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| author |   Paolo Bonzini <pbonzini@redhat.com> | 2018-10-10 18:38:32 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-10-10 18:38:32 +0200 |
| commit | 7dd2157cb61a38bee83e3bc4f9bc3311f7053b4b (patch) | |
| tree | d9f4edd5ed3899d8270b329990292ba5b52079d4 /include | |
| parent | Merge tag 'kvm-s390-next-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD (diff) | |
| parent | KVM: PPC: Book3S HV: Add NO_HASH flag to GET_SMMU_INFO ioctl result (diff) | |
| download | wireguard-linux-7dd2157cb61a38bee83e3bc4f9bc3311f7053b4b.tar.xz wireguard-linux-7dd2157cb61a38bee83e3bc4f9bc3311f7053b4b.zip | |
Merge tag 'kvm-ppc-next-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc into HEAD
PPC KVM update for 4.20.
The major new feature here is nested HV KVM support. This allows the
HV KVM module to load inside a radix guest on POWER9 and run radix
guests underneath it. These nested guests can run in supervisor mode
and don't require any additional instructions to be emulated, unlike
with PR KVM, and so performance is much better than with PR KVM, and
is very close to the performance of a non-nested guest. A nested
hypervisor (a guest with nested guests) can be migrated to another
host and will bring all its nested guests along with it. A nested
guest can also itself run guests, and so on down to any desired depth
of nesting.
Apart from that there are a series of updates for IOMMU handling from
Alexey Kardashevskiy, a "one VM per core" mode for HV KVM for
security-paranoid applications, and a small fix for PR KVM.
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/kvm.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index 251be353f950..7f2ff3a76995 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -719,6 +719,7 @@ struct kvm_ppc_one_seg_page_size { #define KVM_PPC_PAGE_SIZES_REAL 0x00000001 #define KVM_PPC_1T_SEGMENTS 0x00000002 +#define KVM_PPC_NO_HASH 0x00000004 struct kvm_ppc_smmu_info { __u64 flags; @@ -953,6 +954,7 @@ struct kvm_ppc_resize_hpt { #define KVM_CAP_NESTED_STATE 157 #define KVM_CAP_ARM_INJECT_SERROR_ESR 158 #define KVM_CAP_MSR_PLATFORM_INFO 159 +#define KVM_CAP_PPC_NESTED_HV 160 #ifdef KVM_CAP_IRQ_ROUTING |