From patchwork Fri Jun 23 10:40:13 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Xu, Haibo1" X-Patchwork-Id: 13290349 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 02334C001DC for ; Fri, 23 Jun 2023 10:38:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232209AbjFWKiV (ORCPT ); Fri, 23 Jun 2023 06:38:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42992 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232331AbjFWKiO (ORCPT ); Fri, 23 Jun 2023 06:38:14 -0400 Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 967102697; Fri, 23 Jun 2023 03:37:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1687516666; x=1719052666; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=c7KoCv9Vo1qMt0K6xHBzZVraLcs3QK09dtvX+ljFZWQ=; b=T22SLwangIctOqT/DblciKNn1p4GpM8xLR1tRo0FJw+18TtP6VqbzmYk X6biFHESccRjcEliHEVE8rgYMRXVz3d4/iO+BTYtw22UpuV7BHCZMyj3Y 6tEfWd0/5+e6/wVWk1mlggEmE3SGG/0VG6waMCg94+AzDy7oYwnXQPJVu rWiN9MgvHTtf+G9I84u+mr21PimHpOMCgnmddGwYQhz8jPnmeg+tAosu+ TzxlXBZZCOorxZ6VvNDuPQwWpyaE7zRyi8K0aXEOV24mWwsYPcX4P/G/k li212YvlUvWjld7LXrTP4mYuwIrOouy7VSH7U0cS4OKRcYm99OPMXyAtW g==; X-IronPort-AV: E=McAfee;i="6600,9927,10749"; a="447112990" X-IronPort-AV: E=Sophos;i="6.01,151,1684825200"; d="scan'208";a="447112990" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Jun 2023 03:37:13 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10749"; a="715276262" X-IronPort-AV: E=Sophos;i="6.01,151,1684825200"; d="scan'208";a="715276262" Received: from haibo-optiplex-7090.sh.intel.com ([10.239.159.132]) by orsmga002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Jun 2023 03:37:06 -0700 From: Haibo Xu Cc: xiaobo55x@gmail.com, haibo1.xu@intel.com, ajones@ventanamicro.com, maz@kernel.org, oliver.upton@linux.dev, seanjc@google.com, Paolo Bonzini , Jonathan Corbet , Anup Patel , Atish Patra , Paul Walmsley , Palmer Dabbelt , Albert Ou , Shuah Khan , James Morse , Suzuki K Poulose , Zenghui Yu , David Matlack , Ben Gardon , Ricardo Koller , Vishal Annapurve , Vipin Sharma , Colton Lewis , kvm@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kselftest@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev Subject: [PATCH v4 11/12] KVM: riscv: selftests: Add finalize_vcpu check in run_test Date: Fri, 23 Jun 2023 18:40:13 +0800 Message-Id: X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Disable all vcpu extensions which were enabled by default if they were available in the risc-v host, and only enable the desired one for a vcpu_config. Suggested-by: Andrew Jones Signed-off-by: Haibo Xu Reviewed-by: Andrew Jones --- tools/testing/selftests/kvm/get-reg-list.c | 42 +++++++++++++++++++++- 1 file changed, 41 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/kvm/get-reg-list.c b/tools/testing/selftests/kvm/get-reg-list.c index 3beb6b62de0a..612dabc61137 100644 --- a/tools/testing/selftests/kvm/get-reg-list.c +++ b/tools/testing/selftests/kvm/get-reg-list.c @@ -138,11 +138,50 @@ static struct kvm_vcpu *vcpu_config_get_vcpu(struct vcpu_reg_list *c, struct kvm prepare_vcpu_init(c, &init); vcpu = __vm_vcpu_add(vm, 0); aarch64_vcpu_setup(vcpu, &init); - finalize_vcpu(vcpu, c); return vcpu; } #else +static inline bool vcpu_has_ext(struct kvm_vcpu *vcpu, int ext) +{ + int ret; + unsigned long value; + + ret = __vcpu_get_reg(vcpu, RISCV_ISA_EXT_REG(ext), &value); + if (ret) { + printf("Failed to get ext %d", ext); + return false; + } + + return !!value; +} + +static void finalize_vcpu(struct kvm_vcpu *vcpu, struct vcpu_reg_list *c) +{ + struct vcpu_reg_sublist *s; + + /* + * Disable all extensions which were enabled by default + * if they were available in the risc-v host. + */ + for (int i = 0; i < KVM_RISCV_ISA_EXT_MAX; i++) { + __vcpu_set_reg(vcpu, RISCV_ISA_EXT_REG(i), 0); + } + + for_each_sublist(c, s) { + if (!s->feature) + continue; + + /* Try to enable the desired extension */ + __vcpu_set_reg(vcpu, RISCV_ISA_EXT_REG(s->feature), 1); + + /* Double check whether the desired extension was enabled */ + __TEST_REQUIRE(vcpu_has_ext(vcpu, s->feature), + "%s: %s not available, skipping tests\n", + config_name(c), s->name); + } +} + static struct kvm_vcpu *vcpu_config_get_vcpu(struct vcpu_reg_list *c, struct kvm_vm *vm) { return __vm_vcpu_add(vm, 0); @@ -178,6 +217,7 @@ static void run_test(struct vcpu_reg_list *c) vm = vm_create_barebones(); vcpu = vcpu_config_get_vcpu(c, vm); + finalize_vcpu(vcpu, c); reg_list = vcpu_get_reg_list(vcpu);