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=-14.3 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_IN_DEF_DKIM_WL 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 4E070C433E0 for ; Sat, 30 May 2020 02:08:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 21D2620707 for ; Sat, 30 May 2020 02:08:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="Jc2Qe6+f" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728860AbgE3CIu (ORCPT ); Fri, 29 May 2020 22:08:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36852 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728817AbgE3CIt (ORCPT ); Fri, 29 May 2020 22:08:49 -0400 Received: from mail-io1-xd42.google.com (mail-io1-xd42.google.com [IPv6:2607:f8b0:4864:20::d42]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9342CC03E969 for ; Fri, 29 May 2020 19:08:48 -0700 (PDT) Received: by mail-io1-xd42.google.com with SMTP id q8so1376331iow.7 for ; Fri, 29 May 2020 19:08:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=dN58wg3nEA9rldEIDlifhFJsdB2tbWLhvBZmgq9Fpto=; b=Jc2Qe6+f9rFpviKD4nVc6kV2khBM7inMHFWAV3Qm7elegCyxfFVGRcHxq/J5owBV9A egyoxYdPg1H2AIlEMxnpjmMPHeHiQKkgUbIqwOPMiYRs3tSXA2Sjzusa1G0yAVs4dqZZ CO7TCR7OWs4/RiupwbIJ2b7RmXY/B+M+KWJfbBjAMug9uObCEovwWRaXncVxCJJxVPYn JLXBWYvXIgwL9CNTPYf5KgIRkL5kyH3XFB09fgsGsHbEeWsjRbQTfAekrHqR/3XkY35X yfjk+NKpW1qLplGRy1FMilzF5bB1wCIN4VFojLsza5qGdLcAhnSAK7niB48Tm3wsklca fF6Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=dN58wg3nEA9rldEIDlifhFJsdB2tbWLhvBZmgq9Fpto=; b=LJnjOjEbfULM92lnPwVpGKg95xP4Uu/65rff1fMkoftw2X0stjZi4hy+SsPc5Oyd5j MR/jVKJlxhObNUpbx99zx5pHcCn4vVvR8VSG6hpYFwv9KpGCHot3cE7PAWf7aCjSxRi0 B40X0j9cqruRon+XgP0Cza1D6J3zlgiPoyCa8k74Iv9w4QvIyfOjlfDh0i0038cFV73T CT35jOZ5l+zV0tVyQg8RR9YgVMKT1LlSEgzKX6TtgR2tiTSFDNSJKPVETxlcc0Bs38EQ bS+cr0diKKhPZGyU8IFnekWfdhroSgtSn54Eeh62JHKihxUXD/njICUxoCHGzPyiut9p VeLA== X-Gm-Message-State: AOAM533y7VbRDuDTnnDll1/L729l98TlJSUrZFQ1RWC9+9HXE5dgp8GJ JXTuZr4i2NYsYSCVB1RjbfaQTnt5CKObKaj7sz/FiQ== X-Google-Smtp-Source: ABdhPJwIZ0rq8DVrs10SZZhuOkSscD7hplgkOhNO5MiFM9hNmmv+Q9+faNxj8iyeSPJZafjcQlb3UDI9l1joNcRFQKk= X-Received: by 2002:a5d:8914:: with SMTP id b20mr9520538ion.34.1590804527793; Fri, 29 May 2020 19:08:47 -0700 (PDT) MIME-Version: 1.0 References: <02cde03d5754c84cfa0dc485f62d85507a2a9dd5.1588711355.git.ashish.kalra@amd.com> In-Reply-To: <02cde03d5754c84cfa0dc485f62d85507a2a9dd5.1588711355.git.ashish.kalra@amd.com> From: Steve Rutherford Date: Fri, 29 May 2020 19:08:11 -0700 Message-ID: Subject: Re: [PATCH v8 16/18] KVM: x86: Mark _bss_decrypted section variables as decrypted in page encryption bitmap. To: Ashish Kalra Cc: Paolo Bonzini , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Joerg Roedel , Borislav Petkov , Tom Lendacky , X86 ML , KVM list , LKML , David Rientjes , Venu Busireddy , Brijesh Singh Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, May 5, 2020 at 2:20 PM Ashish Kalra wrote: > > From: Ashish Kalra > > Ensure that _bss_decrypted section variables such as hv_clock_boot and > wall_clock are marked as decrypted in the page encryption bitmap if > sev liv migration is supported. > > Signed-off-by: Ashish Kalra > --- > arch/x86/kernel/kvmclock.c | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > > diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c > index 34b18f6eeb2c..65777bf1218d 100644 > --- a/arch/x86/kernel/kvmclock.c > +++ b/arch/x86/kernel/kvmclock.c > @@ -334,6 +334,18 @@ void __init kvmclock_init(void) > pr_info("kvm-clock: Using msrs %x and %x", > msr_kvm_system_time, msr_kvm_wall_clock); > > + if (sev_live_migration_enabled()) { > + unsigned long nr_pages; > + /* > + * sizeof(hv_clock_boot) is already PAGE_SIZE aligned > + */ > + early_set_mem_enc_dec_hypercall((unsigned long)hv_clock_boot, > + 1, 0); > + nr_pages = DIV_ROUND_UP(sizeof(wall_clock), PAGE_SIZE); > + early_set_mem_enc_dec_hypercall((unsigned long)&wall_clock, > + nr_pages, 0); > + } > + > this_cpu_write(hv_clock_per_cpu, &hv_clock_boot[0]); > kvm_register_clock("primary cpu clock"); > pvclock_set_pvti_cpu0_va(hv_clock_boot); > -- > 2.17.1 > Reviewed-by: Steve Rutherford