From nobody Sun Dec 29 01:22:37 2024 Delivered-To: importer2@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass header.i=@intel.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer2=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1721018156; cv=none; d=zohomail.com; s=zohoarc; b=dxCxqEro11ntOClMbb/gW4yrV7VaLHdV5uObrtA3f8nUprJWSpbqoUK4OjWOWBtlnfaAU8vcUFI2pASvONz33jVin4ut/wBUc3Um7AXHMt7SZRZEJWUIumWJgYCVLVnV5ZFytL1/GG+q2Grv/COCf8m1TDHF1tQaCN226SuLX6o= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1721018156; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=/j+bHgVx+lfLulIxzYAhkq5sXLp34wHYRFNXMMePigM=; b=m9ZV/+0Rufa4y2XKm8UuePlw5BqoT9P1MCN98SNVdwkP3mk20vgt/R+1i5HxqHuPrYVBDiBQKCcd1zP/htMWu31TkDnVPXEPERzFhA6GYL0n4AF89f9MEBTUJ/QAFdSZBQIyoy259Okd5ewtOlRQg1l/YpFtpig9BmZG+dwQG4A= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=@intel.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer2=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 17210181567951004.7844909351489; Sun, 14 Jul 2024 21:35:56 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sTDQ0-0008Rt-3J; Mon, 15 Jul 2024 00:34:32 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sTDPy-0008MY-L3 for qemu-devel@nongnu.org; Mon, 15 Jul 2024 00:34:30 -0400 Received: from mgamail.intel.com ([198.175.65.10]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sTDPx-0004FI-1J for qemu-devel@nongnu.org; Mon, 15 Jul 2024 00:34:30 -0400 Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jul 2024 21:34:28 -0700 Received: from liuzhao-optiplex-7080.sh.intel.com ([10.239.160.36]) by fmviesa004.fm.intel.com with ESMTP; 14 Jul 2024 21:34:25 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1721018070; x=1752554070; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=tKr89zQ0Ud3Nsxehy7urxxT9zgviuntFd5ByL5dN0Dg=; b=lUt2b5b1ICKpMrpB8P2FcdNt86YdQf1oWHnoP41BtilYfO4ILVBUuKY8 24rWQdBI0DGR+mI6bHwfod1tVK1jBsT2nhAbDsTiGpK9Mc+adZkJjEZ9X ICxOZrtkZ85F2Gbu74gdfS1A49F1MKAqkgMKnDWgIpOOlB/1n6hexx0ir 23Hv2sTn59fgXYxeYb3yNh83bEef8eqvFebb5/YMI0Z5ARxhGMKdGl380 x8qZ7AUPIPtBhqNEr1gj3Qg6VNQi4ZRs5depbEAJ24zB1uZdxoq3MB10q 7p1eJ2sfcdRjzR2XlxTsOB8c/MhGxWQ7oCOYveqe58/hwPS3jGFw3tt3t Q==; X-CSE-ConnectionGUID: r6JyMEQoQ1OHb6As3mRvZA== X-CSE-MsgGUID: UHo/i+WNSXmmGc4TqgBGTA== X-IronPort-AV: E=McAfee;i="6700,10204,11133"; a="35809829" X-IronPort-AV: E=Sophos;i="6.09,209,1716274800"; d="scan'208";a="35809829" X-CSE-ConnectionGUID: d46rdVzSQbq2gUIPsr/NmA== X-CSE-MsgGUID: Bdj/zOvLSmGvktFde+KVAQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,209,1716274800"; d="scan'208";a="54043070" From: Zhao Liu To: Paolo Bonzini , Richard Henderson , Eduardo Habkost , "Michael S . Tsirkin" , Marcel Apfelbaum , Marcelo Tosatti Cc: Xiaoyao Li , Pankaj Gupta , Zide Chen , qemu-devel@nongnu.org, kvm@vger.kernel.org, Zhao Liu Subject: [PATCH v3 3/8] target/i386/kvm: Only save/load kvmclock MSRs when kvmclock enabled Date: Mon, 15 Jul 2024 12:49:50 +0800 Message-Id: <20240715044955.3954304-4-zhao1.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240715044955.3954304-1-zhao1.liu@intel.com> References: <20240715044955.3954304-1-zhao1.liu@intel.com> MIME-Version: 1.0 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+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=198.175.65.10; envelope-from=zhao1.liu@intel.com; helo=mgamail.intel.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 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_MED=-2.3, 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer2=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer2=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @intel.com) X-ZM-MESSAGEID: 1721018159407116300 Content-Type: text/plain; charset="utf-8" MSR_KVM_SYSTEM_TIME and MSR_KVM_WALL_CLOCK are attached with the (old) kvmclock feature (KVM_FEATURE_CLOCKSOURCE). So, just save/load them only when kvmclock (KVM_FEATURE_CLOCKSOURCE) is enabled. Signed-off-by: Zhao Liu --- target/i386/kvm/kvm.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index 6ad5a7dbf1fd..ac434e83b64c 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -3419,8 +3419,10 @@ static int kvm_put_msrs(X86CPU *cpu, int level) */ if (level >=3D KVM_PUT_RESET_STATE) { kvm_msr_entry_add(cpu, MSR_IA32_TSC, env->tsc); - kvm_msr_entry_add(cpu, MSR_KVM_SYSTEM_TIME, env->system_time_msr); - kvm_msr_entry_add(cpu, MSR_KVM_WALL_CLOCK, env->wall_clock_msr); + if (env->features[FEAT_KVM] & CPUID_KVM_CLOCK) { + kvm_msr_entry_add(cpu, MSR_KVM_SYSTEM_TIME, env->system_time_m= sr); + kvm_msr_entry_add(cpu, MSR_KVM_WALL_CLOCK, env->wall_clock_msr= ); + } if (env->features[FEAT_KVM] & CPUID_KVM_ASYNCPF_INT) { kvm_msr_entry_add(cpu, MSR_KVM_ASYNC_PF_INT, env->async_pf_int= _msr); } @@ -3895,8 +3897,10 @@ static int kvm_get_msrs(X86CPU *cpu) } } #endif - kvm_msr_entry_add(cpu, MSR_KVM_SYSTEM_TIME, 0); - kvm_msr_entry_add(cpu, MSR_KVM_WALL_CLOCK, 0); + if (env->features[FEAT_KVM] & CPUID_KVM_CLOCK) { + kvm_msr_entry_add(cpu, MSR_KVM_SYSTEM_TIME, 0); + kvm_msr_entry_add(cpu, MSR_KVM_WALL_CLOCK, 0); + } if (env->features[FEAT_KVM] & CPUID_KVM_ASYNCPF_INT) { kvm_msr_entry_add(cpu, MSR_KVM_ASYNC_PF_INT, 0); } --=20 2.34.1