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| author |   Paolo Bonzini <pbonzini@redhat.com> | 2015-04-22 17:08:12 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-04-22 17:08:12 +0200 |
| commit | 2fa462f826210bbec65f8ed06d5ef4e0cd4f5450 (patch) | |
| tree | ed21793f915d77bcfb8c8a5e6cd07412c735b5fd | |
| parent | Merge tag 'signed-kvm-ppc-queue' of git://github.com/agraf/linux-2.6 into kvm-master (diff) | |
| parent | KVM: arm/arm64: check IRQ number on userland injection (diff) | |
| download | linux-dev-2fa462f826210bbec65f8ed06d5ef4e0cd4f5450.tar.xz linux-dev-2fa462f826210bbec65f8ed06d5ef4e0cd4f5450.zip | |
Merge tag 'kvm-arm-for-4.1-take2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into kvm-master
KVM/ARM changes for v4.1, take #2:
Rather small this time:
- a fix for a nasty bug with virtual IRQ injection
- a fix for irqfd
| -rw-r--r-- | arch/arm/include/uapi/asm/kvm.h | 8 | ||||
| -rw-r--r-- | arch/arm/kvm/arm.c | 3 | ||||
| -rw-r--r-- | arch/arm64/include/uapi/asm/kvm.h | 8 | ||||
| -rw-r--r-- | virt/kvm/arm/vgic.c | 5 |
4 files changed, 19 insertions, 5 deletions
diff --git a/arch/arm/include/uapi/asm/kvm.h b/arch/arm/include/uapi/asm/kvm.h index 2499867dd0d8..df3f60cb1168 100644 --- a/arch/arm/include/uapi/asm/kvm.h +++ b/arch/arm/include/uapi/asm/kvm.h @@ -195,8 +195,14 @@ struct kvm_arch_memory_slot { #define KVM_ARM_IRQ_CPU_IRQ 0 #define KVM_ARM_IRQ_CPU_FIQ 1 -/* Highest supported SPI, from VGIC_NR_IRQS */ +/* + * This used to hold the highest supported SPI, but it is now obsolete + * and only here to provide source code level compatibility with older + * userland. The highest SPI number can be set via KVM_DEV_ARM_VGIC_GRP_NR_IRQS. + */ +#ifndef __KERNEL__ #define KVM_ARM_IRQ_GIC_MAX 127 +#endif /* One single KVM irqchip, ie. the VGIC */ #define KVM_NR_IRQCHIPS 1 diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c index 6f536451ab78..d9631ecddd56 100644 --- a/arch/arm/kvm/arm.c +++ b/arch/arm/kvm/arm.c @@ -671,8 +671,7 @@ int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level, if (!irqchip_in_kernel(kvm)) return -ENXIO; - if (irq_num < VGIC_NR_PRIVATE_IRQS || - irq_num > KVM_ARM_IRQ_GIC_MAX) + if (irq_num < VGIC_NR_PRIVATE_IRQS) return -EINVAL; return kvm_vgic_inject_irq(kvm, 0, irq_num, level); diff --git a/arch/arm64/include/uapi/asm/kvm.h b/arch/arm64/include/uapi/asm/kvm.h index c154c0b7eb60..d26832022127 100644 --- a/arch/arm64/include/uapi/asm/kvm.h +++ b/arch/arm64/include/uapi/asm/kvm.h @@ -188,8 +188,14 @@ struct kvm_arch_memory_slot { #define KVM_ARM_IRQ_CPU_IRQ 0 #define KVM_ARM_IRQ_CPU_FIQ 1 -/* Highest supported SPI, from VGIC_NR_IRQS */ +/* + * This used to hold the highest supported SPI, but it is now obsolete + * and only here to provide source code level compatibility with older + * userland. The highest SPI number can be set via KVM_DEV_ARM_VGIC_GRP_NR_IRQS. + */ +#ifndef __KERNEL__ #define KVM_ARM_IRQ_GIC_MAX 127 +#endif /* One single KVM irqchip, ie. the VGIC */ #define KVM_NR_IRQCHIPS 1 diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c index 8d550ff14700..78fb8201014f 100644 --- a/virt/kvm/arm/vgic.c +++ b/virt/kvm/arm/vgic.c @@ -1561,6 +1561,9 @@ int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int irq_num, goto out; } + if (irq_num >= kvm->arch.vgic.nr_irqs) + return -EINVAL; + vcpu_id = vgic_update_irq_pending(kvm, cpuid, irq_num, level); if (vcpu_id >= 0) { /* kick the specified vcpu */ @@ -2141,7 +2144,7 @@ int kvm_irq_map_gsi(struct kvm *kvm, struct kvm_kernel_irq_routing_entry *entries, int gsi) { - return gsi; + return 0; } int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin) |