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 X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EBC91C3A589 for ; Tue, 20 Aug 2019 07:12:25 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C0A93214DA for ; Tue, 20 Aug 2019 07:12:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C0A93214DA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:33864 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1hzyJc-0001Kf-LJ for qemu-devel@archiver.kernel.org; Tue, 20 Aug 2019 03:12:24 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42532) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1hzy8H-0005VP-Ey for qemu-devel@nongnu.org; Tue, 20 Aug 2019 03:00:42 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hzy8F-00038B-W3 for qemu-devel@nongnu.org; Tue, 20 Aug 2019 03:00:41 -0400 Received: from mx1.redhat.com ([209.132.183.28]:35988) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hzy8F-00037H-OM for qemu-devel@nongnu.org; Tue, 20 Aug 2019 03:00:39 -0400 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id ED02830615C6; Tue, 20 Aug 2019 07:00:38 +0000 (UTC) Received: from 640k.localdomain.com (ovpn-112-20.ams2.redhat.com [10.36.112.20]) by smtp.corp.redhat.com (Postfix) with ESMTP id E952F11E53F; Tue, 20 Aug 2019 07:00:37 +0000 (UTC) From: Paolo Bonzini To: qemu-devel@nongnu.org Date: Tue, 20 Aug 2019 08:59:29 +0200 Message-Id: <1566284395-30287-11-git-send-email-pbonzini@redhat.com> In-Reply-To: <1566284395-30287-1-git-send-email-pbonzini@redhat.com> References: <1566284395-30287-1-git-send-email-pbonzini@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.42]); Tue, 20 Aug 2019 07:00:39 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 10/36] target-i386: kvm: 'kvm_get_supported_msrs' cleanup X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Li Qiang Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Li Qiang Function 'kvm_get_supported_msrs' is only called once now, get rid of the static variable 'kvm_supported_msrs'. Signed-off-by: Li Qiang Message-Id: <20190725151639.21693-1-liq3ea@163.com> Signed-off-by: Paolo Bonzini --- target/i386/kvm.c | 185 +++++++++++++++++++++++++++--------------------------- 1 file changed, 91 insertions(+), 94 deletions(-) diff --git a/target/i386/kvm.c b/target/i386/kvm.c index 327c95a..a66b956 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -1839,108 +1839,105 @@ static int kvm_get_supported_feature_msrs(KVMState *s) static int kvm_get_supported_msrs(KVMState *s) { - static int kvm_supported_msrs; int ret = 0; + struct kvm_msr_list msr_list, *kvm_msr_list; - /* first time */ - if (kvm_supported_msrs == 0) { - struct kvm_msr_list msr_list, *kvm_msr_list; + /* + * Obtain MSR list from KVM. These are the MSRs that we must + * save/restore. + */ + msr_list.nmsrs = 0; + ret = kvm_ioctl(s, KVM_GET_MSR_INDEX_LIST, &msr_list); + if (ret < 0 && ret != -E2BIG) { + return ret; + } + /* + * Old kernel modules had a bug and could write beyond the provided + * memory. Allocate at least a safe amount of 1K. + */ + kvm_msr_list = g_malloc0(MAX(1024, sizeof(msr_list) + + msr_list.nmsrs * + sizeof(msr_list.indices[0]))); - kvm_supported_msrs = -1; + kvm_msr_list->nmsrs = msr_list.nmsrs; + ret = kvm_ioctl(s, KVM_GET_MSR_INDEX_LIST, kvm_msr_list); + if (ret >= 0) { + int i; - /* Obtain MSR list from KVM. These are the MSRs that we must - * save/restore */ - msr_list.nmsrs = 0; - ret = kvm_ioctl(s, KVM_GET_MSR_INDEX_LIST, &msr_list); - if (ret < 0 && ret != -E2BIG) { - return ret; - } - /* Old kernel modules had a bug and could write beyond the provided - memory. Allocate at least a safe amount of 1K. */ - kvm_msr_list = g_malloc0(MAX(1024, sizeof(msr_list) + - msr_list.nmsrs * - sizeof(msr_list.indices[0]))); - - kvm_msr_list->nmsrs = msr_list.nmsrs; - ret = kvm_ioctl(s, KVM_GET_MSR_INDEX_LIST, kvm_msr_list); - if (ret >= 0) { - int i; - - for (i = 0; i < kvm_msr_list->nmsrs; i++) { - switch (kvm_msr_list->indices[i]) { - case MSR_STAR: - has_msr_star = true; - break; - case MSR_VM_HSAVE_PA: - has_msr_hsave_pa = true; - break; - case MSR_TSC_AUX: - has_msr_tsc_aux = true; - break; - case MSR_TSC_ADJUST: - has_msr_tsc_adjust = true; - break; - case MSR_IA32_TSCDEADLINE: - has_msr_tsc_deadline = true; - break; - case MSR_IA32_SMBASE: - has_msr_smbase = true; - break; - case MSR_SMI_COUNT: - has_msr_smi_count = true; - break; - case MSR_IA32_MISC_ENABLE: - has_msr_misc_enable = true; - break; - case MSR_IA32_BNDCFGS: - has_msr_bndcfgs = true; - break; - case MSR_IA32_XSS: - has_msr_xss = true; - break; - case HV_X64_MSR_CRASH_CTL: - has_msr_hv_crash = true; - break; - case HV_X64_MSR_RESET: - has_msr_hv_reset = true; - break; - case HV_X64_MSR_VP_INDEX: - has_msr_hv_vpindex = true; - break; - case HV_X64_MSR_VP_RUNTIME: - has_msr_hv_runtime = true; - break; - case HV_X64_MSR_SCONTROL: - has_msr_hv_synic = true; - break; - case HV_X64_MSR_STIMER0_CONFIG: - has_msr_hv_stimer = true; - break; - case HV_X64_MSR_TSC_FREQUENCY: - has_msr_hv_frequencies = true; - break; - case HV_X64_MSR_REENLIGHTENMENT_CONTROL: - has_msr_hv_reenlightenment = true; - break; - case MSR_IA32_SPEC_CTRL: - has_msr_spec_ctrl = true; - break; - case MSR_VIRT_SSBD: - has_msr_virt_ssbd = true; - break; - case MSR_IA32_ARCH_CAPABILITIES: - has_msr_arch_capabs = true; - break; - case MSR_IA32_CORE_CAPABILITY: - has_msr_core_capabs = true; - break; - } + for (i = 0; i < kvm_msr_list->nmsrs; i++) { + switch (kvm_msr_list->indices[i]) { + case MSR_STAR: + has_msr_star = true; + break; + case MSR_VM_HSAVE_PA: + has_msr_hsave_pa = true; + break; + case MSR_TSC_AUX: + has_msr_tsc_aux = true; + break; + case MSR_TSC_ADJUST: + has_msr_tsc_adjust = true; + break; + case MSR_IA32_TSCDEADLINE: + has_msr_tsc_deadline = true; + break; + case MSR_IA32_SMBASE: + has_msr_smbase = true; + break; + case MSR_SMI_COUNT: + has_msr_smi_count = true; + break; + case MSR_IA32_MISC_ENABLE: + has_msr_misc_enable = true; + break; + case MSR_IA32_BNDCFGS: + has_msr_bndcfgs = true; + break; + case MSR_IA32_XSS: + has_msr_xss = true; + break; + case HV_X64_MSR_CRASH_CTL: + has_msr_hv_crash = true; + break; + case HV_X64_MSR_RESET: + has_msr_hv_reset = true; + break; + case HV_X64_MSR_VP_INDEX: + has_msr_hv_vpindex = true; + break; + case HV_X64_MSR_VP_RUNTIME: + has_msr_hv_runtime = true; + break; + case HV_X64_MSR_SCONTROL: + has_msr_hv_synic = true; + break; + case HV_X64_MSR_STIMER0_CONFIG: + has_msr_hv_stimer = true; + break; + case HV_X64_MSR_TSC_FREQUENCY: + has_msr_hv_frequencies = true; + break; + case HV_X64_MSR_REENLIGHTENMENT_CONTROL: + has_msr_hv_reenlightenment = true; + break; + case MSR_IA32_SPEC_CTRL: + has_msr_spec_ctrl = true; + break; + case MSR_VIRT_SSBD: + has_msr_virt_ssbd = true; + break; + case MSR_IA32_ARCH_CAPABILITIES: + has_msr_arch_capabs = true; + break; + case MSR_IA32_CORE_CAPABILITY: + has_msr_core_capabs = true; + break; } } - - g_free(kvm_msr_list); } + g_free(kvm_msr_list); + return ret; } -- 1.8.3.1