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=-3.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no 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 E3EC5C43461 for ; Mon, 7 Sep 2020 17:00:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AB9FB208C7 for ; Mon, 7 Sep 2020 17:00:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alien8.de header.i=@alien8.de header.b="KXJWYBon" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731232AbgIGQ7F (ORCPT ); Mon, 7 Sep 2020 12:59:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38030 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730592AbgIGQ7C (ORCPT ); Mon, 7 Sep 2020 12:59:02 -0400 Received: from mail.skyhub.de (mail.skyhub.de [IPv6:2a01:4f8:190:11c2::b:1457]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EFA7DC061573; Mon, 7 Sep 2020 09:58:59 -0700 (PDT) Received: from zn.tnic (p200300ec2f090900c4f00348aacf37a5.dip0.t-ipconnect.de [IPv6:2003:ec:2f09:900:c4f0:348:aacf:37a5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id EA64B1EC00F4; Mon, 7 Sep 2020 18:58:57 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1599497938; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=f8SfAAyXeqxq2AQb205NNpHyD9AfmQyyAEljoRCFv6k=; b=KXJWYBon+qIU3Dc1jqyEl0uksmyVwjboVTQXyWOm6FdZvFVbSLGKec6ejmWNdxVLAbIvwp WFdL1LkX10BO5BGgpGw/Ma5JeXuDn2PCoEpdZMW/06MnMg6plGn/rQ/eG7Ad1IIX/E/Ndk LYheDfFOoz3D0esSwEqyajhwcrvprWo= Date: Mon, 7 Sep 2020 18:58:51 +0200 From: Borislav Petkov To: Joerg Roedel Cc: x86@kernel.org, Joerg Roedel , hpa@zytor.com, Andy Lutomirski , Dave Hansen , Peter Zijlstra , Jiri Slaby , Dan Williams , Tom Lendacky , Juergen Gross , Kees Cook , David Rientjes , Cfir Cohen , Erdem Aktas , Masami Hiramatsu , Mike Stunes , Sean Christopherson , Martin Radev , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org Subject: Re: [PATCH v7 19/72] x86/boot/compressed/64: Add stage1 #VC handler Message-ID: <20200907165851.GE16029@zn.tnic> References: <20200907131613.12703-1-joro@8bytes.org> <20200907131613.12703-20-joro@8bytes.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20200907131613.12703-20-joro@8bytes.org> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Mon, Sep 07, 2020 at 03:15:20PM +0200, Joerg Roedel wrote: > +static inline u64 sev_es_rd_ghcb_msr(void) > +{ > + unsigned long low, high; > + > + asm volatile("rdmsr\n" : "=a" (low), "=d" (high) : > + "c" (MSR_AMD64_SEV_ES_GHCB)); > + > + return ((high << 32) | low); > +} > + > +static inline void sev_es_wr_ghcb_msr(u64 val) > +{ > + u32 low, high; > + > + low = val & 0xffffffffUL; > + high = val >> 32; > + > + asm volatile("wrmsr\n" : : "c" (MSR_AMD64_SEV_ES_GHCB), ^^ No need for that newline and the one above. I've zapped it while applying. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette