From patchwork Thu Jan 7 15:06:29 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vitaly Kuznetsov X-Patchwork-Id: 12004335 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=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 08B36C433DB for ; Thu, 7 Jan 2021 15:16:25 +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 88D05233FD for ; Thu, 7 Jan 2021 15:16:24 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 88D05233FD 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]:41870 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kxX1T-00018K-G7 for qemu-devel@archiver.kernel.org; Thu, 07 Jan 2021 10:16:23 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:37648) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kxWtQ-00087c-6h for qemu-devel@nongnu.org; Thu, 07 Jan 2021 10:08:04 -0500 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:49759) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kxWtN-00046j-RL for qemu-devel@nongnu.org; Thu, 07 Jan 2021 10:08:03 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1610032081; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=A/JKM7pKG9aRmqEKJ0ZykkNx3sB6VZbvuipCG+TDEH0=; b=FF5Gvs24ND7S1qAu0HR+EK+RjDAKr3Y3cRLIdu7OPvhXmJSQJAxzkV/+9sAM67xc4Vstky sVxK2m5wR05vS6XQi0n4vZyodfJV1VkIOEeOTPg24SSPEj/1R3EslV9ISeRZLCJjGTwB/2 A2OYAAPkgMFXdRLAdlcSE3R54yEQNAQ= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-336-GQKRMGiwNby7879ag6B7zA-1; Thu, 07 Jan 2021 10:07:59 -0500 X-MC-Unique: GQKRMGiwNby7879ag6B7zA-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 9AE778AADF5 for ; Thu, 7 Jan 2021 15:07:43 +0000 (UTC) Received: from vitty.brq.redhat.com (unknown [10.40.195.131]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1C862779D6; Thu, 7 Jan 2021 15:07:05 +0000 (UTC) From: Vitaly Kuznetsov To: qemu-devel@nongnu.org Subject: [PATCH v3 08/19] i386: introduce hv_cpuid_get_host() Date: Thu, 7 Jan 2021 16:06:29 +0100 Message-Id: <20210107150640.539239-9-vkuznets@redhat.com> In-Reply-To: <20210107150640.539239-1-vkuznets@redhat.com> References: <20210107150640.539239-1-vkuznets@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=vkuznets@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=63.128.21.124; envelope-from=vkuznets@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.246, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action 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: Paolo Bonzini , Marcelo Tosatti , Eduardo Habkost , Igor Mammedov Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" As a preparation to implementing hv_cpuid_cache intro introduce hv_cpuid_get_host(). No functional change intended. Signed-off-by: Vitaly Kuznetsov --- target/i386/kvm/kvm.c | 100 +++++++++++++++++++++++------------------- 1 file changed, 56 insertions(+), 44 deletions(-) diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index 5472d78f5d73..2a37bdc45d17 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -1110,6 +1110,19 @@ static int hv_cpuid_get_fw(struct kvm_cpuid2 *cpuid, int fw, uint32_t *r) return 0; } +static uint32_t hv_cpuid_get_host(struct kvm_cpuid2 *cpuid, uint32_t func, + int reg) +{ + struct kvm_cpuid_entry2 *entry; + + entry = cpuid_find_entry(cpuid, func, 0); + if (!entry) { + return 0; + } + + return cpuid_entry_get_reg(entry, reg); +} + static bool hyperv_feature_supported(struct kvm_cpuid2 *cpuid, int feature) { uint32_t r, fw, bits; @@ -1206,7 +1219,7 @@ static int hyperv_handle_properties(CPUState *cs, { X86CPU *cpu = X86_CPU(cs); struct kvm_cpuid2 *cpuid; - struct kvm_cpuid_entry2 *c, *c2; + struct kvm_cpuid_entry2 *c; uint32_t cpuid_i = 0; int r; @@ -1238,45 +1251,46 @@ static int hyperv_handle_properties(CPUState *cs, } if (cpu->hyperv_passthrough) { - c = cpuid_find_entry(cpuid, HV_CPUID_VENDOR_AND_MAX_FUNCTIONS, 0); - if (c) { - cpu->hyperv_vendor_id[0] = c->ebx; - cpu->hyperv_vendor_id[1] = c->ecx; - cpu->hyperv_vendor_id[2] = c->edx; - cpu->hyperv_vendor = g_realloc(cpu->hyperv_vendor, - sizeof(cpu->hyperv_vendor_id) + 1); - memcpy(cpu->hyperv_vendor, cpu->hyperv_vendor_id, - sizeof(cpu->hyperv_vendor_id)); - } - - c = cpuid_find_entry(cpuid, HV_CPUID_INTERFACE, 0); - if (c) { - cpu->hyperv_interface_id[0] = c->eax; - cpu->hyperv_interface_id[1] = c->ebx; - cpu->hyperv_interface_id[2] = c->ecx; - cpu->hyperv_interface_id[3] = c->edx; - } - - c = cpuid_find_entry(cpuid, HV_CPUID_VERSION, 0); - if (c) { - cpu->hyperv_version_id[0] = c->eax; - cpu->hyperv_version_id[1] = c->ebx; - cpu->hyperv_version_id[2] = c->ecx; - cpu->hyperv_version_id[3] = c->edx; - } - - c = cpuid_find_entry(cpuid, HV_CPUID_IMPLEMENT_LIMITS, 0); - if (c) { - cpu->hv_max_vps = c->eax; - cpu->hyperv_limits[0] = c->ebx; - cpu->hyperv_limits[1] = c->ecx; - cpu->hyperv_limits[2] = c->edx; - } - - c = cpuid_find_entry(cpuid, HV_CPUID_ENLIGHTMENT_INFO, 0); - if (c) { - cpu->hyperv_spinlock_attempts = c->ebx; - } + cpu->hyperv_vendor_id[0] = + hv_cpuid_get_host(cpuid, HV_CPUID_VENDOR_AND_MAX_FUNCTIONS, R_EBX); + cpu->hyperv_vendor_id[1] = + hv_cpuid_get_host(cpuid, HV_CPUID_VENDOR_AND_MAX_FUNCTIONS, R_ECX); + cpu->hyperv_vendor_id[2] = + hv_cpuid_get_host(cpuid, HV_CPUID_VENDOR_AND_MAX_FUNCTIONS, R_EDX); + cpu->hyperv_vendor = g_realloc(cpu->hyperv_vendor, + sizeof(cpu->hyperv_vendor_id) + 1); + memcpy(cpu->hyperv_vendor, cpu->hyperv_vendor_id, + sizeof(cpu->hyperv_vendor_id)); + + cpu->hyperv_interface_id[0] = + hv_cpuid_get_host(cpuid, HV_CPUID_INTERFACE, R_EAX); + cpu->hyperv_interface_id[1] = + hv_cpuid_get_host(cpuid, HV_CPUID_INTERFACE, R_EBX); + cpu->hyperv_interface_id[2] = + hv_cpuid_get_host(cpuid, HV_CPUID_INTERFACE, R_ECX); + cpu->hyperv_interface_id[3] = + hv_cpuid_get_host(cpuid, HV_CPUID_INTERFACE, R_EDX); + + cpu->hyperv_version_id[0] = + hv_cpuid_get_host(cpuid, HV_CPUID_VERSION, R_EAX); + cpu->hyperv_version_id[1] = + hv_cpuid_get_host(cpuid, HV_CPUID_VERSION, R_EBX); + cpu->hyperv_version_id[2] = + hv_cpuid_get_host(cpuid, HV_CPUID_VERSION, R_ECX); + cpu->hyperv_version_id[3] = + hv_cpuid_get_host(cpuid, HV_CPUID_VERSION, R_EDX); + + cpu->hv_max_vps = hv_cpuid_get_host(cpuid, HV_CPUID_IMPLEMENT_LIMITS, + R_EAX); + cpu->hyperv_limits[0] = + hv_cpuid_get_host(cpuid, HV_CPUID_IMPLEMENT_LIMITS, R_EBX); + cpu->hyperv_limits[1] = + hv_cpuid_get_host(cpuid, HV_CPUID_IMPLEMENT_LIMITS, R_ECX); + cpu->hyperv_limits[2] = + hv_cpuid_get_host(cpuid, HV_CPUID_IMPLEMENT_LIMITS, R_EDX); + + cpu->hyperv_spinlock_attempts = + hv_cpuid_get_host(cpuid, HV_CPUID_ENLIGHTMENT_INFO, R_EBX); } /* Features */ @@ -1350,10 +1364,8 @@ static int hyperv_handle_properties(CPUState *cs, if (cpu->hyperv_no_nonarch_cs == ON_OFF_AUTO_ON) { c->eax |= HV_NO_NONARCH_CORESHARING; } else if (cpu->hyperv_no_nonarch_cs == ON_OFF_AUTO_AUTO) { - c2 = cpuid_find_entry(cpuid, HV_CPUID_ENLIGHTMENT_INFO, 0); - if (c2) { - c->eax |= c2->eax & HV_NO_NONARCH_CORESHARING; - } + c->eax |= hv_cpuid_get_host(cpuid, HV_CPUID_ENLIGHTMENT_INFO, R_EAX) & + HV_NO_NONARCH_CORESHARING; } c = &cpuid_ent[cpuid_i++];