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| author | Anup Patel <anup.patel@linaro.org> | 2013-09-30 08:50:07 (GMT) |
|---|---|---|
| committer | Matthew Weigel <Matthew.Weigel@freescale.com> | 2014-12-11 18:39:46 (GMT) |
| commit | d58b798a5b72f1cad48cf28a680c5d06adec0d57 (patch) | |
| tree | ac0093c461fa634df08c50ac13cbc12317860302 | |
| parent | 4bd8f4ce5a16330fb3da27237a11d1d1e24162c0 (diff) | |
| download | linux-fsl-qoriq-d58b798a5b72f1cad48cf28a680c5d06adec0d57.tar.xz | |
ARM/ARM64: KVM: Implement KVM_ARM_PREFERRED_TARGET ioctl
For implementing CPU=host, we need a mechanism for querying
preferred VCPU target type on underlying Host.
This patch implements KVM_ARM_PREFERRED_TARGET vm ioctl which
returns struct kvm_vcpu_init instance containing information
about preferred VCPU target type and target specific features
available for it.
Signed-off-by: Anup Patel <anup.patel@linaro.org>
Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
(cherry picked from commit 42c4e0c77ac91505ab94284b14025e3a0865c0a5)
Signed-off-by: Diana Craciun <Diana.Craciun@freescale.com>
Change-Id: Iaace1d63c4bd6f66b7808f4b8e9201b8326ed4ee
Reviewed-on: http://git.am.freescale.net:8181/22039
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Zhengxiong Jin <Jason.Jin@freescale.com>
| -rw-r--r-- | arch/arm/kvm/arm.c | 13 | ||||
| -rw-r--r-- | include/uapi/linux/kvm.h | 1 |
2 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c index 9c697db..cc5adb9 100644 --- a/arch/arm/kvm/arm.c +++ b/arch/arm/kvm/arm.c @@ -797,6 +797,19 @@ long kvm_arch_vm_ioctl(struct file *filp, return -EFAULT; return kvm_vm_ioctl_set_device_addr(kvm, &dev_addr); } + case KVM_ARM_PREFERRED_TARGET: { + int err; + struct kvm_vcpu_init init; + + err = kvm_vcpu_preferred_target(&init); + if (err) + return err; + + if (copy_to_user(argp, &init, sizeof(init))) + return -EFAULT; + + return 0; + } default: return -EINVAL; } diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index 99c2533..e32e776 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -1012,6 +1012,7 @@ struct kvm_s390_ucas_mapping { /* VM is being stopped by host */ #define KVM_KVMCLOCK_CTRL _IO(KVMIO, 0xad) #define KVM_ARM_VCPU_INIT _IOW(KVMIO, 0xae, struct kvm_vcpu_init) +#define KVM_ARM_PREFERRED_TARGET _IOR(KVMIO, 0xaf, struct kvm_vcpu_init) #define KVM_GET_REG_LIST _IOWR(KVMIO, 0xb0, struct kvm_reg_list) #define KVM_DEV_ASSIGN_ENABLE_IOMMU (1 << 0) |