From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marc Zyngier Subject: [PATCH 29/31] KVM: arm64: vgic-v3: Add ICV_PMR_EL1 handler Date: Wed, 3 May 2017 11:46:04 +0100 Message-ID: <20170503104606.19342-30-marc.zyngier@arm.com> References: <20170503104606.19342-1-marc.zyngier@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org, David Daney , Catalin Marinas , Robert Richter , kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org To: Christoffer Dall Return-path: In-Reply-To: <20170503104606.19342-1-marc.zyngier@arm.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu List-Id: kvm.vger.kernel.org Add a handler for reading/writing the guest's view of the ICC_PMR_EL1 register, which is located in the ICH_VMCR_EL2.VPMR field. Signed-off-by: Marc Zyngier --- virt/kvm/arm/hyp/vgic-v3-sr.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/virt/kvm/arm/hyp/vgic-v3-sr.c b/virt/kvm/arm/hyp/vgic-v3-sr.c index 981201bf7a5e..4fbeeb54704e 100644 --- a/virt/kvm/arm/hyp/vgic-v3-sr.c +++ b/virt/kvm/arm/hyp/vgic-v3-sr.c @@ -848,6 +848,27 @@ static void __hyp_text __vgic_v3_read_hppir(struct kvm_vcpu *vcpu, vcpu_set_reg(vcpu, rt, lr_val & ICH_LR_VIRTUAL_ID_MASK); } +static void __hyp_text __vgic_v3_read_pmr(struct kvm_vcpu *vcpu, + u32 vmcr, int rt) +{ + vmcr &= ICH_VMCR_PMR_MASK; + vmcr >>= ICH_VMCR_PMR_SHIFT; + vcpu_set_reg(vcpu, rt, vmcr); +} + +static void __hyp_text __vgic_v3_write_pmr(struct kvm_vcpu *vcpu, + u32 vmcr, int rt) +{ + u32 val = vcpu_get_reg(vcpu, rt); + + val <<= ICH_VMCR_PMR_SHIFT; + val &= ICH_VMCR_PMR_MASK; + vmcr &= ~ICH_VMCR_PMR_MASK; + vmcr |= val; + + write_gicreg(vmcr, ICH_VMCR_EL2); +} + static void __hyp_text __vgic_v3_read_rpr(struct kvm_vcpu *vcpu, u32 vmcr, int rt) { @@ -991,6 +1012,12 @@ int __hyp_text __vgic_v3_perform_cpuif_access(struct kvm_vcpu *vcpu) else fn = __vgic_v3_write_ctlr; break; + case SYS_ICC_PMR_EL1: + if (is_read) + fn = __vgic_v3_read_pmr; + else + fn = __vgic_v3_write_pmr; + break; default: return 0; } -- 2.11.0