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linux-next/Documentation/virtual/kvm
Vitaly Kuznetsov 2bc39970e9 x86/kvm/hyper-v: Introduce KVM_GET_SUPPORTED_HV_CPUID
With every new Hyper-V Enlightenment we implement we're forced to add a
KVM_CAP_HYPERV_* capability. While this approach works it is fairly
inconvenient: the majority of the enlightenments we do have corresponding
CPUID feature bit(s) and userspace has to know this anyways to be able to
expose the feature to the guest.

Add KVM_GET_SUPPORTED_HV_CPUID ioctl (backed by KVM_CAP_HYPERV_CPUID, "one
cap to rule them all!") returning all Hyper-V CPUID feature leaves.

Using the existing KVM_GET_SUPPORTED_CPUID doesn't seem to be possible:
Hyper-V CPUID feature leaves intersect with KVM's (e.g. 0x40000000,
0x40000001) and we would probably confuse userspace in case we decide to
return these twice.

KVM_CAP_HYPERV_CPUID's number is interim: we're intended to drop
KVM_CAP_HYPERV_STIMER_DIRECT and use its number instead.

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-12-14 17:59:54 +01:00
..
arm arm/arm64: KVM: Add PSCI version selection API 2018-04-20 16:32:23 +01:00
devices KVM: arm/arm64: vgic: Update documentation of the GIC devices wrt IIDR 2018-07-21 16:02:30 +01:00
amd-memory-encryption.rst KVM: Define SEV key management command id 2017-12-04 13:21:53 -06:00
api.txt x86/kvm/hyper-v: Introduce KVM_GET_SUPPORTED_HV_CPUID 2018-12-14 17:59:54 +01:00
cpuid.txt KVM: X86: Implement "send IPI" hypercall 2018-08-06 17:59:20 +02:00
halt-polling.txt KVM: Add halt polling documentation 2016-11-28 11:48:47 +11:00
hypercalls.txt KVM: X86: Implement "send IPI" hypercall 2018-08-06 17:59:20 +02:00
locking.txt kvm: x86: mmu: Update documentation for fast page fault mechanism 2017-01-09 14:46:12 +01:00
mmu.txt KVM: docs: mmu: KVM support exposing SLAT to guests 2018-06-01 19:18:27 +02:00
msr.txt KVM: x86: fix backward migration with async_PF 2018-02-24 01:43:48 +01:00
nested-vmx.txt KVM: docs: nVMX: Remove known limitations as they do not exist now 2018-06-01 19:18:28 +02:00
ppc-pv.txt Doc:kvm: Fix typo in Doc/virtual/kvm 2015-10-11 15:35:23 -06:00
review-checklist.txt docs: fix locations of several documents that got moved 2016-10-24 08:12:35 -02:00
s390-diag.txt KVM: s390: add documentation for diag 501 2014-04-22 13:24:51 +02:00
timekeeping.txt KVM: doc: Fix typo in doc/virtual/kvm 2013-12-31 17:24:54 -02:00
vcpu-requests.rst KVM: Add documentation for VCPU requests 2017-06-04 16:53:00 +02:00