From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoffer Dall Subject: Re: [PATCH 0/2] arm{,64}/kvm: excise redundant cache maintenance Date: Thu, 1 Sep 2016 13:15:45 +0200 Message-ID: <20160901111545.GC10162@cbox> References: <1472573156-30414-1-git-send-email-mark.rutland@arm.com> <20160830180020.GB19315@leverpostej> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 3199D40F9B for ; Thu, 1 Sep 2016 07:05:16 -0400 (EDT) Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id G2EVlukDe+Kx for ; Thu, 1 Sep 2016 07:05:14 -0400 (EDT) Received: from mail-wm0-f52.google.com (mail-wm0-f52.google.com [74.125.82.52]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id C54BD40BDA for ; Thu, 1 Sep 2016 07:05:14 -0400 (EDT) Received: by mail-wm0-f52.google.com with SMTP id c133so72588687wmd.1 for ; Thu, 01 Sep 2016 04:13:25 -0700 (PDT) Content-Disposition: inline In-Reply-To: <20160830180020.GB19315@leverpostej> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu To: Mark Rutland Cc: marc.zyngier@arm.com, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org List-Id: kvmarm@lists.cs.columbia.edu On Tue, Aug 30, 2016 at 07:00:20PM +0100, Mark Rutland wrote: > On Tue, Aug 30, 2016 at 05:05:54PM +0100, Mark Rutland wrote: > > As noted in a jailhouse thread a short while ago [1,2], the presence of the > > virtualization extensions implies that page table walks are coherent, and do > > not require that updates are cleaned to the PoU. > > > > These patches remove the redundant maintenance and related infrastructure. > > > > As I do not have a suitably configured ARMv7 board, I have not been able to > > test the patches myself, and any testing would be appreciated. > > Having been lent a TC2 booting in Hyp mode, I've now given this a spin > with a few VMs, which I left running hackbench to fault in guest memory. > > All of that ran happily. > I've tested this on TC2 and CubieTruck as well, no problems as far as I can see. Applied. Thanks, -Christoffer From mboxrd@z Thu Jan 1 00:00:00 1970 From: christoffer.dall@linaro.org (Christoffer Dall) Date: Thu, 1 Sep 2016 13:15:45 +0200 Subject: [PATCH 0/2] arm{,64}/kvm: excise redundant cache maintenance In-Reply-To: <20160830180020.GB19315@leverpostej> References: <1472573156-30414-1-git-send-email-mark.rutland@arm.com> <20160830180020.GB19315@leverpostej> Message-ID: <20160901111545.GC10162@cbox> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Aug 30, 2016 at 07:00:20PM +0100, Mark Rutland wrote: > On Tue, Aug 30, 2016 at 05:05:54PM +0100, Mark Rutland wrote: > > As noted in a jailhouse thread a short while ago [1,2], the presence of the > > virtualization extensions implies that page table walks are coherent, and do > > not require that updates are cleaned to the PoU. > > > > These patches remove the redundant maintenance and related infrastructure. > > > > As I do not have a suitably configured ARMv7 board, I have not been able to > > test the patches myself, and any testing would be appreciated. > > Having been lent a TC2 booting in Hyp mode, I've now given this a spin > with a few VMs, which I left running hackbench to fault in guest memory. > > All of that ran happily. > I've tested this on TC2 and CubieTruck as well, no problems as far as I can see. Applied. Thanks, -Christoffer