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KVM: Convert kvm_for_each_vcpu() to using xa_for_each_range()

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Now that the vcpu array is backed by an xarray, use the optimised
iterator that matches the underlying data structure.

Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Message-Id: <20211116160403.4074052-8-maz@kernel.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Marc Zyngier 2021-11-16 16:04:03 +00:00 • committed by Paolo Bonzini
parent 46808a4cb8
commit 214bd3a6f4
1 changed files with 3 additions and 5 deletions
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8
include/linux/kvm_host.h
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@ -705,11 +705,9 @@ static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i)
return xa_load(&kvm->vcpu_array, i);
}
#define kvm_for_each_vcpu(idx, vcpup, kvm) \
for (idx = 0; \
idx < atomic_read(&kvm->online_vcpus) && \
(vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \
idx++)
#define kvm_for_each_vcpu(idx, vcpup, kvm) \
xa_for_each_range(&kvm->vcpu_array, idx, vcpup, 0, \
(atomic_read(&kvm->online_vcpus) - 1))
static inline struct kvm_vcpu *kvm_get_vcpu_by_id(struct kvm *kvm, int id)
{