From patchwork Fri May 7 02:42:46 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Xu, Dongxiao" X-Patchwork-Id: 97561 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o472hFIM006424 for ; Fri, 7 May 2010 02:43:15 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752517Ab0EGCnM (ORCPT ); Thu, 6 May 2010 22:43:12 -0400 Received: from mga11.intel.com ([192.55.52.93]:35637 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752380Ab0EGCnL convert rfc822-to-8bit (ORCPT ); Thu, 6 May 2010 22:43:11 -0400 Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga102.fm.intel.com with ESMTP; 06 May 2010 19:41:23 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.52,345,1270450800"; d="scan'208";a="796219908" Received: from pgsmsx601.gar.corp.intel.com ([10.221.43.69]) by fmsmga001.fm.intel.com with ESMTP; 06 May 2010 19:42:59 -0700 Received: from shsmsx602.ccr.corp.intel.com (10.239.4.104) by pgsmsx601.gar.corp.intel.com (10.221.43.69) with Microsoft SMTP Server (TLS) id 8.2.176.0; Fri, 7 May 2010 10:42:43 +0800 Received: from shsmsx501.ccr.corp.intel.com ([10.239.4.141]) by SHSMSX602.ccr.corp.intel.com ([10.239.4.104]) with mapi; Fri, 7 May 2010 10:42:42 +0800 From: "Xu, Dongxiao" To: "kvm@vger.kernel.org" CC: Avi Kivity , Marcelo Tosatti , Alexander Graf Date: Fri, 7 May 2010 10:42:46 +0800 Subject: [PATCH 1/4 v3] KVM: VMX: Define new functions to wrapper direct call of asm code. Thread-Topic: [PATCH 1/4 v3] KVM: VMX: Define new functions to wrapper direct call of asm code. Thread-Index: AcrtjvoMylnkYTbhTCqm4rNFoRq4cA== Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US MIME-Version: 1.0 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Fri, 07 May 2010 02:43:15 +0000 (UTC) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 875b785..e77da89 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -445,6 +445,19 @@ static void vmcs_clear(struct vmcs *vmcs) vmcs, phys_addr); } +static void vmcs_load(struct vmcs *vmcs) +{ + u64 phys_addr = __pa(vmcs); + u8 error; + + asm volatile (__ex(ASM_VMX_VMPTRLD_RAX) "; setna %0" + : "=g"(error) : "a"(&phys_addr), "m"(phys_addr) + : "cc", "memory"); + if (error) + printk(KERN_ERR "kvm: vmptrld %p/%llx fail\n", + vmcs, phys_addr); +} + static void __vcpu_clear(void *arg) { struct vcpu_vmx *vmx = arg; @@ -769,7 +782,6 @@ static void vmx_load_host_state(struct vcpu_vmx *vmx) static void vmx_vcpu_load(struct kvm_vcpu *vcpu, int cpu) { struct vcpu_vmx *vmx = to_vmx(vcpu); - u64 phys_addr = __pa(vmx->vmcs); u64 tsc_this, delta, new_offset; if (vcpu->cpu != cpu) { @@ -783,15 +795,8 @@ static void vmx_vcpu_load(struct kvm_vcpu *vcpu, int cpu) } if (per_cpu(current_vmcs, cpu) != vmx->vmcs) { - u8 error; - per_cpu(current_vmcs, cpu) = vmx->vmcs; - asm volatile (__ex(ASM_VMX_VMPTRLD_RAX) "; setna %0" - : "=g"(error) : "a"(&phys_addr), "m"(phys_addr) - : "cc"); - if (error) - printk(KERN_ERR "kvm: vmptrld %p/%llx fail\n", - vmx->vmcs, phys_addr); + vmcs_load(vmx->vmcs); } if (vcpu->cpu != cpu) { @@ -1220,6 +1225,13 @@ static __init int vmx_disabled_by_bios(void) /* locked but not enabled */ } +static void kvm_cpu_vmxon(u64 addr) +{ + asm volatile (ASM_VMX_VMXON_RAX + : : "a"(&addr), "m"(addr) + : "memory", "cc"); +} + static int hardware_enable(void *garbage) { int cpu = raw_smp_processor_id(); @@ -1240,9 +1252,7 @@ static int hardware_enable(void *garbage) FEATURE_CONTROL_LOCKED | FEATURE_CONTROL_VMXON_ENABLED); write_cr4(read_cr4() | X86_CR4_VMXE); /* FIXME: not cpu hotplug safe */ - asm volatile (ASM_VMX_VMXON_RAX - : : "a"(&phys_addr), "m"(phys_addr) - : "memory", "cc"); + kvm_cpu_vmxon(phys_addr); ept_sync_global(); @@ -1266,13 +1276,13 @@ static void vmclear_local_vcpus(void) static void kvm_cpu_vmxoff(void) { asm volatile (__ex(ASM_VMX_VMXOFF) : : : "cc"); - write_cr4(read_cr4() & ~X86_CR4_VMXE); } static void hardware_disable(void *garbage) { vmclear_local_vcpus(); kvm_cpu_vmxoff(); + write_cr4(read_cr4() & ~X86_CR4_VMXE); } static __init int adjust_vmx_controls(u32 ctl_min, u32 ctl_opt,