should be used for bounds checks (Spectre variant 1ull s/1ull/1)/ ? Segher