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 X-Spam-Level: X-Spam-Status: No, score=-8.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 683D6C433DB for ; Wed, 31 Mar 2021 04:59:07 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A46AE61969 for ; Wed, 31 Mar 2021 04:59:06 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A46AE61969 Authentication-Results: mail.kernel.org; dmarc=pass (p=none dis=none) header.from=ozlabs.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4F9DcT2Kssz3c88 for ; Wed, 31 Mar 2021 15:59:05 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; secure) header.d=ozlabs.org header.i=@ozlabs.org header.a=rsa-sha256 header.s=201707 header.b=vSoQ47XO; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org (client-ip=2401:3900:2:1::2; helo=ozlabs.org; envelope-from=paulus@ozlabs.org; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=ozlabs.org header.i=@ozlabs.org header.a=rsa-sha256 header.s=201707 header.b=vSoQ47XO; dkim-atps=neutral Received: from ozlabs.org (bilbo.ozlabs.org [IPv6:2401:3900:2:1::2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4F9Dc20V2Yz2xxn for ; Wed, 31 Mar 2021 15:58:42 +1100 (AEDT) Received: by ozlabs.org (Postfix, from userid 1003) id 4F9Dc15vyQz9sWX; Wed, 31 Mar 2021 15:58:41 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ozlabs.org; s=201707; t=1617166721; bh=1Jp2PVYuBwxl9vR5J6ojXLJS2rIfGO+/7iEhzEz4i1o=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=vSoQ47XO0dYsl0+qzBNZxQdkJD6eb8YSctBF9MF5c5z8E0O65eE2BpsvvntgrZDca 1aPkpWlPW2BJsfnkzQo8Da44xc0yq0BG1mMZpw4i4SCWq7bUEAO+cT3QrR3yQ9SYqE 1bC7TOqqPjxMjEyjqI/OlV+ELiQXxdNrPOlz9uA1QFEUg7mwC3432daWIddv473Stg PwOkLH4zGfPPmVfu7uDG8yKCPR48ybjYGJHz27HQHy1718HBb9BsUyLHQnEHGXKj1R DMCjv/ukgdYSBZz4GnplBj7/ncF/unU9L2KOgftl6diMmItBDWmDpIXq9oxB7ry8sw GTo7EfSqmw7Yg== Date: Wed, 31 Mar 2021 15:58:29 +1100 From: Paul Mackerras To: Nicholas Piggin Subject: Re: [PATCH v4 11/46] KVM: PPC: Book3S HV: Ensure MSR[HV] is always clear in guest MSR Message-ID: References: <20210323010305.1045293-1-npiggin@gmail.com> <20210323010305.1045293-12-npiggin@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210323010305.1045293-12-npiggin@gmail.com> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linuxppc-dev@lists.ozlabs.org, kvm-ppc@vger.kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Tue, Mar 23, 2021 at 11:02:30AM +1000, Nicholas Piggin wrote: > Rather than clear the HV bit from the MSR at guest entry, make it clear > that the hypervisor does not allow the guest to set the bit. > > The HV clear is kept in guest entry for now, but a future patch will > warn if it's not present. Will warn if it *is* present, surely? > Signed-off-by: Nicholas Piggin Acked-by: Paul Mackerras