Received: by 2002:a25:e74b:0:0:0:0:0 with SMTP id e72csp1702195ybh; Tue, 14 Jul 2020 05:14:24 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzppDn9AkKvpNXC9rfPeYdRS+BoHZZlD0s5VGESoPal5N3brM95+EP5Pvz7+1cVMr8UjySy X-Received: by 2002:a50:f384:: with SMTP id g4mr4028980edm.205.1594728864835; Tue, 14 Jul 2020 05:14:24 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1594728864; cv=none; d=google.com; s=arc-20160816; b=STfQqnR5YvxwPBLRl6RRzcYE3jhwFw8fNdYdBOHBf39S1Pyh3V0dYWN3SMJkEbyE/Q CAAMn3roOKNFfxJ3zld29eaMe0A748bUesInn5MK43vtNqGXZgcp9Y+/iURvi5OA/rId ktD4l7r1hcPTxlLDXU9GgZ1LUACOaWeW9y0DhwCFRWS96kOhkR9PxEz5cktwgMRtqOVX 0F3drhy8Aj84LJlrSmM7CTW0z9aW6zPBXE9nU8jp3e6NXOAsDF+tYXS+AsqcM/qfSFDd ki4AZdNRq/HjqY+dkp/jLtBnfS4UR+kVfn9HoRettb6n1uAqqLZ4jcW80xuGBwcXXXoo uFdQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=5byMjxLLAx9utw4W4jnstkJDQdwVuJiCvsOFil3Iv+Q=; b=bnLSAt4VXiE5BXKea20jq5CsFqGSQicBlFnBVMzzuHxGVbeyw3SKZYPLTiyfBMTN18 qzf5IQiVdYY5Q9pa4lLetGZjh3U/XItY2fP2GJ/L9ifglS73VPWPVk37p1na058XHV9r DM0NHVmhWmjXsf01zmtTG2P2JF6lc4BSy44izkPuzGtN2fPdpslYrZ85hwCHEUzLFcSM pYCTJDH+gYtAgWWEyeDhnM6FMOJCLLxoDXU1zValVx0iSGnTJwls3gt4Nu2mOqQ35OOh lu3yw942EDKTk8D/KTjOLH4OJTT7jTlCIzqnJtr93jLIPVZaywWwgF7nEBVJi0xiMyYP yIlg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=8bytes.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id w3si11439525edx.581.2020.07.14.05.14.00; Tue, 14 Jul 2020 05:14:24 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=8bytes.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728787AbgGNMMt (ORCPT + 99 others); Tue, 14 Jul 2020 08:12:49 -0400 Received: from 8bytes.org ([81.169.241.247]:54446 "EHLO theia.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728527AbgGNMLN (ORCPT ); Tue, 14 Jul 2020 08:11:13 -0400 Received: from cap.home.8bytes.org (p5b006776.dip0.t-ipconnect.de [91.0.103.118]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by theia.8bytes.org (Postfix) with ESMTPSA id A6713FD1; Tue, 14 Jul 2020 14:11:05 +0200 (CEST) From: Joerg Roedel To: x86@kernel.org Cc: Joerg Roedel , Joerg Roedel , Tom Lendacky , hpa@zytor.com, Andy Lutomirski , Dave Hansen , Peter Zijlstra , Jiri Slaby , Dan Williams , 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: [PATCH v4 59/75] x86/sev-es: Handle MONITOR/MONITORX Events Date: Tue, 14 Jul 2020 14:09:01 +0200 Message-Id: <20200714120917.11253-60-joro@8bytes.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200714120917.11253-1-joro@8bytes.org> References: <20200714120917.11253-1-joro@8bytes.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Tom Lendacky Implement a handler for #VC exceptions caused by MONITOR and MONITORX instructions. Signed-off-by: Tom Lendacky [ jroedel@suse.de: Adapt to #VC handling infrastructure ] Co-developed-by: Joerg Roedel Signed-off-by: Joerg Roedel --- arch/x86/kernel/sev-es.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c index 30d6161deada..c0977bdc400e 100644 --- a/arch/x86/kernel/sev-es.c +++ b/arch/x86/kernel/sev-es.c @@ -878,6 +878,16 @@ static enum es_result vc_handle_rdpmc(struct ghcb *ghcb, struct es_em_ctxt *ctxt return ES_OK; } +static enum es_result vc_handle_monitor(struct ghcb *ghcb, + struct es_em_ctxt *ctxt) +{ + /* + * Treat it as a NOP and do not leak a physical address to the + * hypervisor + */ + return ES_OK; +} + static enum es_result vc_handle_exitcode(struct es_em_ctxt *ctxt, struct ghcb *ghcb, unsigned long exit_code) @@ -914,6 +924,9 @@ static enum es_result vc_handle_exitcode(struct es_em_ctxt *ctxt, case SVM_EXIT_WBINVD: result = vc_handle_wbinvd(ghcb, ctxt); break; + case SVM_EXIT_MONITOR: + result = vc_handle_monitor(ghcb, ctxt); + break; case SVM_EXIT_NPF: result = vc_handle_mmio(ghcb, ctxt); break; -- 2.27.0