From mboxrd@z Thu Jan 1 00:00:00 1970 From: Will Deacon Subject: Re: [PATCH v2 5/5] arm64/speculation: Support 'mitigations=' cmdline option Date: Tue, 16 Apr 2019 22:39:21 +0100 Message-ID: <20190416213920.GC11724@brain-police> References: <24039e1370ed57e8075730c0b88c505afd9e0ab7.1555085500.git.jpoimboe@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-Archive: List-Post: To: Thomas Gleixner Cc: Josh Poimboeuf , linux-kernel@vger.kernel.org, x86@kernel.org, Ingo Molnar , Borislav Petkov , "H . Peter Anvin" , Andy Lutomirski , Peter Zijlstra , Jiri Kosina , Waiman Long , Andrea Arcangeli , Jon Masters , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , linuxppc-dev@lists.ozlabs.org, Martin Schwidefsky , Heiko Carstens , linux-s390@vger.kernel.org, Catalin Marinas , linux-arm-kernel@lists.infradead.orglinux List-ID: On Tue, Apr 16, 2019 at 09:26:13PM +0200, Thomas Gleixner wrote: > On Fri, 12 Apr 2019, Josh Poimboeuf wrote: > > > Configure arm64 runtime CPU speculation bug mitigations in accordance > > with the 'mitigations=' cmdline option. This affects Meltdown, Spectre > > v2, and Speculative Store Bypass. > > > > The default behavior is unchanged. > > > > Signed-off-by: Josh Poimboeuf > > --- > > NOTE: This is based on top of Jeremy Linton's patches: > > https://lkml.kernel.org/r/20190410231237.52506-1-jeremy.linton@arm.com > > So I keep that out and we have to revisit that once the ARM64 stuff hits a > tree, right? I can have a branch with just the 4 first patches applied > which ARM64 folks can pull in when they apply Jeremy's patches before te > merge window. Yes, that would work for us, cheers. I should get to Jeremy's latest version next week and I'm certainly planning to get them queued up for 5.2. Will