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arm64 requires a vcpu fd (KVM_HAS_DEVICE_ATTR vcpu ioctl) to probe support for steal-time. However this is unnecessary, as only a KVM fd is required, and it complicates userspace (userspace may prefer delaying vcpu creation until after feature probing). Introduce a cap that can be checked instead. While x86 can already probe steal-time support with a kvm fd (KVM_GET_SUPPORTED_CPUID), we add the cap there too for consistency. Signed-off-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Reviewed-by: Steven Price <steven.price@arm.com> Link: https://lore.kernel.org/r/20200804170604.42662-7-drjones@redhat.com |
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| .. | ||
| arm | ||
| devices | ||
| amd-memory-encryption.rst | ||
| api.rst | ||
| cpuid.rst | ||
| halt-polling.rst | ||
| hypercalls.rst | ||
| index.rst | ||
| locking.rst | ||
| mmu.rst | ||
| msr.rst | ||
| nested-vmx.rst | ||
| ppc-pv.rst | ||
| review-checklist.rst | ||
| running-nested-guests.rst | ||
| s390-diag.rst | ||
| s390-pv-boot.rst | ||
| s390-pv.rst | ||
| timekeeping.rst | ||
| vcpu-requests.rst | ||