From patchwork Fri Jan 6 03:59:30 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Graf X-Patchwork-Id: 134595 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 0D58F1007D6 for ; Fri, 6 Jan 2012 14:44:36 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758576Ab2AFDoc (ORCPT ); Thu, 5 Jan 2012 22:44:32 -0500 Received: from cantor2.suse.de ([195.135.220.15]:46037 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758558Ab2AFDo0 (ORCPT ); Thu, 5 Jan 2012 22:44:26 -0500 Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.221.2]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx2.suse.de (Postfix) with ESMTP id 0939B8FE69; Fri, 6 Jan 2012 04:44:24 +0100 (CET) From: Alexander Graf To: kvm-ppc@vger.kernel.org Cc: kvm list , Avi Kivity , Marcelo Tosatti , Scott Wood Subject: [PATCH 2/3] KVM: PPC: Add support for explicit HIOR setting Date: Fri, 6 Jan 2012 04:59:30 +0100 Message-Id: <1325822371-11721-3-git-send-email-agraf@suse.de> X-Mailer: git-send-email 1.7.3.4 In-Reply-To: <1325822371-11721-1-git-send-email-agraf@suse.de> References: <1325822371-11721-1-git-send-email-agraf@suse.de> Sender: kvm-ppc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm-ppc@vger.kernel.org Until now, we always set HIOR based on the PVR, but this is just wrong. Instead, we should be setting HIOR explicitly, so user space can decide what the initial HIOR value is - just like on real hardware. We keep the old PVR based way around for backwards compatibility, but once user space uses the SET_ONE_REG based method, we drop the PVR logic. Signed-off-by: Alexander Graf --- v1 -> v2: - rename KVM_ONE_REG to KVM_REG - add size information to HIOR - change HIOR number to 1, indicating that numbers are consecutive --- Documentation/virtual/kvm/api.txt | 1 + arch/powerpc/include/asm/kvm.h | 2 ++ arch/powerpc/include/asm/kvm_book3s.h | 2 ++ arch/powerpc/kvm/book3s_pr.c | 6 ++++-- arch/powerpc/kvm/powerpc.c | 13 +++++++++++++ include/linux/kvm.h | 1 + 6 files changed, 23 insertions(+), 2 deletions(-) diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt index 8494214..d73b8ea 100644 --- a/Documentation/virtual/kvm/api.txt +++ b/Documentation/virtual/kvm/api.txt @@ -1546,6 +1546,7 @@ registers, find a list below: Arch | Register | Width (bits) | | + PPC | KVM_REG_PPC_HIOR | 64 4.66 KVM_GET_ONE_REG diff --git a/arch/powerpc/include/asm/kvm.h b/arch/powerpc/include/asm/kvm.h index 25964ee..7e9e24d 100644 --- a/arch/powerpc/include/asm/kvm.h +++ b/arch/powerpc/include/asm/kvm.h @@ -327,4 +327,6 @@ struct kvm_book3e_206_tlb_params { __u32 reserved[8]; }; +#define KVM_REG_PPC_HIOR KVM_REG_PPC | KVM_REG_SIZE_U64 | 0x1 + #endif /* __LINUX_KVM_POWERPC_H */ diff --git a/arch/powerpc/include/asm/kvm_book3s.h b/arch/powerpc/include/asm/kvm_book3s.h index 3c3edee..aa795cc 100644 --- a/arch/powerpc/include/asm/kvm_book3s.h +++ b/arch/powerpc/include/asm/kvm_book3s.h @@ -90,6 +90,8 @@ struct kvmppc_vcpu_book3s { #endif int context_id[SID_CONTEXTS]; + bool hior_explicit; /* HIOR is set by ioctl, not PVR */ + struct hlist_head hpte_hash_pte[HPTEG_HASH_NUM_PTE]; struct hlist_head hpte_hash_pte_long[HPTEG_HASH_NUM_PTE_LONG]; struct hlist_head hpte_hash_vpte[HPTEG_HASH_NUM_VPTE]; diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c index c193625..00efda6 100644 --- a/arch/powerpc/kvm/book3s_pr.c +++ b/arch/powerpc/kvm/book3s_pr.c @@ -157,14 +157,16 @@ void kvmppc_set_pvr(struct kvm_vcpu *vcpu, u32 pvr) #ifdef CONFIG_PPC_BOOK3S_64 if ((pvr >= 0x330000) && (pvr < 0x70330000)) { kvmppc_mmu_book3s_64_init(vcpu); - to_book3s(vcpu)->hior = 0xfff00000; + if (!to_book3s(vcpu)->hior_explicit) + to_book3s(vcpu)->hior = 0xfff00000; to_book3s(vcpu)->msr_mask = 0xffffffffffffffffULL; vcpu->arch.cpu_type = KVM_CPU_3S_64; } else #endif { kvmppc_mmu_book3s_32_init(vcpu); - to_book3s(vcpu)->hior = 0; + if (!to_book3s(vcpu)->hior_explicit) + to_book3s(vcpu)->hior = 0; to_book3s(vcpu)->msr_mask = 0xffffffffULL; vcpu->arch.cpu_type = KVM_CPU_3S_32; } diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 9c598b6..4223c6f 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -209,6 +209,7 @@ int kvm_dev_ioctl_check_extension(long ext) case KVM_CAP_PPC_BOOKE_SREGS: #else case KVM_CAP_PPC_SEGSTATE: + case KVM_CAP_PPC_HIOR: case KVM_CAP_PPC_PAPR: #endif case KVM_CAP_PPC_UNSET_IRQ: @@ -649,6 +650,11 @@ static int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, int r = -EINVAL; switch (reg->id) { +#ifdef CONFIG_PPC_BOOK3S + case KVM_REG_PPC_HIOR: + r = put_user(to_book3s(vcpu)->hior, (u64 __user *)reg->addr); + break; +#endif default: break; } @@ -662,6 +668,13 @@ static int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, int r = -EINVAL; switch (reg->id) { +#ifdef CONFIG_PPC_BOOK3S + case KVM_ONE_REG_PPC_HIOR: + r = get_user(to_book3s(vcpu)->hior, (u64 __user *)reg->addr); + if (!r) + to_book3s(vcpu)->hior_explicit = true; + break; +#endif default: break; } diff --git a/include/linux/kvm.h b/include/linux/kvm.h index 31fce98..125f1bc 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -555,6 +555,7 @@ struct kvm_ppc_pvinfo { #define KVM_CAP_PPC_SMT 64 #define KVM_CAP_PPC_RMA 65 #define KVM_CAP_MAX_VCPUS 66 /* returns max vcpus per vm */ +#define KVM_CAP_PPC_HIOR 67 #define KVM_CAP_PPC_PAPR 68 #define KVM_CAP_SW_TLB 69 #define KVM_CAP_ONE_REG 70