From mboxrd@z Thu Jan 1 00:00:00 1970 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 87267C28CF5 for ; Wed, 26 Jan 2022 15:22:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242770AbiAZPW2 (ORCPT ); Wed, 26 Jan 2022 10:22:28 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:51843 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242757AbiAZPWV (ORCPT ); Wed, 26 Jan 2022 10:22:21 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1643210541; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=h7YfDmRYUeL6C1bhQyvjZ7nwHEcc8cuHsnQU1AfTtDw=; b=ddWrEGh9UeankD1l7TRwRDFNfPo9q4mwH9jXCJsTNRDgCZOcz4J64yPXQ7IQqz6HmqooO1 hKq8PbcwOdLqLb4n5J7tafQzeCgzs08Nv/x0r0XQ76U7OT70z+7GJb+7asWdo1bc0Gx17M Qlx2duQxdTtMThIwyWI63YyMnTZykWQ= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-441-yBUUM5_ROCaIIDFpCT9wAQ-1; Wed, 26 Jan 2022 10:22:19 -0500 X-MC-Unique: yBUUM5_ROCaIIDFpCT9wAQ-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id C30C519611C6; Wed, 26 Jan 2022 15:22:13 +0000 (UTC) Received: from virtlab701.virt.lab.eng.bos.redhat.com (virtlab701.virt.lab.eng.bos.redhat.com [10.19.152.228]) by smtp.corp.redhat.com (Postfix) with ESMTP id EDAC134D59; Wed, 26 Jan 2022 15:22:12 +0000 (UTC) From: Paolo Bonzini To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: yang.zhong@intel.com, seanjc@google.com Subject: [PATCH 3/3] selftests: kvm: check dynamic bits against KVM_X86_XCOMP_GUEST_SUPP Date: Wed, 26 Jan 2022 10:22:10 -0500 Message-Id: <20220126152210.3044876-4-pbonzini@redhat.com> In-Reply-To: <20220126152210.3044876-1-pbonzini@redhat.com> References: <20220126152210.3044876-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Provide coverage for the new API. Signed-off-by: Paolo Bonzini --- tools/arch/x86/include/uapi/asm/kvm.h | 3 +++ tools/include/uapi/linux/kvm.h | 1 + .../testing/selftests/kvm/lib/x86_64/processor.c | 15 +++++++++++++++ 3 files changed, 19 insertions(+) diff --git a/tools/arch/x86/include/uapi/asm/kvm.h b/tools/arch/x86/include/uapi/asm/kvm.h index 2da3316bb559..bf6e96011dfe 100644 --- a/tools/arch/x86/include/uapi/asm/kvm.h +++ b/tools/arch/x86/include/uapi/asm/kvm.h @@ -452,6 +452,9 @@ struct kvm_sync_regs { #define KVM_STATE_VMX_PREEMPTION_TIMER_DEADLINE 0x00000001 +/* attributes for system fd (group 0) */ +#define KVM_X86_XCOMP_GUEST_SUPP 0 + struct kvm_vmx_nested_state_data { __u8 vmcs12[KVM_STATE_NESTED_VMX_VMCS_SIZE]; __u8 shadow_vmcs12[KVM_STATE_NESTED_VMX_VMCS_SIZE]; diff --git a/tools/include/uapi/linux/kvm.h b/tools/include/uapi/linux/kvm.h index 9563d294f181..b46bcdb0cab1 100644 --- a/tools/include/uapi/linux/kvm.h +++ b/tools/include/uapi/linux/kvm.h @@ -1133,6 +1133,7 @@ struct kvm_ppc_resize_hpt { #define KVM_CAP_VM_MOVE_ENC_CONTEXT_FROM 206 #define KVM_CAP_VM_GPA_BITS 207 #define KVM_CAP_XSAVE2 208 +#define KVM_CAP_SYS_ATTRIBUTES 209 #ifdef KVM_CAP_IRQ_ROUTING diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index c1d1c195a838..9f000dfb5594 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -667,8 +667,23 @@ static bool is_xfd_supported(void) void vm_xsave_req_perm(int bit) { + int kvm_fd; u64 bitmask; long rc; + struct kvm_device_attr attr = { + .group = 0, + .attr = KVM_X86_XCOMP_GUEST_SUPP, + .addr = (unsigned long) &bitmask + }; + + kvm_fd = open_kvm_dev_path_or_exit(); + rc = ioctl(kvm_fd, KVM_GET_DEVICE_ATTR, &attr); + close(kvm_fd); + if (rc == -1 && (errno == ENXIO || errno == EINVAL)) + exit(KSFT_SKIP); + TEST_ASSERT(rc == 0, "KVM_GET_DEVICE_ATTR(0, KVM_X86_XCOMP_GUEST_SUPP) error: %ld", rc); + if (!(bitmask & (1ULL << bit))) + exit(KSFT_SKIP); if (!is_xfd_supported()) exit(KSFT_SKIP); -- 2.31.1