From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52697) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1doqSX-00056l-VL for qemu-devel@nongnu.org; Mon, 04 Sep 2017 08:26:46 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1doqSJ-0004qq-DA for qemu-devel@nongnu.org; Mon, 04 Sep 2017 08:26:33 -0400 Received: from orth.archaic.org.uk ([2001:8b0:1d0::2]:37124) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1doqSJ-0004pl-5m for qemu-devel@nongnu.org; Mon, 04 Sep 2017 08:26:19 -0400 Received: from pm215 by orth.archaic.org.uk with local (Exim 4.89) (envelope-from ) id 1doqSI-0005YG-1F for qemu-devel@nongnu.org; Mon, 04 Sep 2017 13:26:18 +0100 From: Peter Maydell Date: Mon, 4 Sep 2017 13:25:52 +0100 Message-Id: <1504527967-29248-22-git-send-email-peter.maydell@linaro.org> In-Reply-To: <1504527967-29248-1-git-send-email-peter.maydell@linaro.org> References: <1504527967-29248-1-git-send-email-peter.maydell@linaro.org> Subject: [Qemu-devel] [PULL 21/36] hw/arm/virt: allow pmu instantiation with userspace irqchip List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org From: Andrew Jones Move the in-kernel-irqchip test to only guard the set-irq stage, not the init stage of the PMU. Also add the PMU to the KVM device irq line synchronization to enable its use. Signed-off-by: Andrew Jones Reviewed-by: Christoffer Dall Message-id: 1500471597-2517-4-git-send-email-drjones@redhat.com Reviewed-by: Peter Maydell Signed-off-by: Peter Maydell --- hw/arm/virt.c | 3 ++- target/arm/kvm.c | 6 +++++- target/arm/kvm64.c | 3 +-- 3 files changed, 8 insertions(+), 4 deletions(-) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index d6e2486..999f448 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -496,7 +496,8 @@ static void fdt_add_pmu_nodes(const VirtMachineState *vms) return; } if (kvm_enabled()) { - if (!kvm_arm_pmu_set_irq(cpu, PPI(VIRTUAL_PMU_IRQ))) { + if (kvm_irqchip_in_kernel() && + !kvm_arm_pmu_set_irq(cpu, PPI(VIRTUAL_PMU_IRQ))) { return; } if (!kvm_arm_pmu_init(cpu)) { diff --git a/target/arm/kvm.c b/target/arm/kvm.c index 7c17f0d..211a7bf 100644 --- a/target/arm/kvm.c +++ b/target/arm/kvm.c @@ -567,7 +567,11 @@ MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run) switched_level &= ~KVM_ARM_DEV_EL1_PTIMER; } - /* XXX PMU IRQ is missing */ + if (switched_level & KVM_ARM_DEV_PMU) { + qemu_set_irq(cpu->pmu_interrupt, + !!(run->s.regs.device_irq_level & KVM_ARM_DEV_PMU)); + switched_level &= ~KVM_ARM_DEV_PMU; + } if (switched_level) { qemu_log_mask(LOG_UNIMP, "%s: unhandled in-kernel device IRQ %x\n", diff --git a/target/arm/kvm64.c b/target/arm/kvm64.c index e26638a..ec7d853 100644 --- a/target/arm/kvm64.c +++ b/target/arm/kvm64.c @@ -506,8 +506,7 @@ int kvm_arch_init_vcpu(CPUState *cs) if (!arm_feature(&cpu->env, ARM_FEATURE_AARCH64)) { cpu->kvm_init_features[0] |= 1 << KVM_ARM_VCPU_EL1_32BIT; } - if (!kvm_irqchip_in_kernel() || - !kvm_check_extension(cs->kvm_state, KVM_CAP_ARM_PMU_V3)) { + if (!kvm_check_extension(cs->kvm_state, KVM_CAP_ARM_PMU_V3)) { cpu->has_pmu = false; } if (cpu->has_pmu) { -- 2.7.4