From patchwork Tue Feb 11 13:52:42 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joerg Roedel X-Patchwork-Id: 11375579 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8FF8692A for ; Tue, 11 Feb 2020 13:55:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 78E402467A for ; Tue, 11 Feb 2020 13:55:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729820AbgBKNzG (ORCPT ); Tue, 11 Feb 2020 08:55:06 -0500 Received: from 8bytes.org ([81.169.241.247]:51838 "EHLO theia.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729582AbgBKNx2 (ORCPT ); Tue, 11 Feb 2020 08:53:28 -0500 Received: by theia.8bytes.org (Postfix, from userid 1000) id C936BE95; Tue, 11 Feb 2020 14:53:15 +0100 (CET) From: Joerg Roedel To: x86@kernel.org Cc: hpa@zytor.com, Andy Lutomirski , Dave Hansen , Peter Zijlstra , Thomas Hellstrom , Jiri Slaby , Dan Williams , Tom Lendacky , Juergen Gross , Kees Cook , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, Joerg Roedel , Joerg Roedel Subject: [PATCH 48/62] x86/sev-es: Handle MONITOR/MONITORX Events Date: Tue, 11 Feb 2020 14:52:42 +0100 Message-Id: <20200211135256.24617-49-joro@8bytes.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200211135256.24617-1-joro@8bytes.org> References: <20200211135256.24617-1-joro@8bytes.org> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@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 | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c index d5a14f277adb..865f510d11ba 100644 --- a/arch/x86/kernel/sev-es.c +++ b/arch/x86/kernel/sev-es.c @@ -318,6 +318,21 @@ static enum es_result handle_invd(struct ghcb *ghcb, struct es_em_ctxt *ctxt) return ghcb_hv_call(ghcb, ctxt, SVM_EXIT_INVD, 0, 0); } +static enum es_result handle_monitor(struct ghcb *ghcb, struct es_em_ctxt *ctxt) +{ + phys_addr_t monitor_pa; + pgd_t *pgd; + + pgd = __va(read_cr3_pa()); + monitor_pa = es_slow_virt_to_phys(ghcb, ctxt->regs->ax); + + ghcb_set_rax(ghcb, monitor_pa); + ghcb_set_rcx(ghcb, ctxt->regs->cx); + ghcb_set_rdx(ghcb, ctxt->regs->dx); + + return ghcb_hv_call(ghcb, ctxt, SVM_EXIT_MONITOR, 0, 0); +} + static enum es_result handle_vc_exception(struct es_em_ctxt *ctxt, struct ghcb *ghcb, unsigned long exit_code, @@ -354,6 +369,9 @@ static enum es_result handle_vc_exception(struct es_em_ctxt *ctxt, case SVM_EXIT_WBINVD: result = handle_wbinvd(ghcb, ctxt); break; + case SVM_EXIT_MONITOR: + result = handle_monitor(ghcb, ctxt); + break; case SVM_EXIT_NPF: result = handle_mmio(ghcb, ctxt); break;