From nobody Sun Dec 29 01:12:05 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=1721145367; cv=none; d=zohomail.com; s=zohoarc; b=Kf1Egbkx4zYtGbETqJv2ve1HCHIjWmuDBrqt6tKhLYRUfs97DkPvwnbLiC+EloWWNgRf1ghIHOjfqbvQmDgSvv7kB2e7RHg3PPCAXK4GaSt20gypdHaUms/RT7JbRwJUuNCiIiEk6oRYJjKw3F2nkkxXkKrf9VYTRUAhmAVbxZ8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1721145367; 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=oAdVyKyK1cc0+y2CHYGHqFlgkriLnts+VQqCqaTIKQbnjSwBVoy5t0q2TodUFZr6idwTbByi12qcYnC47pTGasYU/yOcZ5ATLDr4esB8WlufxVJJx52Ppf8Dmpf5oWyHkPQmlLCAHU3s5N/psa73rXAgMgm3OUmxyIpDC+Ustck= 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 1721145367447539.0927704818544; Tue, 16 Jul 2024 08:56:07 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sTkWe-0000Au-7B; Tue, 16 Jul 2024 11:55:36 -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 1sTkWR-00006O-Uz for qemu-devel@nongnu.org; Tue, 16 Jul 2024 11:55:26 -0400 Received: from mgamail.intel.com ([192.198.163.15]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sTkWO-0007Rv-Rh for qemu-devel@nongnu.org; Tue, 16 Jul 2024 11:55:22 -0400 Received: from orviesa008.jf.intel.com ([10.64.159.148]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Jul 2024 08:54:55 -0700 Received: from liuzhao-optiplex-7080.sh.intel.com ([10.239.160.36]) by orviesa008.jf.intel.com with ESMTP; 16 Jul 2024 08:54:52 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1721145321; x=1752681321; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=tKr89zQ0Ud3Nsxehy7urxxT9zgviuntFd5ByL5dN0Dg=; b=EDwqMmzYz1IUo+Lr5LQLzgQ6MnmICnOK/4nQugAOS9WTrhk0OyDaH/so bVNsDmCEff01OgY5Q+9vmNjIokAwW0GGic4eW3IGlUxpKl4fN9zDoncR4 YQH1J30ZNO3FvtxP1Mhw1+3AUDk0/4A5hBP39c9TIC/kCnAQRpncWUrcZ 79lj98VPM6C5qOF2ZtuGrwgElmXO3prNX3hJMyPwwVS/kbC+3Exq8BRfg bV0PipXdfrikF2gPUI8JL3wSJPNZPFxp22tV9zRt2+3XAdTg5M/EdSrNp WN0sK1J3oYS3evjPZoQ4oADO7iHP1Gb45bHY9WJuyk624EEsGaSnWXf1f g==; X-CSE-ConnectionGUID: Ry8xn4d/R/GoTa98txx+dw== X-CSE-MsgGUID: rjOCn6VgTGKbj0L6NY7s2A== X-IronPort-AV: E=McAfee;i="6700,10204,11135"; a="18743708" X-IronPort-AV: E=Sophos;i="6.09,212,1716274800"; d="scan'208";a="18743708" X-CSE-ConnectionGUID: j3gcA0gTTA2+0HOhBi+S3A== X-CSE-MsgGUID: YP2sYcn8QyKJ8X4hGTs2/A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,212,1716274800"; d="scan'208";a="50788304" 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 v4 3/9] target/i386/kvm: Only save/load kvmclock MSRs when kvmclock enabled Date: Wed, 17 Jul 2024 00:10:09 +0800 Message-Id: <20240716161015.263031-4-zhao1.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240716161015.263031-1-zhao1.liu@intel.com> References: <20240716161015.263031-1-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=192.198.163.15; 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: 1721145369107116300 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