From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from va3outboundpool.messaging.microsoft.com (va3ehsobe010.messaging.microsoft.com [216.32.180.30]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (Client CN "mail.global.frontbridge.com", Issuer "Microsoft Secure Server Authority" (not verified)) by ozlabs.org (Postfix) with ESMTPS id E5D0F2C03AC for ; Fri, 12 Oct 2012 03:14:26 +1100 (EST) Received: from mail216-va3 (localhost [127.0.0.1]) by mail216-va3-R.bigfish.com (Postfix) with ESMTP id D27168401AA for ; Thu, 11 Oct 2012 16:14:21 +0000 (UTC) Received: from VA3EHSMHS010.bigfish.com (unknown [10.7.14.237]) by mail216-va3.bigfish.com (Postfix) with ESMTP id 08EC618004E for ; Thu, 11 Oct 2012 16:14:19 +0000 (UTC) Received: from mcaraman-VirtualBox.ea.freescale.net ([10.213.130.145]) by az84smr01.freescale.net (8.14.3/8.14.0) with ESMTP id q9BGEB9P003743 for ; Thu, 11 Oct 2012 09:14:12 -0700 From: Mihai Caraman To: Subject: [PATCH 10/12] KVM: PPC: bookehv: Add EPCR support in mtspr/mfspr emulation Date: Thu, 11 Oct 2012 19:13:27 +0300 Message-ID: <1349972009-23027-11-git-send-email-mihai.caraman@freescale.com> In-Reply-To: <1349972009-23027-1-git-send-email-mihai.caraman@freescale.com> References: <1349972009-23027-1-git-send-email-mihai.caraman@freescale.com> MIME-Version: 1.0 Content-Type: text/plain Cc: Mihai Caraman , linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Add EPCR support in booke mtspr/mfspr emulation. EPCR register is defined only for 64-bit and HV categories, we will expose it at this point only to 64-bit virtual processors running on 64-bit HV hosts. Define a reusable setter function for vcpu's EPCR. Signed-off-by: Mihai Caraman --- v1: extended guard defines with CONFIG_KVM_BOOKE_HV required by arch's epcr and shadow_epcr fields. arch/powerpc/kvm/booke.c | 10 ++++++++++ arch/powerpc/kvm/booke.h | 1 + arch/powerpc/kvm/booke_emulate.c | 12 +++++++++++- 3 files changed, 22 insertions(+), 1 deletions(-) diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 86f0d0d..e6159f5 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -1473,6 +1473,16 @@ void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot) { } +void kvmppc_set_epcr(struct kvm_vcpu *vcpu, u32 new_epcr) +{ +#if defined(CONFIG_64BIT) && defined(CONFIG_KVM_BOOKE_HV) + vcpu->arch.epcr = new_epcr; + vcpu->arch.shadow_epcr &= ~SPRN_EPCR_GICM; + if (vcpu->arch.epcr & SPRN_EPCR_ICM) + vcpu->arch.shadow_epcr |= SPRN_EPCR_GICM; +#endif +} + void kvmppc_set_tcr(struct kvm_vcpu *vcpu, u32 new_tcr) { vcpu->arch.tcr = new_tcr; diff --git a/arch/powerpc/kvm/booke.h b/arch/powerpc/kvm/booke.h index ba61974..e9b88e4 100644 --- a/arch/powerpc/kvm/booke.h +++ b/arch/powerpc/kvm/booke.h @@ -69,6 +69,7 @@ extern unsigned long kvmppc_booke_handlers; void kvmppc_set_msr(struct kvm_vcpu *vcpu, u32 new_msr); void kvmppc_mmu_msr_notify(struct kvm_vcpu *vcpu, u32 old_msr); +void kvmppc_set_epcr(struct kvm_vcpu *vcpu, u32 new_epcr); void kvmppc_set_tcr(struct kvm_vcpu *vcpu, u32 new_tcr); void kvmppc_set_tsr_bits(struct kvm_vcpu *vcpu, u32 tsr_bits); void kvmppc_clr_tsr_bits(struct kvm_vcpu *vcpu, u32 tsr_bits); diff --git a/arch/powerpc/kvm/booke_emulate.c b/arch/powerpc/kvm/booke_emulate.c index 514790f..8d9d8f9 100644 --- a/arch/powerpc/kvm/booke_emulate.c +++ b/arch/powerpc/kvm/booke_emulate.c @@ -240,7 +240,12 @@ int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val) case SPRN_MCSR: vcpu->arch.mcsr &= ~spr_val; break; - +#if defined(CONFIG_64BIT) && defined(CONFIG_KVM_BOOKE_HV) + case SPRN_EPCR: + kvmppc_set_epcr(vcpu, spr_val); + mtspr(SPRN_EPCR, vcpu->arch.shadow_epcr); + break; +#endif default: emulated = EMULATE_FAIL; } @@ -335,6 +340,11 @@ int kvmppc_booke_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val) case SPRN_MCSR: *spr_val = vcpu->arch.mcsr; break; +#if defined(CONFIG_64BIT) && defined(CONFIG_KVM_BOOKE_HV) + case SPRN_EPCR: + *spr_val = vcpu->arch.epcr; + break; +#endif default: emulated = EMULATE_FAIL; -- 1.7.4.1