From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756921Ab2CWIIg (ORCPT ); Fri, 23 Mar 2012 04:08:36 -0400 Received: from e28smtp03.in.ibm.com ([122.248.162.3]:50951 "EHLO e28smtp03.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756587Ab2CWII3 (ORCPT ); Fri, 23 Mar 2012 04:08:29 -0400 From: Raghavendra K T To: Ingo Molnar , "H. Peter Anvin" Cc: X86 , Avi Kivity , Marcelo Tosatti , Jeremy Fitzhardinge , Konrad Rzeszutek Wilk , Greg Kroah-Hartman , Alexander Graf , Stefano Stabellini , Gleb Natapov , Randy Dunlap , linux-doc@vger.kernel.org, LKML , KVM , Virtualization , Xen , Sasha Levin , Srivatsa Vaddagiri Date: Fri, 23 Mar 2012 13:37:26 +0530 Message-Id: <20120323080723.14568.23068.sendpatchset@codeblue> In-Reply-To: <20120323080503.14568.43092.sendpatchset@codeblue> References: <20120323080503.14568.43092.sendpatchset@codeblue> Subject: [PATCH RFC V5 3/6] kvm : Add unhalt msr to aid (live) migration x-cbid: 12032308-3864-0000-0000-000001FB67AA Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Raghavendra K T Currently guest does not need to know pv_unhalt state and intended to be used via GET/SET_MSR ioctls during migration. Signed-off-by: Raghavendra K T --- diff --git a/arch/x86/include/asm/kvm_para.h b/arch/x86/include/asm/kvm_para.h index 9234f13..46f9751 100644 --- a/arch/x86/include/asm/kvm_para.h +++ b/arch/x86/include/asm/kvm_para.h @@ -40,6 +40,7 @@ #define MSR_KVM_SYSTEM_TIME_NEW 0x4b564d01 #define MSR_KVM_ASYNC_PF_EN 0x4b564d02 #define MSR_KVM_STEAL_TIME 0x4b564d03 +#define MSR_KVM_PV_UNHALT 0x4b564d04 struct kvm_steal_time { __u64 steal; diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index bd5ef91..38e6c47 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -784,12 +784,13 @@ EXPORT_SYMBOL_GPL(kvm_rdpmc); * kvm-specific. Those are put in the beginning of the list. */ -#define KVM_SAVE_MSRS_BEGIN 9 +#define KVM_SAVE_MSRS_BEGIN 10 static u32 msrs_to_save[] = { MSR_KVM_SYSTEM_TIME, MSR_KVM_WALL_CLOCK, MSR_KVM_SYSTEM_TIME_NEW, MSR_KVM_WALL_CLOCK_NEW, HV_X64_MSR_GUEST_OS_ID, HV_X64_MSR_HYPERCALL, HV_X64_MSR_APIC_ASSIST_PAGE, MSR_KVM_ASYNC_PF_EN, MSR_KVM_STEAL_TIME, + MSR_KVM_PV_UNHALT, MSR_IA32_SYSENTER_CS, MSR_IA32_SYSENTER_ESP, MSR_IA32_SYSENTER_EIP, MSR_STAR, #ifdef CONFIG_X86_64 @@ -1606,7 +1607,9 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data) kvm_make_request(KVM_REQ_STEAL_UPDATE, vcpu); break; - + case MSR_KVM_PV_UNHALT: + vcpu->pv_unhalted = (u32) data; + break; case MSR_IA32_MCG_CTL: case MSR_IA32_MCG_STATUS: case MSR_IA32_MC0_CTL ... MSR_IA32_MC0_CTL + 4 * KVM_MAX_MCE_BANKS - 1: @@ -1917,6 +1920,9 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata) case MSR_KVM_STEAL_TIME: data = vcpu->arch.st.msr_val; break; + case MSR_KVM_PV_UNHALT: + data = (u64)vcpu->pv_unhalted; + break; case MSR_IA32_P5_MC_ADDR: case MSR_IA32_P5_MC_TYPE: case MSR_IA32_MCG_CAP: From mboxrd@z Thu Jan 1 00:00:00 1970 From: Raghavendra K T Subject: [PATCH RFC V5 3/6] kvm : Add unhalt msr to aid (live) migration Date: Fri, 23 Mar 2012 13:37:26 +0530 Message-ID: <20120323080723.14568.23068.sendpatchset@codeblue> References: <20120323080503.14568.43092.sendpatchset@codeblue> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: Jeremy Fitzhardinge , X86 , KVM , Konrad Rzeszutek Wilk , LKML , Greg Kroah-Hartman , linux-doc@vger.kernel.org, Xen , Avi Kivity , Srivatsa Vaddagiri , Virtualization , Stefano Stabellini , Sasha Levin To: Ingo Molnar , "H. Peter Anvin" Return-path: In-Reply-To: <20120323080503.14568.43092.sendpatchset@codeblue> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.linux-foundation.org Errors-To: virtualization-bounces@lists.linux-foundation.org List-Id: kvm.vger.kernel.org From: Raghavendra K T Currently guest does not need to know pv_unhalt state and intended to be used via GET/SET_MSR ioctls during migration. Signed-off-by: Raghavendra K T --- diff --git a/arch/x86/include/asm/kvm_para.h b/arch/x86/include/asm/kvm_para.h index 9234f13..46f9751 100644 --- a/arch/x86/include/asm/kvm_para.h +++ b/arch/x86/include/asm/kvm_para.h @@ -40,6 +40,7 @@ #define MSR_KVM_SYSTEM_TIME_NEW 0x4b564d01 #define MSR_KVM_ASYNC_PF_EN 0x4b564d02 #define MSR_KVM_STEAL_TIME 0x4b564d03 +#define MSR_KVM_PV_UNHALT 0x4b564d04 struct kvm_steal_time { __u64 steal; diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index bd5ef91..38e6c47 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -784,12 +784,13 @@ EXPORT_SYMBOL_GPL(kvm_rdpmc); * kvm-specific. Those are put in the beginning of the list. */ -#define KVM_SAVE_MSRS_BEGIN 9 +#define KVM_SAVE_MSRS_BEGIN 10 static u32 msrs_to_save[] = { MSR_KVM_SYSTEM_TIME, MSR_KVM_WALL_CLOCK, MSR_KVM_SYSTEM_TIME_NEW, MSR_KVM_WALL_CLOCK_NEW, HV_X64_MSR_GUEST_OS_ID, HV_X64_MSR_HYPERCALL, HV_X64_MSR_APIC_ASSIST_PAGE, MSR_KVM_ASYNC_PF_EN, MSR_KVM_STEAL_TIME, + MSR_KVM_PV_UNHALT, MSR_IA32_SYSENTER_CS, MSR_IA32_SYSENTER_ESP, MSR_IA32_SYSENTER_EIP, MSR_STAR, #ifdef CONFIG_X86_64 @@ -1606,7 +1607,9 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data) kvm_make_request(KVM_REQ_STEAL_UPDATE, vcpu); break; - + case MSR_KVM_PV_UNHALT: + vcpu->pv_unhalted = (u32) data; + break; case MSR_IA32_MCG_CTL: case MSR_IA32_MCG_STATUS: case MSR_IA32_MC0_CTL ... MSR_IA32_MC0_CTL + 4 * KVM_MAX_MCE_BANKS - 1: @@ -1917,6 +1920,9 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata) case MSR_KVM_STEAL_TIME: data = vcpu->arch.st.msr_val; break; + case MSR_KVM_PV_UNHALT: + data = (u64)vcpu->pv_unhalted; + break; case MSR_IA32_P5_MC_ADDR: case MSR_IA32_P5_MC_TYPE: case MSR_IA32_MCG_CAP: