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=-13.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 5AEF7C433ED for ; Mon, 19 Apr 2021 10:10:48 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id C56DF61157 for ; Mon, 19 Apr 2021 10:10:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C56DF61157 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=shutemov.name Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id ED4236B0036; Mon, 19 Apr 2021 06:10:46 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id EAB596B006E; Mon, 19 Apr 2021 06:10:46 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D4A966B0070; Mon, 19 Apr 2021 06:10:46 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0149.hostedemail.com [216.40.44.149]) by kanga.kvack.org (Postfix) with ESMTP id B9C9F6B0036 for ; Mon, 19 Apr 2021 06:10:46 -0400 (EDT) Received: from smtpin20.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 70C80582C for ; Mon, 19 Apr 2021 10:10:46 +0000 (UTC) X-FDA: 78048697692.20.A1DF06D Received: from mail-lf1-f54.google.com (mail-lf1-f54.google.com [209.85.167.54]) by imf07.hostedemail.com (Postfix) with ESMTP id DD084A0003AF for ; Mon, 19 Apr 2021 10:10:45 +0000 (UTC) Received: by mail-lf1-f54.google.com with SMTP id n138so55148557lfa.3 for ; Mon, 19 Apr 2021 03:10:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=shutemov-name.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=zu9j1wjDjVkPmp9+MDbUYSq/opn21hdEYi2SoFE0G38=; b=2LjTTSlb/HS0t4OCyCPR5n54BZUrC67zqEW9gNRUxmv8X0KzjAkpqXGsW5TKWl7fRW V+zzwiuaQqljXyBZTDlWxrL3VpESCGckDvZEprHjil56QDYLKqoufkWOB+Z7w8LRjNt5 v3Zgwt639jnsOrP9EUIrG40W6F2wNMYoWiRP6JbYiasJGduQklPnbLecz8d8HhwwIXuE btcog1szy30k0xb7odbF4ehAkhrNSUgnTgdacZ/UiCbFCvRAp5s9O7t9lK5J7LtTGBN2 NsFIBJVO09qYDVLg2WB0VwNzWyklYM17JZHxmwAIj3DciLZFIaj7VPL4tO7FQh1wcQNg sKVA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=zu9j1wjDjVkPmp9+MDbUYSq/opn21hdEYi2SoFE0G38=; b=lkd9zpWv+BU6UDo9x3aYrWX+XLURwQ2rNcVttnkshHEblDV7Le4MuRmK1rHZBjsBNJ 6YURgnD662cG6hWfzR4Ww9kuMVEOxXZL+7EjIJ6x07PXyXZ+7yed9NGD08uKu7QqonMI 4WgKLj1APsbMDKaFbv1i+NE9gsChm2pSoqFGuLZNgKVV0fVjIAtSoHbFEQVNc18Me59j OWpujFAN3zoTI2avrwmEtln+r4VPTo+vmKFnKeARV7Aq97UgrR7+hCm1JVO8pecO+rdy JQNikhCZN1UExz0yFwePiVsNf+qm5TjKcCPmqvSo0G6Kb5zSQJC618g5de8bgG/QBCTi k4KQ== X-Gm-Message-State: AOAM531o7KQZnT0LPnKxQ8rz/HPVefN3UCvF4zuWPw+4+wcdN5RKvPiQ 3eJ9jDG65vvjEfaFyaFRz/usag== X-Google-Smtp-Source: ABdhPJyUF3dNClX1XwBoeI6qAE9kwKRdTk+Rcod7QjPwhM1cLAn5iDwDJp3HXyxxIfQzSrHVEDuGWw== X-Received: by 2002:a05:6512:1288:: with SMTP id u8mr11575728lfs.319.1618827044344; Mon, 19 Apr 2021 03:10:44 -0700 (PDT) Received: from box.localdomain ([86.57.175.117]) by smtp.gmail.com with ESMTPSA id k2sm1777953lfg.107.2021.04.19.03.10.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Apr 2021 03:10:43 -0700 (PDT) Received: by box.localdomain (Postfix, from userid 1000) id D293C102567; Mon, 19 Apr 2021 13:10:42 +0300 (+03) Date: Mon, 19 Apr 2021 13:10:42 +0300 From: "Kirill A. Shutemov" To: Borislav Petkov Cc: "Kirill A. Shutemov" , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Sean Christopherson , Jim Mattson , David Rientjes , "Edgecombe, Rick P" , "Kleen, Andi" , "Yamahata, Isaku" , Erdem Aktas , Steve Rutherford , Peter Gonda , David Hildenbrand , x86@kernel.org, kvm@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [RFCv2 02/13] x86/kvm: Introduce KVM memory protection feature Message-ID: <20210419101042.txf6pj3kr6z5bkh5@box.shutemov.name> References: <20210416154106.23721-1-kirill.shutemov@linux.intel.com> <20210416154106.23721-3-kirill.shutemov@linux.intel.com> <20210416161030.GC22348@zn.tnic> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210416161030.GC22348@zn.tnic> X-Rspamd-Queue-Id: DD084A0003AF X-Stat-Signature: rdyjqtkheozz9i5pyr4fzn7b8dmwk3kt X-Rspamd-Server: rspam02 Received-SPF: none (shutemov.name>: No applicable sender policy available) receiver=imf07; identity=mailfrom; envelope-from=""; helo=mail-lf1-f54.google.com; client-ip=209.85.167.54 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1618827045-981696 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, Apr 16, 2021 at 06:10:30PM +0200, Borislav Petkov wrote: > On Fri, Apr 16, 2021 at 06:40:55PM +0300, Kirill A. Shutemov wrote: > > Provide basic helpers, KVM_FEATURE, CPUID flag and a hypercall. > > > > Host side doesn't provide the feature yet, so it is a dead code for now. > > > > Signed-off-by: Kirill A. Shutemov > > --- > > arch/x86/include/asm/cpufeatures.h | 1 + > > arch/x86/include/asm/kvm_para.h | 5 +++++ > > arch/x86/include/uapi/asm/kvm_para.h | 3 ++- > > arch/x86/kernel/kvm.c | 17 +++++++++++++++++ > > include/uapi/linux/kvm_para.h | 3 ++- > > 5 files changed, 27 insertions(+), 2 deletions(-) > > > > diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h > > index 84b887825f12..d8f3d2619913 100644 > > --- a/arch/x86/include/asm/cpufeatures.h > > +++ b/arch/x86/include/asm/cpufeatures.h > > @@ -238,6 +238,7 @@ > > #define X86_FEATURE_VMW_VMMCALL ( 8*32+19) /* "" VMware prefers VMMCALL hypercall instruction */ > > #define X86_FEATURE_SEV_ES ( 8*32+20) /* AMD Secure Encrypted Virtualization - Encrypted State */ > > #define X86_FEATURE_VM_PAGE_FLUSH ( 8*32+21) /* "" VM Page Flush MSR is supported */ > > +#define X86_FEATURE_KVM_MEM_PROTECTED ( 8*32+22) /* "" KVM memory protection extension */ > > That feature bit is still unused. Sorry. Will drop it. -- Kirill A. Shutemov