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| author | Christoffer Dall <cdall@linaro.org> | 2017-05-08 21:38:40 +0300 |
|---|---|---|
| committer | Christoffer Dall <cdall@linaro.org> | 2017-05-09 13:19:14 +0300 |
| commit | 497d72d80a789501501cccabdad6b145f9e31371 (patch) | |
| tree | 278c4ca307da2925f7f89078a38aad03bd3d213f | |
| parent | 443c3a9e686aa44cf00c677498a6b715f9a43a45 (diff) | |
| download | linux-497d72d80a789501501cccabdad6b145f9e31371.tar.xz | |
KVM: Add kvm_vcpu_get_idx to get vcpu index in kvm->vcpus
There are occasional needs to use the index of vcpu in the kvm->vcpus
array to map something related to a VCPU. For example, unlike the
vcpu->vcpu_id, the vcpu index is guaranteed to not be sparse across all
vcpus which is useful when allocating a memory area for each vcpu.
Signed-off-by: Christoffer Dall <cdall@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
| -rw-r--r-- | include/linux/kvm_host.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 2c14ad9809da..12eb26d665e8 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -490,6 +490,17 @@ static inline struct kvm_vcpu *kvm_get_vcpu_by_id(struct kvm *kvm, int id) return NULL; } +static inline int kvm_vcpu_get_idx(struct kvm_vcpu *vcpu) +{ + struct kvm_vcpu *tmp; + int idx; + + kvm_for_each_vcpu(idx, tmp, vcpu->kvm) + if (tmp == vcpu) + return idx; + BUG(); +} + #define kvm_for_each_memslot(memslot, slots) \ for (memslot = &slots->memslots[0]; \ memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\ |