From patchwork Mon Dec 18 19:06:30 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Adalbert_Laz=C4=83r?= X-Patchwork-Id: 10121719 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id DA35260390 for ; Mon, 18 Dec 2017 19:07:49 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C936828C67 for ; Mon, 18 Dec 2017 19:07:49 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id BE56C28C6C; Mon, 18 Dec 2017 19:07:49 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 742D028C7A for ; Mon, 18 Dec 2017 19:07:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760315AbdLRTHr (ORCPT ); Mon, 18 Dec 2017 14:07:47 -0500 Received: from mx02.bbu.dsd.mx.bitdefender.com ([91.199.104.133]:54736 "EHLO mx02.buh.bitdefender.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933848AbdLRTHP (ORCPT ); Mon, 18 Dec 2017 14:07:15 -0500 Comment: DomainKeys? See http://domainkeys.sourceforge.net/ DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=bitdefender.com; b=U2tNyQHEWJpXblnfGMRk2BlEjvd+yysvpbMEowpBYOlWD0uXWxkW7FMsKMwDDZGS3a8B99aJ+JavPUjUAjzvYvBLe7HTrzjLakSAfn7TywAYxes2CufzrwBcb+8N6HOg1AFJMP66uNcWqQYnvnnNQFcpD5kJ8VaL08ao5ySvVcqtr3Rz96MynKID97Ru1pX6M0+yzZVd3pyeNHhYz4/oqT8b4yp78ikpSzFOss1qZfeS8FbMiiuNDYnMsEQhDl8uU33NST7U60I1QQS1PsZpXtAFr8gmikrvze94vaqSa6d4q2BAFgGlZdIT6Z15fZMCznf7LAIQqLXpIHJHpHp5RA==; h=Received:Received:Received:Received:From:To:Cc:Subject:Date:Message-Id:X-Mailer:In-Reply-To:References:MIME-Version:Content-Type:Content-Transfer-Encoding; DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=bitdefender.com; h=from:to :cc:subject:date:message-id:in-reply-to:references:mime-version :content-type:content-transfer-encoding; s=default; bh=6oQSxzuob 6BHsRa3QwXYbag+pjY=; b=uW+UuuleTXl1zmX9yyNBVOvqEw5aHMS8QpnVDJfk8 ylIfiVquqonPz9gdLbhA8dBUPbG+4AYsZjnodQ0ie0vrFfq/cKzqtoqK5H/ZTaS4 K91sOaw/NUaNezZu1+c2BDggTq8KXVsqf5C9xcfxQuFH8E5BGR2CpzykjofLSG+k i+eRNLlCoE/hUV95IOD7Cu7ZZ270exYa1T67xNUpFJOJM/brHGa4edeBIvS0SwGP I7224ldcjJZldDJtpQdu5JNfd/3YbmJVcX4AgD08IIHIRN+X7CYkbpQlGvEqdaXs KBwWJdl9XWp2ejcCGsHhcuBL3R73SimuR67IbziCM5qDQ== Received: (qmail 30756 invoked from network); 18 Dec 2017 21:06:56 +0200 Received: from mx-robo.bitdefender.biz (HELO mx01robo.bbu.dsd.mx.bitdefender.com) (10.17.80.60) by mx02.buh.bitdefender.com with AES128-GCM-SHA256 encrypted SMTP; 18 Dec 2017 21:06:56 +0200 Received: (qmail 31354 invoked from network); 18 Dec 2017 21:06:56 +0200 Received: from unknown (HELO host.bbu.bitdefender.biz) (10.10.193.111) by mx01robo.bbu.dsd.mx.bitdefender.com with SMTP; 18 Dec 2017 21:06:56 +0200 From: =?UTF-8?q?Adalber=20Laz=C4=83r?= To: kvm@vger.kernel.org Cc: linux-mm@kvack.org, Paolo Bonzini , =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= , Xiao Guangrong , =?UTF-8?q?Mihai=20Don=C8=9Bu?= , Adalbert Lazar Subject: [RFC PATCH v4 06/18] kvm: vmx: export the availability of EPT views Date: Mon, 18 Dec 2017 21:06:30 +0200 Message-Id: <20171218190642.7790-7-alazar@bitdefender.com> X-Mailer: git-send-email 2.14.2 In-Reply-To: <20171218190642.7790-1-alazar@bitdefender.com> References: <20171218190642.7790-1-alazar@bitdefender.com> MIME-Version: 1.0 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Adalbert Lazar This is used to validate the KVMI_GET_PAGE_ACCESS and KVMI_SET_PAGE_ACCESS commands when the guest introspection tool selects a different EPT view. Signed-off-by: Adalbert Lazăr --- arch/x86/include/asm/kvm_host.h | 1 + arch/x86/kvm/vmx.c | 2 ++ arch/x86/kvm/x86.c | 3 +++ 3 files changed, 6 insertions(+) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 239eb628f8fb..2cf03ed181e6 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1162,6 +1162,7 @@ extern u64 kvm_max_tsc_scaling_ratio; extern u64 kvm_default_tsc_scaling_ratio; extern u64 kvm_mce_cap_supported; +extern bool kvm_eptp_switching_supported; enum emulation_result { EMULATE_DONE, /* no further processing */ diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 5487e0242030..093a2e1f7ea6 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -6898,6 +6898,8 @@ static __init int hardware_setup(void) kvm_x86_ops->cancel_hv_timer = NULL; } + kvm_eptp_switching_supported = cpu_has_vmx_vmfunc(); + kvm_set_posted_intr_wakeup_handler(wakeup_handler); kvm_mce_cap_supported |= MCG_LMCE_P; diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 4b0c3692386d..e7db70ac1f82 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -138,6 +138,9 @@ module_param(lapic_timer_advance_ns, uint, S_IRUGO | S_IWUSR); static bool __read_mostly vector_hashing = true; module_param(vector_hashing, bool, S_IRUGO); +bool __read_mostly kvm_eptp_switching_supported; +EXPORT_SYMBOL_GPL(kvm_eptp_switching_supported); + #define KVM_NR_SHARED_MSRS 16 struct kvm_shared_msrs_global {