From: Andre Przywara <andre.przywara@arm.com> To: Eric Auger <eric.auger@redhat.com>, eric.auger.pro@gmail.com, marc.zyngier@arm.com, christoffer.dall@linaro.org, vijayak@caviumnetworks.com, Vijaya.Kumar@cavium.com, peter.maydell@linaro.org, linux-arm-kernel@lists.infradead.org, drjones@redhat.com, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org Cc: Prasun.Kapoor@cavium.com, quintela@redhat.com, dgilbert@redhat.com, pbonzini@redhat.com Subject: Re: [PATCH v3 04/19] KVM: arm64: ITS: KVM_DEV_ARM_VGIC_GRP_ITS_REGS group Date: Mon, 20 Mar 2017 18:12:52 +0000 [thread overview] Message-ID: <0fc9f005-bc80-c66f-ad23-9baaae07fcde@arm.com> (raw) In-Reply-To: <1488800074-21991-5-git-send-email-eric.auger@redhat.com> Hi Eric, On 06/03/17 11:34, Eric Auger wrote: > The ITS KVM device exposes a new KVM_DEV_ARM_VGIC_GRP_ITS_REGS > group which allows the userspace to save/restore ITS registers. > > At this stage the get/set/has operations are not yet implemented. > > Signed-off-by: Eric Auger <eric.auger@redhat.com> Reviewed-by: Andre Przywara <andre.przywara@arm.com> > --- > arch/arm/include/uapi/asm/kvm.h | 1 + > arch/arm64/include/uapi/asm/kvm.h | 1 + > virt/kvm/arm/vgic/vgic-its.c | 36 +++++++++++++++++++++++++++++++++++- > 3 files changed, 37 insertions(+), 1 deletion(-) .... > @@ -1520,10 +1544,20 @@ static int vgic_its_get_attr(struct kvm_device *dev, > if (copy_to_user(uaddr, &addr, sizeof(addr))) > return -EFAULT; > break; > + } > + case KVM_DEV_ARM_VGIC_GRP_ITS_REGS: { > + u64 __user *uaddr = (u64 __user *)(long)attr->addr; > + u64 reg; > + int ret; > + > + ret = vgic_its_attr_regs_access(dev, attr, ®, false); > + if (ret) > + return ret; > + return put_user(reg, uaddr); > + } > default: > return -ENXIO; > } > - } And thanks for finding and fixing this nasty mishap. Fortunately C doesn't care about blocks in switch statements too much, so I think this works as intended (so it's not a "real" bug). Cheers, Andre.
WARNING: multiple messages have this Message-ID (diff)
From: andre.przywara@arm.com (Andre Przywara) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v3 04/19] KVM: arm64: ITS: KVM_DEV_ARM_VGIC_GRP_ITS_REGS group Date: Mon, 20 Mar 2017 18:12:52 +0000 [thread overview] Message-ID: <0fc9f005-bc80-c66f-ad23-9baaae07fcde@arm.com> (raw) In-Reply-To: <1488800074-21991-5-git-send-email-eric.auger@redhat.com> Hi Eric, On 06/03/17 11:34, Eric Auger wrote: > The ITS KVM device exposes a new KVM_DEV_ARM_VGIC_GRP_ITS_REGS > group which allows the userspace to save/restore ITS registers. > > At this stage the get/set/has operations are not yet implemented. > > Signed-off-by: Eric Auger <eric.auger@redhat.com> Reviewed-by: Andre Przywara <andre.przywara@arm.com> > --- > arch/arm/include/uapi/asm/kvm.h | 1 + > arch/arm64/include/uapi/asm/kvm.h | 1 + > virt/kvm/arm/vgic/vgic-its.c | 36 +++++++++++++++++++++++++++++++++++- > 3 files changed, 37 insertions(+), 1 deletion(-) .... > @@ -1520,10 +1544,20 @@ static int vgic_its_get_attr(struct kvm_device *dev, > if (copy_to_user(uaddr, &addr, sizeof(addr))) > return -EFAULT; > break; > + } > + case KVM_DEV_ARM_VGIC_GRP_ITS_REGS: { > + u64 __user *uaddr = (u64 __user *)(long)attr->addr; > + u64 reg; > + int ret; > + > + ret = vgic_its_attr_regs_access(dev, attr, ®, false); > + if (ret) > + return ret; > + return put_user(reg, uaddr); > + } > default: > return -ENXIO; > } > - } And thanks for finding and fixing this nasty mishap. Fortunately C doesn't care about blocks in switch statements too much, so I think this works as intended (so it's not a "real" bug). Cheers, Andre.
next prev parent reply other threads:[~2017-03-20 18:12 UTC|newest] Thread overview: 132+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-03-06 11:34 [PATCH v3 00/19] vITS save/restore Eric Auger 2017-03-06 11:34 ` Eric Auger 2017-03-06 11:34 ` [PATCH v3 01/19] KVM: arm/arm64: Add vITS save/restore API documentation Eric Auger 2017-03-06 11:34 ` Eric Auger 2017-03-13 13:08 ` Peter Maydell 2017-03-13 13:08 ` Peter Maydell 2017-03-13 14:42 ` Auger Eric 2017-03-13 14:42 ` Auger Eric 2017-03-13 17:38 ` Peter Maydell 2017-03-13 17:38 ` Peter Maydell 2017-03-16 15:25 ` Auger Eric 2017-03-16 15:25 ` Auger Eric 2017-03-06 11:34 ` [PATCH v3 02/19] KVM: arm/arm64: rename itte into ite Eric Auger 2017-03-06 11:34 ` Eric Auger 2017-03-06 11:34 ` [PATCH v3 03/19] arm/arm64: vgic: turn vgic_find_mmio_region into public Eric Auger 2017-03-06 11:34 ` Eric Auger 2017-03-17 14:38 ` Andre Przywara 2017-03-17 14:38 ` Andre Przywara 2017-03-21 17:38 ` Auger Eric 2017-03-21 17:38 ` Auger Eric 2017-03-06 11:34 ` [PATCH v3 04/19] KVM: arm64: ITS: KVM_DEV_ARM_VGIC_GRP_ITS_REGS group Eric Auger 2017-03-06 11:34 ` Eric Auger 2017-03-20 18:12 ` Andre Przywara [this message] 2017-03-20 18:12 ` Andre Przywara 2017-03-06 11:34 ` [PATCH v3 05/19] KVM: arm64: ITS: Implement vgic_its_has_attr_regs and attr_regs_access Eric Auger 2017-03-06 11:34 ` Eric Auger 2017-03-20 18:13 ` Andre Przywara 2017-03-20 18:13 ` Andre Przywara 2017-03-22 14:15 ` Auger Eric 2017-03-22 14:15 ` Auger Eric 2017-03-06 11:34 ` [PATCH v3 06/19] KVM: arm64: ITS: Implement vgic_mmio_uaccess_write_its_creadr Eric Auger 2017-03-06 11:34 ` Eric Auger 2017-03-20 18:14 ` Andre Przywara 2017-03-20 18:14 ` Andre Przywara 2017-03-24 10:38 ` Auger Eric 2017-03-24 10:38 ` Auger Eric 2017-03-06 11:34 ` [PATCH v3 07/19] KVM: arm64: ITS: Report the ITE size in GITS_TYPER Eric Auger 2017-03-06 11:34 ` Eric Auger 2017-03-17 14:39 ` Andre Przywara 2017-03-17 14:39 ` Andre Przywara 2017-03-21 17:38 ` Auger Eric 2017-03-21 17:38 ` Auger Eric 2017-03-06 11:34 ` [PATCH v3 08/19] KVM: arm64: ITS: Interpret MAPD Size field and check related errors Eric Auger 2017-03-06 11:34 ` Eric Auger 2017-03-17 15:03 ` Andre Przywara 2017-03-17 15:03 ` Andre Przywara 2017-03-21 17:40 ` Auger Eric 2017-03-21 17:40 ` Auger Eric 2017-03-21 17:57 ` Andre Przywara 2017-03-21 17:57 ` Andre Przywara 2017-03-06 11:34 ` [PATCH v3 09/19] KVM: arm64: ITS: Interpret MAPD ITT_addr field Eric Auger 2017-03-06 11:34 ` Eric Auger 2017-03-17 15:19 ` Andre Przywara 2017-03-17 15:19 ` Andre Przywara 2017-03-21 17:41 ` Auger Eric 2017-03-21 17:41 ` Auger Eric 2017-03-06 11:34 ` [PATCH v3 10/19] KVM: arm64: ITS: Check the device id matches TYPER DEVBITS range Eric Auger 2017-03-06 11:34 ` Eric Auger 2017-03-17 15:41 ` Andre Przywara 2017-03-17 15:41 ` Andre Przywara 2017-03-21 17:42 ` Auger Eric 2017-03-21 17:42 ` Auger Eric 2017-03-06 11:34 ` [PATCH v3 11/19] KVM: arm64: ITS: KVM_DEV_ARM_VGIC_GRP_ITS_TABLES group Eric Auger 2017-03-06 11:34 ` Eric Auger 2017-03-20 18:14 ` Andre Przywara 2017-03-20 18:14 ` Andre Przywara 2017-03-22 14:29 ` Auger Eric 2017-03-22 14:29 ` Auger Eric 2017-03-06 11:34 ` [PATCH v3 12/19] KVM: arm64: ITS: vgic_its_alloc_ite/device Eric Auger 2017-03-06 11:34 ` Eric Auger 2017-03-17 17:01 ` Andre Przywara 2017-03-17 17:01 ` Andre Przywara 2017-03-21 17:42 ` Auger Eric 2017-03-21 17:42 ` Auger Eric 2017-03-06 11:34 ` [PATCH v3 13/19] KVM: arm64: ITS: Sort the device and ITE lists Eric Auger 2017-03-06 11:34 ` Eric Auger 2017-03-20 18:14 ` Andre Przywara 2017-03-20 18:14 ` Andre Przywara 2017-03-06 11:34 ` [PATCH v3 14/19] KVM: arm64: ITS: Add infrastructure for table lookup Eric Auger 2017-03-06 11:34 ` Eric Auger 2017-03-21 18:12 ` Andre Przywara 2017-03-21 18:12 ` Andre Przywara 2017-03-22 14:40 ` Auger Eric 2017-03-22 14:40 ` Auger Eric 2017-03-06 11:34 ` [PATCH v3 15/19] KVM: arm64: ITS: Collection table save/restore Eric Auger 2017-03-06 11:34 ` Eric Auger 2017-03-21 18:13 ` Andre Przywara 2017-03-21 18:13 ` Andre Przywara 2017-03-22 14:12 ` Auger Eric 2017-03-22 14:12 ` Auger Eric 2017-03-06 11:34 ` [PATCH v3 16/19] KVM: arm64: ITS: vgic_its_check_id returns the entry's GPA Eric Auger 2017-03-06 11:34 ` Eric Auger 2017-03-21 18:12 ` Andre Przywara 2017-03-21 18:12 ` Andre Przywara 2017-03-22 14:11 ` Auger Eric 2017-03-22 14:11 ` Auger Eric 2017-03-22 14:22 ` Auger Eric 2017-03-22 14:22 ` Auger Eric 2017-03-06 11:34 ` [PATCH v3 17/19] KVM: arm64: ITS: ITT flush and restore Eric Auger 2017-03-06 11:34 ` Eric Auger 2017-03-21 18:13 ` Andre Przywara 2017-03-21 18:13 ` Andre Przywara 2017-03-22 14:17 ` Auger Eric 2017-03-22 14:17 ` Auger Eric 2017-03-06 11:34 ` [PATCH v3 18/19] KVM: arm64: ITS: Device table save/restore Eric Auger 2017-03-06 11:34 ` Eric Auger 2017-03-22 14:39 ` Andre Przywara 2017-03-22 14:39 ` Andre Przywara 2017-03-24 10:38 ` Auger Eric 2017-03-24 10:38 ` Auger Eric 2017-03-24 10:45 ` Auger Eric 2017-03-24 10:45 ` Auger Eric 2017-03-24 11:12 ` Andre Przywara 2017-03-24 11:12 ` Andre Przywara 2017-03-24 11:27 ` Auger Eric 2017-03-24 11:27 ` Auger Eric 2017-03-24 11:14 ` Andre Przywara 2017-03-24 11:14 ` Andre Przywara 2017-03-24 11:28 ` Auger Eric 2017-03-24 11:28 ` Auger Eric 2017-03-06 11:34 ` [PATCH v3 19/19] KVM: arm64: ITS: Pending " Eric Auger 2017-03-06 11:34 ` Eric Auger 2017-03-20 18:21 ` Andre Przywara 2017-03-20 18:21 ` Andre Przywara 2017-03-22 15:12 ` Auger Eric 2017-03-22 15:12 ` Auger Eric 2017-03-22 16:22 ` André Przywara 2017-03-22 16:22 ` André Przywara 2017-03-22 14:39 ` Andre Przywara 2017-03-22 14:39 ` Andre Przywara 2017-03-24 11:20 ` Auger Eric 2017-03-24 11:20 ` Auger Eric
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