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[2001:1868:205::9]) by mx.google.com with ESMTPS id y13si45187991pfb.154.2016.09.16.05.24.39 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 16 Sep 2016 05:24:39 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org designates 2001:1868:205::9 as permitted sender) client-ip=2001:1868:205::9; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@gmail.com; spf=pass (google.com: best guess record for domain of linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org designates 2001:1868:205::9 as permitted sender) smtp.mailfrom=linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org; dmarc=fail (p=NONE dis=NONE) header.from=gmail.com Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1bksAz-0000LD-5f; Fri, 16 Sep 2016 12:23:29 +0000 Received: from mail-pf0-x241.google.com ([2607:f8b0:400e:c00::241]) by bombadil.infradead.org with esmtps (Exim 4.85_2 #1 (Red Hat Linux)) id 1bks9Q-0007iz-NH for linux-arm-kernel@lists.infradead.org; Fri, 16 Sep 2016 12:21:59 +0000 Received: by mail-pf0-x241.google.com with SMTP id q2so932254pfj.0 for ; Fri, 16 Sep 2016 05:21:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=B6lcZrNT2jAt77rlfihV/gSXUz6882lMF36LvwH6b+E=; b=x36fVfJpJuT+3W9jgXBoYiXMfcYswJS/FvyDLwreLJDt6qGUzW8fyTD10aNIfaubvA isz1XdOjlrIn6vPxtR0zkQa1XJ/QnWFDHtLjO711mtpw+3LQw46D03vZNuGIerysvvZ7 kv6ZNkH/rk/0FXXXxCY9z+Fp7yNKnZD7U8TcLHdI0b4pVKz9VQc1GjI8AzdGOyIo5zT3 GEuh9VODhwecXuemixyWLzKKYPbMB1wTlZQ6KD1BfYt1gBYJb7jxBkhRr3Uoykbq3OQ3 WDpwvHGNcMAGnFoMxBwXyQrkkYl3RltG8dtLUzlsyiYeXP+i6FbR3HYpYI3InJT+gLVG GcUw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=B6lcZrNT2jAt77rlfihV/gSXUz6882lMF36LvwH6b+E=; b=B45PnCtsvGGUjNv9DQnREkVUbiURDNQ0Wbazp8Oks4dJBF7FiKSu3Y3eFzGyojAC1z ig4KjNmE1ZoSkPVAQYC5CTpA9tpUIybRjbs4AYSsh3oCos5QnBcTKcu8ERlWuZTA5mrp CvcC8Z2UD4CYLikxkWjH7bkIQ/uRSzT4vn1VIP4mB1vIbIcK5Xy3QKI0uuil+tbmsoJ+ iNbGURJTztup+ngRw6U9qmEjjO6dGgPDA/oyDneoLYRLHKC+SYelY8C3zjlpplY6jF8C QtjdsmktiHPhM5eqXlglcYvAO+3kwtqmL3vEBnpZFIqF7SGe7zyL3/GCDoF3r7H0zLEP bqwQ== X-Gm-Message-State: AE9vXwPyWRmtp3PYEYtwu8fsr6uXGoQ9rTnLtuSpCUf/HQGh8vnMivf+2I/I2wH16xk2TQ== X-Received: by 10.98.106.65 with SMTP id f62mr22664436pfc.107.1474028495609; Fri, 16 Sep 2016 05:21:35 -0700 (PDT) Received: from localhost.localdomain ([14.140.2.178]) by smtp.gmail.com with ESMTPSA id i7sm12031087paf.9.2016.09.16.05.21.32 (version=TLS1_1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 16 Sep 2016 05:21:35 -0700 (PDT) From: vijay.kilari@gmail.com To: marc.zyngier@arm.com, christoffer.dall@linaro.org, peter.maydell@linaro.org Subject: [PATCH v5 6/6] arm/arm64: vgic-new: Implement KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO ioctl Date: Fri, 16 Sep 2016 17:50:53 +0530 Message-Id: <1474028453-29132-7-git-send-email-vijay.kilari@gmail.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1474028453-29132-1-git-send-email-vijay.kilari@gmail.com> References: <1474028453-29132-1-git-send-email-vijay.kilari@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160916_052153_148815_00C77DD2 X-CRM114-Status: GOOD ( 16.24 ) X-Spam-Score: -2.7 (--) X-Spam-Report: SpamAssassin version 3.4.0 on bombadil.infradead.org summary: Content analysis details: (-2.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [2607:f8b0:400e:c00:0:0:0:241 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (vijay.kilari[at]gmail.com) -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: p.fedin@samsung.com, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, Vijaya Kumar K MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org From: Vijaya Kumar K Userspace requires to store and restore of line_level for level triggered interrupts using ioctl KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO. Signed-off-by: Vijaya Kumar K --- arch/arm64/include/uapi/asm/kvm.h | 6 +++++ virt/kvm/arm/vgic/vgic-kvm-device.c | 50 ++++++++++++++++++++++++++++++++++++- virt/kvm/arm/vgic/vgic-mmio-v3.c | 11 ++++++++ virt/kvm/arm/vgic/vgic-mmio.c | 33 ++++++++++++++++++++++++ virt/kvm/arm/vgic/vgic-mmio.h | 5 ++++ virt/kvm/arm/vgic/vgic.h | 3 +++ 6 files changed, 107 insertions(+), 1 deletion(-) -- 1.9.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel diff --git a/arch/arm64/include/uapi/asm/kvm.h b/arch/arm64/include/uapi/asm/kvm.h index 91c7137..4100f8c 100644 --- a/arch/arm64/include/uapi/asm/kvm.h +++ b/arch/arm64/include/uapi/asm/kvm.h @@ -211,6 +211,12 @@ struct kvm_arch_memory_slot { #define KVM_DEV_ARM_VGIC_GRP_CTRL 4 #define KVM_DEV_ARM_VGIC_GRP_REDIST_REGS 5 #define KVM_DEV_ARM_VGIC_CPU_SYSREGS 6 +#define KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO 7 +#define KVM_DEV_ARM_VGIC_LINE_LEVEL_INFO_SHIFT 10 +#define KVM_DEV_ARM_VGIC_LINE_LEVEL_INFO_MASK \ + (0x3fffffULL << KVM_DEV_ARM_VGIC_LINE_LEVEL_INFO_SHIFT) +#define KVM_DEV_ARM_VGIC_LINE_LEVEL_INTID_MASK 0x3ff +#define VGIC_LEVEL_INFO_LINE_LEVEL 0 #define KVM_DEV_ARM_VGIC_CTRL_INIT 0 diff --git a/virt/kvm/arm/vgic/vgic-kvm-device.c b/virt/kvm/arm/vgic/vgic-kvm-device.c index a48101f..de5d836 100644 --- a/virt/kvm/arm/vgic/vgic-kvm-device.c +++ b/virt/kvm/arm/vgic/vgic-kvm-device.c @@ -514,6 +514,25 @@ static int vgic_v3_attr_regs_access(struct kvm_device *dev, regid, reg); break; } + case KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO: { + unsigned int info, intid; + + info = (attr->attr & KVM_DEV_ARM_VGIC_LINE_LEVEL_INFO_MASK) >> + KVM_DEV_ARM_VGIC_LINE_LEVEL_INFO_SHIFT; + if (info == VGIC_LEVEL_INFO_LINE_LEVEL) { + if (is_write) + tmp32 = *reg; + intid = attr->attr & + KVM_DEV_ARM_VGIC_LINE_LEVEL_INTID_MASK; + ret = vgic_v3_line_level_info_uaccess(vcpu, is_write, + intid, &tmp32); + if (!is_write) + *reg = tmp32; + } else { + ret = -EINVAL; + } + break; + } default: ret = -EINVAL; break; @@ -556,6 +575,17 @@ static int vgic_v3_set_attr(struct kvm_device *dev, return vgic_v3_attr_regs_access(dev, attr, ®, true); } + case KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO: { + u32 __user *uaddr = (u32 __user *)(long)attr->addr; + u64 reg; + u32 tmp32; + + if (get_user(tmp32, uaddr)) + return -EFAULT; + + reg = tmp32; + return vgic_v3_attr_regs_access(dev, attr, ®, true); + } } return -ENXIO; } @@ -591,8 +621,18 @@ static int vgic_v3_get_attr(struct kvm_device *dev, return ret; return put_user(reg, uaddr); } - } + case KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO: { + u32 __user *uaddr = (u32 __user *)(long)attr->addr; + u64 reg; + u32 tmp32; + ret = vgic_v3_attr_regs_access(dev, attr, ®, false); + if (ret) + return ret; + tmp32 = reg; + return put_user(tmp32, uaddr); + } + } return -ENXIO; } @@ -613,11 +653,19 @@ static int vgic_v3_has_attr(struct kvm_device *dev, return vgic_v3_has_attr_regs(dev, attr); case KVM_DEV_ARM_VGIC_GRP_NR_IRQS: return 0; + case KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO: { + if (((attr->attr & KVM_DEV_ARM_VGIC_LINE_LEVEL_INFO_MASK) >> + KVM_DEV_ARM_VGIC_LINE_LEVEL_INFO_SHIFT) == + VGIC_LEVEL_INFO_LINE_LEVEL) + return 0; + break; + } case KVM_DEV_ARM_VGIC_GRP_CTRL: switch (attr->attr) { case KVM_DEV_ARM_VGIC_CTRL_INIT: return 0; } + break; } return -ENXIO; } diff --git a/virt/kvm/arm/vgic/vgic-mmio-v3.c b/virt/kvm/arm/vgic/vgic-mmio-v3.c index af748d7..9070412 100644 --- a/virt/kvm/arm/vgic/vgic-mmio-v3.c +++ b/virt/kvm/arm/vgic/vgic-mmio-v3.c @@ -806,3 +806,14 @@ int vgic_v3_redist_uaccess(struct kvm_vcpu *vcpu, bool is_write, return vgic_uaccess(vcpu, &rd_dev, is_write, offset, val); } + +int vgic_v3_line_level_info_uaccess(struct kvm_vcpu *vcpu, bool is_write, + u32 intid, u32 *val) +{ + if (is_write) + vgic_write_irq_line_level_info(vcpu, intid, *val); + else + *val = vgic_read_irq_line_level_info(vcpu, intid); + + return 0; +} diff --git a/virt/kvm/arm/vgic/vgic-mmio.c b/virt/kvm/arm/vgic/vgic-mmio.c index 173d6f0..fb018eb 100644 --- a/virt/kvm/arm/vgic/vgic-mmio.c +++ b/virt/kvm/arm/vgic/vgic-mmio.c @@ -371,6 +371,39 @@ void vgic_mmio_write_config(struct kvm_vcpu *vcpu, } } +unsigned long vgic_read_irq_line_level_info(struct kvm_vcpu *vcpu, u32 intid) +{ + int i; + unsigned long val = 0; + + for (i = 0; i < 32; i++) { + struct vgic_irq *irq = vgic_get_irq(vcpu->kvm, vcpu, intid + i); + + if (irq->line_level) + val |= (1U << i); + + vgic_put_irq(vcpu->kvm, irq); + } + + return val; +} + +void vgic_write_irq_line_level_info(struct kvm_vcpu *vcpu, u32 intid, + const unsigned long val) +{ + int i; + + for_each_set_bit(i, &val, 32) { + struct vgic_irq *irq = vgic_get_irq(vcpu->kvm, vcpu, intid + i); + + spin_lock(&irq->irq_lock); + irq->line_level = true; + spin_unlock(&irq->irq_lock); + + vgic_put_irq(vcpu->kvm, irq); + } +} + static int match_region(const void *key, const void *elt) { const unsigned int offset = (unsigned long)key; diff --git a/virt/kvm/arm/vgic/vgic-mmio.h b/virt/kvm/arm/vgic/vgic-mmio.h index acbf99e..938702c 100644 --- a/virt/kvm/arm/vgic/vgic-mmio.h +++ b/virt/kvm/arm/vgic/vgic-mmio.h @@ -181,6 +181,11 @@ int vgic_validate_mmio_region_addr(struct kvm_device *dev, const struct vgic_register_region *regions, int nr_regions, gpa_t addr); +unsigned long vgic_read_irq_line_level_info(struct kvm_vcpu *vcpu, u32 intid); + +void vgic_write_irq_line_level_info(struct kvm_vcpu *vcpu, u32 intid, + const unsigned long val); + unsigned int vgic_v2_init_dist_iodev(struct vgic_io_device *dev); unsigned int vgic_v3_init_dist_iodev(struct vgic_io_device *dev); diff --git a/virt/kvm/arm/vgic/vgic.h b/virt/kvm/arm/vgic/vgic.h index 4c0076c..baf2edd 100644 --- a/virt/kvm/arm/vgic/vgic.h +++ b/virt/kvm/arm/vgic/vgic.h @@ -108,6 +108,9 @@ int vgic_v3_cpu_sysregs_uaccess(struct kvm_vcpu *vcpu, bool is_write, u64 id, u64 *val); int vgic_v3_has_cpu_sysregs_attr(struct kvm_vcpu *vcpu, bool is_write, u64 id, u64 *reg); +int vgic_v3_line_level_info_uaccess(struct kvm_vcpu *vcpu, bool is_write, + u32 intid, u32 *val); + #else static inline int vgic_register_its_iodevs(struct kvm *kvm) {