From patchwork Tue Feb 21 16:36:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mingwei Zhang X-Patchwork-Id: 655857 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 376EBC678DB for ; Tue, 21 Feb 2023 16:37:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234811AbjBUQhe (ORCPT ); Tue, 21 Feb 2023 11:37:34 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35238 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234772AbjBUQha (ORCPT ); Tue, 21 Feb 2023 11:37:30 -0500 Received: from mail-pj1-x1049.google.com (mail-pj1-x1049.google.com [IPv6:2607:f8b0:4864:20::1049]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5EF972D144 for ; Tue, 21 Feb 2023 08:37:26 -0800 (PST) Received: by mail-pj1-x1049.google.com with SMTP id o17-20020a17090ab89100b00230aa3c1350so1616327pjr.2 for ; Tue, 21 Feb 2023 08:37:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=LHzOHHZRF0Z0PxEe7g90IRKekQBPW5kSPBGZ896mCAw=; b=iYq/M/swxMz4Ajz5CWey7J9Cn2hGpOfZNKoeQVqLmLqWDDu83kf7cKxB5F54bE8hgY 6vq352hL3hkuyr+xvGGBPsMBFVU/kUaywZAPGbjpw45pwBVNsUBhXvaHp3p5ij76cNyt rDAfZbAgReB4EQSAA7OwInJ6lY9U5BvKp/01wMwOxtpg44NJRhHT8Xq4rTmDcrsxjTti pfGVpDEXEfEJGnxNtzFVmYPT2BiwBWDwDKgsfrnnVyf/fxGl4166/OjhO4zVgoSeAI5l SvSQxAOupvX+FgQXWxfzi4j2RPAPPbmJeclJTu28XTV+YePpR+2e/aj+jRqUzJYVs/du fzmQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=LHzOHHZRF0Z0PxEe7g90IRKekQBPW5kSPBGZ896mCAw=; b=Oawo25hl7156EJkT45tDK6jc/kOscxxjj0kFwWREEVwRQdGwDf0ZF1a4ZkD/NgyaG/ UV5FhR+08IKbgs/jIKsgCH8jJCihl2JydRK2jPLbFQq37S7EKNb/QQfTTM29Cu3v6VbP JTnS/VgeFy8zpe1YRFzugXpyhys4vJi34Qv4FXX1hlK75dne9fhvhsrjUcSmd4t0btf6 9FyJAxC6NgQogj12mQAERDw4r37xwntbyIkIdTfiIDQicA7Ud/9EF4SoM4hZAjfXg35W iVXI5SB3+uAUD9hHIni767sXqnNK6eztVP5XdVB3H5QtO13CSuW3uHxtnfH/fAVobJLD +9ZA== X-Gm-Message-State: AO0yUKU49u4kQKh8OFNuNxtAHcMjKLTH38s6Lwd4KJUhJkEwkOxxmwiN Q8B+sgQbbhSjlp4MCzP0gJgGpxoMS6oC X-Google-Smtp-Source: AK7set/FsPqQ8rlzY7E1G6gdIEFDYIPaZx1jD1gvFI1btYAhTJ4yElO3zkb5t9OHD55Nxe6cLFjy5KIM8l9A X-Received: from mizhang-super.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:1071]) (user=mizhang job=sendgmr) by 2002:a63:3344:0:b0:502:e48d:6ea7 with SMTP id z65-20020a633344000000b00502e48d6ea7mr9485pgz.10.1676997445850; Tue, 21 Feb 2023 08:37:25 -0800 (PST) Reply-To: Mingwei Zhang Date: Tue, 21 Feb 2023 16:36:47 +0000 In-Reply-To: <20230221163655.920289-1-mizhang@google.com> Mime-Version: 1.0 References: <20230221163655.920289-1-mizhang@google.com> X-Mailer: git-send-email 2.39.2.637.g21b0678d19-goog Message-ID: <20230221163655.920289-6-mizhang@google.com> Subject: [PATCH v3 05/13] KVM: selftests: x86: Add check of CR0.TS in the #NM handler in amx_test From: Mingwei Zhang To: Sean Christopherson , Paolo Bonzini , Thomas Gleixner Cc: "H. Peter Anvin" , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-kselftest@vger.kernel.org, Mingwei Zhang , Jim Mattson , Venkatesh Srinivas , Aaron Lewis , "Chang S. Bae" , Chao Gao Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Add check of CR0.TS[bit 3] before the check of IA32_XFD_ERR in the #NM handler in amx_test. This is because XFD may not be the only reason of the IA32_XFD MSR and the bitmap corresponding to the state components required by the faulting instruction." (Intel SDM vol 1. Section 13.14) Add the missing check of CR0.TS. Signed-off-by: Mingwei Zhang --- tools/testing/selftests/kvm/x86_64/amx_test.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/kvm/x86_64/amx_test.c b/tools/testing/selftests/kvm/x86_64/amx_test.c index ba8c0afdbac8..ac49b14460b6 100644 --- a/tools/testing/selftests/kvm/x86_64/amx_test.c +++ b/tools/testing/selftests/kvm/x86_64/amx_test.c @@ -216,6 +216,7 @@ void guest_nm_handler(struct ex_regs *regs) { /* Check if #NM is triggered by XFEATURE_MASK_XTILEDATA */ GUEST_SYNC(7); + GUEST_ASSERT((get_cr0() & X86_CR0_TS) == 0); GUEST_ASSERT(rdmsr(MSR_IA32_XFD_ERR) == XFEATURE_MASK_XTILEDATA); GUEST_SYNC(8); GUEST_ASSERT(rdmsr(MSR_IA32_XFD_ERR) == XFEATURE_MASK_XTILEDATA);