From: Marc Zyngier <marc.zyngier@arm.com> To: "Radim Krčmář" <rkrcmar@redhat.com>, "Paolo Bonzini" <pbonzini@redhat.com> Cc: Christoffer Dall <cdall@linaro.org>, Stefan Traby <stefan@hello-penguin.com>, kvm@vger.kernel.org, David Daney <david.daney@cavium.com>, Catalin Marinas <catalin.marinas@arm.com>, Hu Huajun <huhuajun@huawei.com>, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org Subject: [PATCH 31/58] KVM: arm64: vgic-v3: Add ICV_BPR1_EL1 handler Date: Fri, 30 Jun 2017 09:44:47 +0100 [thread overview] Message-ID: <20170630084514.6779-32-marc.zyngier@arm.com> (raw) In-Reply-To: <20170630084514.6779-1-marc.zyngier@arm.com> Add a handler for reading/writing the guest's view of the ICC_BPR1_EL1 register, which is located in the ICH_VMCR_EL2.BPR1 field. Tested-by: Alexander Graf <agraf@suse.de> Acked-by: David Daney <david.daney@cavium.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Reviewed-by: Christoffer Dall <cdall@linaro.org> Signed-off-by: Christoffer Dall <cdall@linaro.org> --- virt/kvm/arm/hyp/vgic-v3-sr.c | 57 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) diff --git a/virt/kvm/arm/hyp/vgic-v3-sr.c b/virt/kvm/arm/hyp/vgic-v3-sr.c index e6c05b95a1b1..fe021abc8b51 100644 --- a/virt/kvm/arm/hyp/vgic-v3-sr.c +++ b/virt/kvm/arm/hyp/vgic-v3-sr.c @@ -375,6 +375,57 @@ void __hyp_text __vgic_v3_write_vmcr(u32 vmcr) #ifdef CONFIG_ARM64 +static int __hyp_text __vgic_v3_bpr_min(void) +{ + /* See Pseudocode for VPriorityGroup */ + return 8 - vtr_to_nr_pre_bits(read_gicreg(ICH_VTR_EL2)); +} + +static unsigned int __hyp_text __vgic_v3_get_bpr0(u32 vmcr) +{ + return (vmcr & ICH_VMCR_BPR0_MASK) >> ICH_VMCR_BPR0_SHIFT; +} + +static unsigned int __hyp_text __vgic_v3_get_bpr1(u32 vmcr) +{ + unsigned int bpr; + + if (vmcr & ICH_VMCR_CBPR_MASK) { + bpr = __vgic_v3_get_bpr0(vmcr); + if (bpr < 7) + bpr++; + } else { + bpr = (vmcr & ICH_VMCR_BPR1_MASK) >> ICH_VMCR_BPR1_SHIFT; + } + + return bpr; +} + +static void __hyp_text __vgic_v3_read_bpr1(struct kvm_vcpu *vcpu, u32 vmcr, int rt) +{ + vcpu_set_reg(vcpu, rt, __vgic_v3_get_bpr1(vmcr)); +} + +static void __hyp_text __vgic_v3_write_bpr1(struct kvm_vcpu *vcpu, u32 vmcr, int rt) +{ + u64 val = vcpu_get_reg(vcpu, rt); + u8 bpr_min = __vgic_v3_bpr_min(); + + if (vmcr & ICH_VMCR_CBPR_MASK) + return; + + /* Enforce BPR limiting */ + if (val < bpr_min) + val = bpr_min; + + val <<= ICH_VMCR_BPR1_SHIFT; + val &= ICH_VMCR_BPR1_MASK; + vmcr &= ~ICH_VMCR_BPR1_MASK; + vmcr |= val; + + __vgic_v3_write_vmcr(vmcr); +} + int __hyp_text __vgic_v3_perform_cpuif_access(struct kvm_vcpu *vcpu) { int rt; @@ -397,6 +448,12 @@ int __hyp_text __vgic_v3_perform_cpuif_access(struct kvm_vcpu *vcpu) is_read = (esr & ESR_ELx_SYS64_ISS_DIR_MASK) == ESR_ELx_SYS64_ISS_DIR_READ; switch (sysreg) { + case SYS_ICC_BPR1_EL1: + if (is_read) + fn = __vgic_v3_read_bpr1; + else + fn = __vgic_v3_write_bpr1; + break; default: return 0; } -- 2.11.0
WARNING: multiple messages have this Message-ID (diff)
From: marc.zyngier@arm.com (Marc Zyngier) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 31/58] KVM: arm64: vgic-v3: Add ICV_BPR1_EL1 handler Date: Fri, 30 Jun 2017 09:44:47 +0100 [thread overview] Message-ID: <20170630084514.6779-32-marc.zyngier@arm.com> (raw) In-Reply-To: <20170630084514.6779-1-marc.zyngier@arm.com> Add a handler for reading/writing the guest's view of the ICC_BPR1_EL1 register, which is located in the ICH_VMCR_EL2.BPR1 field. Tested-by: Alexander Graf <agraf@suse.de> Acked-by: David Daney <david.daney@cavium.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Reviewed-by: Christoffer Dall <cdall@linaro.org> Signed-off-by: Christoffer Dall <cdall@linaro.org> --- virt/kvm/arm/hyp/vgic-v3-sr.c | 57 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) diff --git a/virt/kvm/arm/hyp/vgic-v3-sr.c b/virt/kvm/arm/hyp/vgic-v3-sr.c index e6c05b95a1b1..fe021abc8b51 100644 --- a/virt/kvm/arm/hyp/vgic-v3-sr.c +++ b/virt/kvm/arm/hyp/vgic-v3-sr.c @@ -375,6 +375,57 @@ void __hyp_text __vgic_v3_write_vmcr(u32 vmcr) #ifdef CONFIG_ARM64 +static int __hyp_text __vgic_v3_bpr_min(void) +{ + /* See Pseudocode for VPriorityGroup */ + return 8 - vtr_to_nr_pre_bits(read_gicreg(ICH_VTR_EL2)); +} + +static unsigned int __hyp_text __vgic_v3_get_bpr0(u32 vmcr) +{ + return (vmcr & ICH_VMCR_BPR0_MASK) >> ICH_VMCR_BPR0_SHIFT; +} + +static unsigned int __hyp_text __vgic_v3_get_bpr1(u32 vmcr) +{ + unsigned int bpr; + + if (vmcr & ICH_VMCR_CBPR_MASK) { + bpr = __vgic_v3_get_bpr0(vmcr); + if (bpr < 7) + bpr++; + } else { + bpr = (vmcr & ICH_VMCR_BPR1_MASK) >> ICH_VMCR_BPR1_SHIFT; + } + + return bpr; +} + +static void __hyp_text __vgic_v3_read_bpr1(struct kvm_vcpu *vcpu, u32 vmcr, int rt) +{ + vcpu_set_reg(vcpu, rt, __vgic_v3_get_bpr1(vmcr)); +} + +static void __hyp_text __vgic_v3_write_bpr1(struct kvm_vcpu *vcpu, u32 vmcr, int rt) +{ + u64 val = vcpu_get_reg(vcpu, rt); + u8 bpr_min = __vgic_v3_bpr_min(); + + if (vmcr & ICH_VMCR_CBPR_MASK) + return; + + /* Enforce BPR limiting */ + if (val < bpr_min) + val = bpr_min; + + val <<= ICH_VMCR_BPR1_SHIFT; + val &= ICH_VMCR_BPR1_MASK; + vmcr &= ~ICH_VMCR_BPR1_MASK; + vmcr |= val; + + __vgic_v3_write_vmcr(vmcr); +} + int __hyp_text __vgic_v3_perform_cpuif_access(struct kvm_vcpu *vcpu) { int rt; @@ -397,6 +448,12 @@ int __hyp_text __vgic_v3_perform_cpuif_access(struct kvm_vcpu *vcpu) is_read = (esr & ESR_ELx_SYS64_ISS_DIR_MASK) == ESR_ELx_SYS64_ISS_DIR_READ; switch (sysreg) { + case SYS_ICC_BPR1_EL1: + if (is_read) + fn = __vgic_v3_read_bpr1; + else + fn = __vgic_v3_write_bpr1; + break; default: return 0; } -- 2.11.0
next prev parent reply other threads:[~2017-06-30 8:44 UTC|newest] Thread overview: 120+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-06-30 8:44 [GIT PULL] KVM/ARM updates for 4.13 Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 01/58] KVM: arm: Restore banked registers and physical timer access on hyp_panic() Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 02/58] KVM: arm64: Restore host " Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 03/58] KVM: arm/arm64: Allow GICv2 to supply a uaccess register function Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 04/58] KVM: arm/arm64: Separate guest and uaccess writes to dist {sc}active Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 05/58] KVM: arm/arm64: Simplify active_change_prepare and plug race Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 06/58] KVM: arm/arm64: Use uaccess functions for GICv3 {sc}active Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 07/58] KVM: improve arch vcpu request defining Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 08/58] KVM: add kvm_request_pending Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 09/58] KVM: Add documentation for VCPU requests Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 10/58] KVM: arm/arm64: properly use vcpu requests Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 11/58] KVM: arm/arm64: replace pause checks with vcpu request checks Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 12/58] KVM: arm/arm64: use vcpu requests for power_off Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 13/58] KVM: arm/arm64: optimize VCPU RUN Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 14/58] KVM: arm/arm64: change exit request to sleep request Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 15/58] KVM: arm/arm64: use vcpu requests for irq injection Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 16/58] KVM: arm/arm64: PMU: remove request-less vcpu kick Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 17/58] KVM: arm/arm64: timer: " Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 18/58] KVM: arm64: Allow creating the PMU without the in-kernel GIC Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 19/58] KVM: arm: Handle VCPU device attributes in guest.c Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 20/58] KVM: arm/arm64: Move irq_is_ppi() to header file Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 21/58] KVM: arm/arm64: Move timer IRQ default init to arch_timer.c Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 22/58] KVM: arm/arm64: Allow setting the timer IRQ numbers from userspace Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 23/58] KVM: arm/arm64: Introduce an allocator for in-kernel irq lines Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 24/58] KVM: arm/arm64: Check if irq lines to the GIC are already used Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 25/58] KVM: arm/arm64: Disallow userspace control of in-kernel IRQ lines Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 26/58] KVM: arm/arm64: Don't assume initialized vgic when setting PMU IRQ Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 27/58] arm64: Add a facility to turn an ESR syndrome into a sysreg encoding Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 28/58] KVM: arm/arm64: vgic-v3: Add accessors for the ICH_APxRn_EL2 registers Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 29/58] KVM: arm64: Make kvm_condition_valid32() accessible from EL2 Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 30/58] KVM: arm64: vgic-v3: Add hook to handle guest GICv3 sysreg accesses at EL2 Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier [this message] 2017-06-30 8:44 ` [PATCH 31/58] KVM: arm64: vgic-v3: Add ICV_BPR1_EL1 handler Marc Zyngier 2017-06-30 8:44 ` [PATCH 32/58] KVM: arm64: vgic-v3: Add ICV_IGRPEN1_EL1 handler Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 33/58] KVM: arm64: vgic-v3: Add ICV_IAR1_EL1 handler Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 34/58] KVM: arm64: vgic-v3: Add ICV_EOIR1_EL1 handler Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 35/58] KVM: arm64: vgic-v3: Add ICV_AP1Rn_EL1 handler Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 36/58] KVM: arm64: vgic-v3: Add ICV_HPPIR1_EL1 handler Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 37/58] KVM: arm64: vgic-v3: Enable trapping of Group-1 system registers Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 38/58] KVM: arm64: Enable GICv3 Group-1 sysreg trapping via command-line Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 39/58] KVM: arm64: vgic-v3: Add ICV_BPR0_EL1 handler Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 40/58] KVM: arm64: vgic-v3: Add ICV_IGNREN0_EL1 handler Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 41/58] KVM: arm64: vgic-v3: Add misc Group-0 handlers Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 42/58] KVM: arm64: vgic-v3: Enable trapping of Group-0 system registers Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:44 ` [PATCH 43/58] KVM: arm64: Enable GICv3 Group-0 sysreg trapping via command-line Marc Zyngier 2017-06-30 8:44 ` Marc Zyngier 2017-06-30 8:45 ` [PATCH 44/58] arm64: Add MIDR values for Cavium cn83XX SoCs Marc Zyngier 2017-06-30 8:45 ` Marc Zyngier 2017-06-30 8:45 ` [PATCH 45/58] arm64: Add workaround for Cavium Thunder erratum 30115 Marc Zyngier 2017-06-30 8:45 ` Marc Zyngier 2017-06-30 8:45 ` [PATCH 46/58] KVM: arm64: vgic-v3: Add ICV_DIR_EL1 handler Marc Zyngier 2017-06-30 8:45 ` Marc Zyngier 2017-06-30 8:45 ` [PATCH 47/58] KVM: arm64: vgic-v3: Add ICV_RPR_EL1 handler Marc Zyngier 2017-06-30 8:45 ` Marc Zyngier 2017-06-30 8:45 ` [PATCH 48/58] KVM: arm64: vgic-v3: Add ICV_CTLR_EL1 handler Marc Zyngier 2017-06-30 8:45 ` Marc Zyngier 2017-06-30 8:45 ` [PATCH 49/58] KVM: arm64: vgic-v3: Add ICV_PMR_EL1 handler Marc Zyngier 2017-06-30 8:45 ` Marc Zyngier 2017-06-30 8:45 ` [PATCH 50/58] KVM: arm64: Enable GICv3 common sysreg trapping via command-line Marc Zyngier 2017-06-30 8:45 ` Marc Zyngier 2017-06-30 8:45 ` [PATCH 51/58] KVM: arm64: vgic-v3: Log which GICv3 system registers are trapped Marc Zyngier 2017-06-30 8:45 ` Marc Zyngier 2017-06-30 8:45 ` [PATCH 52/58] KVM: arm64: Log an error if trapping a read-from-write-only GICv3 access Marc Zyngier 2017-06-30 8:45 ` Marc Zyngier 2017-06-30 8:45 ` [PATCH 53/58] KVM: arm64: Log an error if trapping a write-to-read-only " Marc Zyngier 2017-06-30 8:45 ` Marc Zyngier 2017-06-30 8:45 ` [PATCH 54/58] arm64/kvm: sysreg: fix typo'd SYS_ICC_IGRPEN*_EL1 Marc Zyngier 2017-06-30 8:45 ` Marc Zyngier 2017-06-30 8:45 ` [PATCH 55/58] arm64/kvm: vgic: use SYS_DESC() Marc Zyngier 2017-06-30 8:45 ` Marc Zyngier 2017-06-30 8:45 ` [PATCH 56/58] KVM: ARM64: fix phy counter access failure in guest Marc Zyngier 2017-06-30 8:45 ` Marc Zyngier 2017-06-30 8:45 ` [PATCH 57/58] KVM: arm/arm64: Signal SIGBUS when stage2 discovers hwpoison memory Marc Zyngier 2017-06-30 8:45 ` Marc Zyngier 2017-06-30 8:45 ` [PATCH 58/58] arm64: Remove a redundancy in sysreg.h Marc Zyngier 2017-06-30 8:45 ` Marc Zyngier 2017-06-30 10:39 ` [GIT PULL] KVM/ARM updates for 4.13 Paolo Bonzini 2017-06-30 10:39 ` Paolo Bonzini
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