From nobody Mon Nov 17 01:29:07 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1602246931; cv=none; d=zohomail.com; s=zohoarc; b=WRPe/dWBRhV5wep5BXFXN6mIAvcOVmvJLzQcajazIxNYgDLzSEqezCzX4ExcCMc2NcY2LTQCWz8J9qmzBTaicf8kO7gpTJ9Cjj7enyBw3vWmmOt7GAa/p/pjSnHXD4JfjLLy80PIlX8C6qt7fcKo39qUGVQONgV+IWFWS7MSSt8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1602246931; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=T04itX31MVoGGAzfcbIzJMkkgUVsVfumPou/7abL0vw=; b=HNO7eFbYZrr9f39J1k/9EpTkS2C9osVAnULBmpkMWc3cabENd0FiS5p3loYCgRDBwIWhdOqEwXxuJqjRbq/WiNxi0v4RERC+QC7302F1Gb3V+TvsO6IA+Mrx2cQkNrtE4Y92wFVA/U/jvKy0Bla99b5J9qfLdGKXoU8Ehayj/gs= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1602246931864182.88259540786748; Fri, 9 Oct 2020 05:35:31 -0700 (PDT) Received: from localhost ([::1]:48072 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kQrcQ-00079B-I1 for importer@patchew.org; Fri, 09 Oct 2020 08:35:30 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:38484) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kQrMl-0008La-Cl for qemu-devel@nongnu.org; Fri, 09 Oct 2020 08:19:19 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:32835) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kQrMc-0007wk-0l for qemu-devel@nongnu.org; Fri, 09 Oct 2020 08:19:15 -0400 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-71-gJtZ_KPXNDW0gL9-MAszUQ-1; Fri, 09 Oct 2020 08:19:05 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 6B159196C909 for ; Fri, 9 Oct 2020 12:19:04 +0000 (UTC) Received: from vitty.brq.redhat.com (unknown [10.40.195.207]) by smtp.corp.redhat.com (Postfix) with ESMTP id C73475C1BB; Fri, 9 Oct 2020 12:19:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1602245947; 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=T04itX31MVoGGAzfcbIzJMkkgUVsVfumPou/7abL0vw=; b=Zm25MfY8112+LzZYJ/F6WGnKWICVJ0ZaSLCCOw/6fSiE/f5cclvdm68aNxIw6DxEuVbABh yS3WEJghj1LVfqEKm/gSOkF5/A40OkxAfcgxo3yRbShLIzHTJmmKNbUwt+BgKr5bAUjiyu E8PrxtVV85zaSiN7IoXP0c6dXp/bPwM= X-MC-Unique: gJtZ_KPXNDW0gL9-MAszUQ-1 From: Vitaly Kuznetsov To: qemu-devel@nongnu.org Subject: [PATCH RFC v3 09/23] i386: invert hyperv_spinlock_attempts setting logic with hv_passthrough Date: Fri, 9 Oct 2020 14:18:28 +0200 Message-Id: <20201009121842.1938010-10-vkuznets@redhat.com> In-Reply-To: <20201009121842.1938010-1-vkuznets@redhat.com> References: <20201009121842.1938010-1-vkuznets@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 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 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=216.205.24.124; envelope-from=vkuznets@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/09 02:34:37 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, 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 , "Dr. David Alan Gilbert" Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" There is no need to have this special case: like all other Hyper-V enlightenments we can just use kernel's supplied value in hv_passthrough mode. Signed-off-by: Vitaly Kuznetsov --- target/i386/kvm.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/target/i386/kvm.c b/target/i386/kvm.c index 67e650d1e810..5350cd867759 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -1254,11 +1254,7 @@ static int hyperv_handle_properties(CPUState *cs, c =3D cpuid_find_entry(cpuid, HV_CPUID_ENLIGHTMENT_INFO, 0); if (c) { env->features[FEAT_HV_RECOMM_EAX] =3D c->eax; - - /* hv-spinlocks may have been overriden */ - if (cpu->hyperv_spinlock_attempts !=3D HYPERV_SPINLOCK_NEVER_N= OTIFY) { - c->ebx =3D cpu->hyperv_spinlock_attempts; - } + cpu->hyperv_spinlock_attempts =3D c->ebx; } c =3D cpuid_find_entry(cpuid, HV_CPUID_NESTED_FEATURES, 0); if (c) { --=20 2.25.4