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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E3498C433EF for ; Mon, 11 Oct 2021 09:48:05 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id 5F0CA60D07 for ; Mon, 11 Oct 2021 09:48:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 5F0CA60D07 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id F2971400D1; Mon, 11 Oct 2021 05:48:04 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu 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 Rd429Qolk7WD; Mon, 11 Oct 2021 05:48:03 -0400 (EDT) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id DA3C24B0B8; Mon, 11 Oct 2021 05:48:03 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 7B2774B090 for ; Mon, 11 Oct 2021 05:48:02 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu 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 JO9S66oljljn for ; Mon, 11 Oct 2021 05:48:01 -0400 (EDT) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id 635EA400D1 for ; Mon, 11 Oct 2021 05:48:01 -0400 (EDT) Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6521560EE2; Mon, 11 Oct 2021 09:48:00 +0000 (UTC) Received: from sofa.misterjones.org ([185.219.108.64] helo=why.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1mZruY-00Fydk-9x; Mon, 11 Oct 2021 10:47:58 +0100 Date: Mon, 11 Oct 2021 10:47:57 +0100 Message-ID: <87sfx7q4du.wl-maz@kernel.org> From: Marc Zyngier To: Alexandru Elisei Subject: Re: [PATCH 0/2] KVM: arm64: Minor improvements to RAZ register handling In-Reply-To: <20210927124911.191729-1-alexandru.elisei@arm.com> References: <20210927124911.191729-1-alexandru.elisei@arm.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/27.1 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: alexandru.elisei@arm.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, james.morse@arm.com, suzuki.poulose@arm.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Cc: kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu Hi Alexandru, On Mon, 27 Sep 2021 13:49:09 +0100, Alexandru Elisei wrote: > > What sparked these two small patches is the series that fixed the PMU reset > values and their visibility from userspace, more specifically the > discussion around the patch that removed the PMSWINC_EL0 shadow register > [1]. > > The patches are straightforward cleanups without any changes in > functionality. > > Tested on a rockpro64, by running kvm-unit-tests under qemu. > > [1] https://www.spinics.net/lists/kvm-arm/msg47976.html > > Alexandru Elisei (2): > KVM: arm64: Return early from read_id_reg() if register is RAZ > KVM: arm64: Use get_raz_reg() for userspace reads of PMSWINC_EL0 > > arch/arm64/kvm/sys_regs.c | 18 ++++++++++++++++-- > 1 file changed, 16 insertions(+), 2 deletions(-) > If you are going to respin this one, now would be the time! :-) Thanks, M. -- Without deviation from the norm, progress is not possible. _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm