From patchwork Fri Mar 18 09:45:28 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vasant Karasulli X-Patchwork-Id: 12785081 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 46D06C433EF for ; Fri, 18 Mar 2022 09:45:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234609AbiCRJq4 (ORCPT ); Fri, 18 Mar 2022 05:46:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44896 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232891AbiCRJqz (ORCPT ); Fri, 18 Mar 2022 05:46:55 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1E63F2C3DFE; Fri, 18 Mar 2022 02:45:37 -0700 (PDT) Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out2.suse.de (Postfix) with ESMTP id CD3571F38E; Fri, 18 Mar 2022 09:45:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1647596735; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=oGA/yvm/gqNdpwaPx6sBtB0hVGICo80CcKhGUxQPfB8=; b=qS/TaOvW+jrEBOjhneobfyyc0+JuCwZ692tU6w6TyswDa7P3Cyc52JAq0jQPjGcw0N/NcI LfinwTiWZgmgko+NPkErtKfq02RmpH0MCS40MiCpqMzwuxdHC8EVY6LCaaMou9rH1YwZMY tWHwv2WYhH2XVi+necqGlv/nChi6+OE= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1647596735; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=oGA/yvm/gqNdpwaPx6sBtB0hVGICo80CcKhGUxQPfB8=; b=e45uj0E5nYc794ludXFkBpocxN72v8cUw5gNPbWgJevgB6bjbEm+2j8I0wEmehJ0eOnFSD 3UUOtgSnU4l/+ZCg== Received: from vasant-suse.suse.de (unknown [10.163.24.178]) by relay2.suse.de (Postfix) with ESMTP id 62131A3B81; Fri, 18 Mar 2022 09:45:35 +0000 (UTC) From: Vasant Karasulli To: linux-kernel@vger.kernel.org, jroedel@suse.de, kvm@vger.kernel.org Cc: bp@alien8.de, x86@kernel.org, thomas.lendacky@amd.com, varad.gautam@suse.com, Vasant Karasulli Subject: [PATCH v6 0/4] x86/tests: Add tests for AMD SEV-ES #VC handling Date: Fri, 18 Mar 2022 10:45:28 +0100 Message-Id: <20220318094532.7023-1-vkarasulli@suse.de> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Hi All, This is the version 6 of the patch written to add tests for AMD SEV-ES #VC handling. This version attempts to address review comments to the previous version of the patch in https://lore.kernel.org/kvm/20220208162623.18368-1-vkarasulli@suse.de/. Changes in this version: 1. The patch in the previous version is split into 4 parts. 2. Constants in function sev_es_nae_mmio are replaced by macros. Thanks, Vasant Vasant Karasulli (4): x86/tests: Add Kconfig options for testing AMD SEV related features. x86/tests: Add KUnit based tests to validate Linux's VC handling for instructions cpuid and wbinvd. These tests: 1. install a kretprobe on the #VC handler (sev_es_ghcb_hv_call, to access GHCB before/after the resulting VMGEXIT). 2. trigger an NAE by executing either cpuid or wbinvd. 3. check that the kretprobe was hit with the right exit_code available in GHCB. x86/tests: Add KUnit based tests to validate Linux's VC handling for instructions accessing registers such as MSR and DR7. These tests: 1. install a kretprobe on the #VC handler (sev_es_ghcb_hv_call, to access GHCB before/after the resulting VMGEXIT). 2. trigger an NAE by accessing either MSR or DR7. 3. check that the kretprobe was hit with the right exit_code available in GHCB. x86/tests: Add KUnit based tests to validate Linux's VC handling for IO instructions. These tests: 1. install a kretprobe on the #VC handler (sev_es_ghcb_hv_call, to access GHCB before/after the resulting VMGEXIT). 2. trigger an NAE by issuing an IO instruction. 3. check that the kretprobe was hit with the right exit_code available in GHCB. arch/x86/Kbuild | 2 + arch/x86/Kconfig.debug | 16 ++++ arch/x86/kernel/Makefile | 7 ++ arch/x86/tests/Makefile | 3 + arch/x86/tests/sev-test-vc.c | 155 +++++++++++++++++++++++++++++++++++ 5 files changed, 183 insertions(+) create mode 100644 arch/x86/tests/Makefile create mode 100644 arch/x86/tests/sev-test-vc.c base-commit: 09688c0166e76ce2fb85e86b9d99be8b0084cdf9 prerequisite-patch-id: b74bc39d7ca69ad86b5f9090047c44ab039f4622 prerequisite-patch-id: a53a291b59b4ceaffa25a9a08dfa08b5a78a01b9 --- 2.32.0