From patchwork Wed Nov 8 18:30:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Li, Xin3" X-Patchwork-Id: 743001 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 3117AC4167D for ; Wed, 8 Nov 2023 19:00:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233284AbjKHTAt (ORCPT ); Wed, 8 Nov 2023 14:00:49 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56830 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232582AbjKHTAb (ORCPT ); Wed, 8 Nov 2023 14:00:31 -0500 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2EA72213C; Wed, 8 Nov 2023 11:00:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1699470029; x=1731006029; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=f/CpZWB+KHZLSvqt26TggdKx4NNWrmqcMmgPoU9+LJM=; b=Ycn0Ro25JI8o5xAG9w+wR0NrFzDdkBzImNyZXz/bk4btqnPPUt1pvyVC kNGJKIb/weUCRa09u1HJGatN//Kt/gkmN/4FuMKJknIg0dhU4GuX38H/w S1VtDj1iCSBG2WMUvxsSFzWD3yuAW9e9dI0CfzJb4MbgX8tbRKkK0VLW8 qtehg2+cJJWCk+/5oRg8X/Ucczf53njUbRE0vxMuPjFvi3J+DWPfTewvI P8WX4Vm0E7CUd4St1KLyhv1QJhXXOjErRnyKRzk6Lcpsi0svJC+7n8LZV vpmjkEx5ysBC1AgBconP6rUSvoSkkdm7wrxM21yOj2cS2FjGcSud/CDfX Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10888"; a="8486456" X-IronPort-AV: E=Sophos;i="6.03,287,1694761200"; d="scan'208";a="8486456" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Nov 2023 11:00:28 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.03,287,1694761200"; d="scan'208";a="10892515" Received: from unknown (HELO fred..) ([172.25.112.68]) by orviesa001.jf.intel.com with ESMTP; 08 Nov 2023 11:00:27 -0800 From: Xin Li To: kvm@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-kselftest@vger.kernel.org Cc: seanjc@google.com, pbonzini@redhat.com, corbet@lwn.net, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, vkuznets@redhat.com, peterz@infradead.org, ravi.v.shankar@intel.com Subject: [PATCH v1 21/23] KVM: selftests: Run debug_regs test with FRED enabled Date: Wed, 8 Nov 2023 10:30:01 -0800 Message-ID: <20231108183003.5981-22-xin3.li@intel.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231108183003.5981-1-xin3.li@intel.com> References: <20231108183003.5981-1-xin3.li@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Run another round of debug_regs test with FRED enabled if FRED is available. Signed-off-by: Xin Li --- .../selftests/kvm/include/x86_64/processor.h | 4 ++ .../testing/selftests/kvm/x86_64/debug_regs.c | 50 ++++++++++++++----- 2 files changed, 41 insertions(+), 13 deletions(-) diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h index 25bc61dac5fb..165d21fd1577 100644 --- a/tools/testing/selftests/kvm/include/x86_64/processor.h +++ b/tools/testing/selftests/kvm/include/x86_64/processor.h @@ -47,6 +47,7 @@ extern bool host_cpu_is_amd; #define X86_CR4_SMEP (1ul << 20) #define X86_CR4_SMAP (1ul << 21) #define X86_CR4_PKE (1ul << 22) +#define X86_CR4_FRED (1ul << 32) struct xstate_header { u64 xstate_bv; @@ -163,6 +164,9 @@ struct kvm_x86_cpu_feature { #define X86_FEATURE_SPEC_CTRL KVM_X86_CPU_FEATURE(0x7, 0, EDX, 26) #define X86_FEATURE_ARCH_CAPABILITIES KVM_X86_CPU_FEATURE(0x7, 0, EDX, 29) #define X86_FEATURE_PKS KVM_X86_CPU_FEATURE(0x7, 0, ECX, 31) +#define X86_FEATURE_FRED KVM_X86_CPU_FEATURE(0x7, 1, EAX, 17) +#define X86_FEATURE_LKGS KVM_X86_CPU_FEATURE(0x7, 1, EAX, 18) +#define X86_FEATURE_WRMSRNS KVM_X86_CPU_FEATURE(0x7, 1, EAX, 19) #define X86_FEATURE_XTILECFG KVM_X86_CPU_FEATURE(0xD, 0, EAX, 17) #define X86_FEATURE_XTILEDATA KVM_X86_CPU_FEATURE(0xD, 0, EAX, 18) #define X86_FEATURE_XSAVES KVM_X86_CPU_FEATURE(0xD, 1, EAX, 3) diff --git a/tools/testing/selftests/kvm/x86_64/debug_regs.c b/tools/testing/selftests/kvm/x86_64/debug_regs.c index f6b295e0b2d2..69055e764f15 100644 --- a/tools/testing/selftests/kvm/x86_64/debug_regs.c +++ b/tools/testing/selftests/kvm/x86_64/debug_regs.c @@ -20,7 +20,7 @@ uint32_t guest_value; extern unsigned char sw_bp, hw_bp, write_data, ss_start, bd_start; -static void guest_code(void) +static void guest_test_code(void) { /* Create a pending interrupt on current vCPU */ x2apic_enable(); @@ -61,6 +61,15 @@ static void guest_code(void) /* DR6.BD test */ asm volatile("bd_start: mov %%dr0, %%rax" : : : "rax"); +} + +static void guest_code(void) +{ + guest_test_code(); + + if (get_cr4() & X86_CR4_FRED) + guest_test_code(); + GUEST_DONE(); } @@ -75,19 +84,15 @@ static void vcpu_skip_insn(struct kvm_vcpu *vcpu, int insn_len) vcpu_regs_set(vcpu, ®s); } -int main(void) +void run_test(struct kvm_vcpu *vcpu) { struct kvm_guest_debug debug; + struct kvm_run *run = vcpu->run; unsigned long long target_dr6, target_rip; - struct kvm_vcpu *vcpu; - struct kvm_run *run; - struct kvm_vm *vm; - struct ucall uc; - uint64_t cmd; int i; /* Instruction lengths starting at ss_start */ int ss_size[6] = { - 1, /* sti*/ + 1, /* sti */ 2, /* xor */ 2, /* cpuid */ 5, /* mov */ @@ -95,11 +100,6 @@ int main(void) 1, /* cli */ }; - TEST_REQUIRE(kvm_has_cap(KVM_CAP_SET_GUEST_DEBUG)); - - vm = vm_create_with_one_vcpu(&vcpu, guest_code); - run = vcpu->run; - /* Test software BPs - int3 */ memset(&debug, 0, sizeof(debug)); debug.control = KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP; @@ -202,6 +202,30 @@ int main(void) /* Disable all debug controls, run to the end */ memset(&debug, 0, sizeof(debug)); vcpu_guest_debug_set(vcpu, &debug); +} + +int main(void) +{ + struct kvm_vcpu *vcpu; + struct kvm_vm *vm; + struct ucall uc; + uint64_t cmd; + + TEST_REQUIRE(kvm_has_cap(KVM_CAP_SET_GUEST_DEBUG)); + + vm = vm_create_with_one_vcpu(&vcpu, guest_code); + + run_test(vcpu); + + if (kvm_cpu_has(X86_FEATURE_FRED)) { + struct kvm_sregs sregs; + + vcpu_sregs_get(vcpu, &sregs); + sregs.cr4 |= X86_CR4_FRED; + vcpu_sregs_set(vcpu, &sregs); + + run_test(vcpu); + } vcpu_run(vcpu); TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_IO);